Bitcoin-Whitepaper: Das Dokument auf Deutsch und als PDF

twister | P2P microblogging

twister is the fully decentralized P2P microblogging platform leveraging from the free software implementations of Bitcoin and BitTorrent protocols.
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I for one, welcome our new Bitcoin overlords.

Like /hailCorporate but for people mentioning bitcoin. --- If you've never done your own research on bitcoin THEN READ THE Bitcoin White Paper](https://webcache.googleusercontent.com/search?q=cache:YghnrrkfjbYJ:https://bitcoin.org/bitcoin.pdf+&cd=1&hl=en&ct=clnk).
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Metaverse

Metaverse is a decentralised platform based on blockchain technology. This subreddit community is for discussing, sharing and learning.
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02-01 11:12 - 'Proof of work ❌ Proof of stake ❌ Proof of Round Trip ✅ Read the white paper - www.harshitgambhir.com/port.pdf' (i.redd.it) by /u/harshit_random removed from /r/Bitcoin within 74-84min

Proof of work ❌ Proof of stake ❌ Proof of Round Trip ✅ Read the white paper - www.harshitgambhir.com/port.pdf
Go1dfish undelete link
unreddit undelete link
Author: harshit_random
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It has been TEN YEARS since Satoshi Nakamoto released Bitcoin White Paper on October 31, 2008. This amazing technology has now laid the foundation for our mission of enhancing financial inclusion in Africa using technology. https://www.kubitx.io/wp.pdf #kbx #Africa #satoshinakamoto

It has been TEN YEARS since Satoshi Nakamoto released Bitcoin White Paper on October 31, 2008. This amazing technology has now laid the foundation for our mission of enhancing financial inclusion in Africa using technology. https://www.kubitx.io/wp.pdf #kbx #Africa #satoshinakamoto submitted by KuBitX to KubitX [link] [comments]

Mini Bitcoin White Paper: ready-to-print PDF file that creates a "pocket booklet" (download link)

Mini Bitcoin White Paper: ready-to-print PDF file that creates a submitted by FrancisPouliot to Bitcoin [link] [comments]

What book do you suggest me to learn all about Bitcoin (Cash)?

I'ld like to read a book that explain everything about Bitcoin (Cash), from its history to every tech details. What do you suggest?
submitted by VillaCaruso to Bitcoincash [link] [comments]

Putting $400M of Bitcoin on your company balance sheet

Also posted on my blog as usual. Read it there if you can, there are footnotes and inlined plots.
A couple of months ago, MicroStrategy (MSTR) had a spare $400M of cash which it decided to shift to Bitcoin (BTC).
Today we'll discuss in excrutiating detail why this is not a good idea.
When a company has a pile of spare money it doesn't know what to do with, it'll normally do buybacks or start paying dividends. That gives the money back to the shareholders, and from an economic perspective the money can get better invested in other more promising companies. If you have a huge pile of of cash, you probably should be doing other things than leave it in a bank account to gather dust.
However, this statement from MicroStrategy CEO Michael Saylor exists to make it clear he's buying into BTC for all the wrong reasons:
“This is not a speculation, nor is it a hedge. This was a deliberate corporate strategy to adopt a bitcoin standard.”
Let's unpack it and jump into the economics Bitcoin:

Is Bitcoin money?

No.
Or rather BTC doesn't act as money and there's no serious future path for BTC to become a form of money. Let's go back to basics. There are 3 main economic problems money solves:
1. Medium of Exchange. Before money we had to barter, which led to the double coincidence of wants problem. When everyone accepts the same money you can buy something from someone even if they don't like the stuff you own.
As a medium of exchange, BTC is not good. There are significant transaction fees and transaction waiting times built-in to BTC and these worsen the more popular BTC get.
You can test BTC's usefulness as a medium of exchange for yourself right now: try to order a pizza or to buy a random item with BTC. How many additional hurdles do you have to go through? How many fewer options do you have than if you used a regular currency? How much overhead (time, fees) is there?
2. Unit of Account. A unit of account is what you compare the value of objects against. We denominate BTC in terms of how many USD they're worth, so BTC is a unit of account presently. We can say it's because of lack of adoption, but really it's also because the market value of BTC is so volatile.
If I buy a $1000 table today or in 2017, it's roughly a $1000 table. We can't say that a 0.4BTC table was a 0.4BTC table in 2017. We'll expand on this in the next point:
3. Store of Value. When you create economic value, you don't want to be forced to use up the value you created right away.
For instance, if I fix your washing machine and you pay me in avocados, I'd be annoyed. I'd have to consume my payment before it becomes brown, squishy and disgusting. Avocado fruit is not good money because avocadoes loses value very fast.
On the other hand, well-run currencies like the USD, GBP, CAD, EUR, etc. all lose their value at a low and most importantly fairly predictible rate. Let's look at the chart of the USD against BTC
While the dollar loses value at a predictible rate, BTC is all over the place, which is bad.
One important use money is to write loan contracts. Loans are great. They let people spend now against their future potential earnings, so they can buy houses or start businesses without first saving up for a decade. Loans are good for the economy.
If you want to sign something that says "I owe you this much for that much time" then you need to be able to roughly predict the value of the debt in at the point in time where it's due.
Otherwise you'll have a hard time pricing the risk of the loan effectively. This means that you need to charge higher interests. The risk of making a loan in BTC needs to be priced into the interest of a BTC-denominated loan, which means much higher interest rates. High interests on loans are bad, because buying houses and starting businesses are good things.

BTC has a fixed supply, so these problems are built in

Some people think that going back to a standard where our money was denominated by a stock of gold (the Gold Standard) would solve economic problems. This is nonsense.
Having control over supply of your currency is a good thing, as long as it's well run.
See here
Remember that what is desirable is low variance in the value, not the value itself. When there are wild fluctuations in value, it's hard for money to do its job well.
Since the 1970s, the USD has been a fiat money with no intrinsic value. This means we control the supply of money.
Let's look at a classic poorly drawn econ101 graph
The market price for USD is where supply meets demand. The problem with a currency based on an item whose supply is fixed is that the price will necessarily fluctuate in response to changes in demand.
Imagine, if you will, that a pandemic strikes and that the demand for currency takes a sharp drop. The US imports less, people don't buy anything anymore, etc. If you can't print money, you get deflation, which is worsens everything. On the other hand, if you can make the money printers go brrrr you can stabilize the price
Having your currency be based on a fixed supply isn't just bad because in/deflation is hard to control.
It's also a national security risk...
The story of the guy who crashed gold prices in North Africa
In the 1200s, Mansa Munsa, the emperor of the Mali, was rich and a devout Muslim and wanted everyone to know it. So he embarked on a pilgrimage to make it rain all the way to Mecca.
He in fact made it rain so hard he increased the overall supply of gold and unintentionally crashed gold prices in Cairo by 20%, wreaking an economic havoc in North Africa that lasted a decade.
This story is fun, the larger point that having your inflation be at the mercy of foreign nations is an undesirable attribute in any currency. The US likes to call some countries currency manipulators, but this problem would be serious under a gold standard.

Currencies are based on trust

Since the USD is based on nothing except the US government's word, how can we trust USD not to be mismanaged?
The answer is that you can probably trust the fed until political stooges get put in place. Currently, the US's central bank managing the USD, the Federal Reserve (the Fed for friends & family), has administrative authority. The fed can say "no" to dumb requests from the president.
People who have no idea what the fed does like to chant "audit the fed", but the fed is already one of the best audited US federal entities. The transcripts of all their meetings are out in the open. As is their balance sheet, what they plan to do and why. If the US should audit anything it's the Department of Defense which operates without any accounting at all.
It's easy to see when a central bank will go rogue: it's when political yes-men are elected to the board.
For example, before printing themselves into hyperinflation, the Venezuelan president appointed a sociologist who publicly stated “Inflation does not exist in real life” and instead is a made up capitalist lie. Note what happened mere months after his gaining control over the Venezuelan currency
This is a key policy. One paper I really like, Sargent (1984) "The end of 4 big inflations" states:
The essential measures that ended hyperinflation in each of Germany,Austria, Hungary, and Poland were, first, the creation of an independentcentral bank that was legally committed to refuse the government'sdemand or additional unsecured credit and, second, a simultaneousalteration in the fiscal policy regime.
In english: *hyperinflation stops when the central bank can say "no" to the government."
The US Fed, like other well good central banks, is run by a bunch of nerds. When it prints money, even as aggressively as it has it does so for good reasons. You can see why they started printing on March 15th as the COVID lockdowns started:
The Federal Reserve is prepared to use its full range of tools to support the flow of credit to households and businesses and thereby promote its maximum employment and price stability goals.
In english: We're going to keep printing and lowering rates until jobs are back and inflation is under control. If we print until the sun is blotted out, we'll print in the shade.

BTC is not gold

Gold is a good asset for doomsday-preppers. If society crashes, gold will still have value.
How do we know that?
Gold has held value throughout multiple historic catastrophes over thousands of years. It had value before and after the Bronze Age Collapse, the Fall of the Western Roman Empire and Gengis Khan being Gengis Khan.
Even if you erased humanity and started over, the new humans would still find gold to be economically valuable. When Europeans d̶i̶s̶c̶o̶v̶e̶r̶e̶d̶ c̶o̶n̶q̶u̶e̶r̶e̶d̶ g̶e̶n̶o̶c̶i̶d̶e̶d̶ went to America, they found gold to be an important item over there too. This is about equivalent to finding humans on Alpha-Centauri and learning that they think gold is a good store of value as well.
Some people are puzzled at this: we don't even use gold for much! But it has great properties:
First, gold is hard to fake and impossible to manufacture. This makes it good to ascertain payment.
Second, gold doesnt react to oxygen, so it doesn't rust or tarnish. So it keeps value over time unlike most other materials.
Last, gold is pretty. This might sound frivolous, and you may not like it, but jewelry has actual value to humans.
It's no coincidence if you look at a list of the wealthiest families, a large number of them trade in luxury goods.
To paraphrase Veblen humans have a profound desire to signal social status, for the same reason peacocks have unwieldy tails. Gold is a great way to achieve that.
On the other hand, BTC lacks all these attributes. Its value is largely based on common perception of value. There are a few fundamental drivers of demand:
Apart from these, it's hard to argue that BTC will retain value throughout some sort of economic catastrophe.

BTC is really risky

One last statement from Michael Saylor I take offense to is this:
“We feel pretty confident that Bitcoin is less risky than holding cash, less risky than holding gold,” MicroStrategy CEO said in an interview
"BTC is less risky than holding cash or gold long term" is nonsense. We saw before that BTC is more volatile on face value, and that as long as the Fed isn't run by spider monkeys stacked in a trench coat, the inflation is likely to be within reasonable bounds.
But on top of this, BTC has Abrupt downside risks that normal currencies don't. Let's imagine a few:

Blockchain solutions are fundamentally inefficient

Blockchain was a genius idea. I still marvel at the initial white paper which is a great mix of economics and computer science.
That said, blockchain solutions make large tradeoffs in design because they assume almost no trust between parties. This leads to intentionally wasteful designs on a massive scale.
The main problem is that all transactions have to be validated by expensive computational operations and double checked by multiple parties. This means waste:
Many design problems can be mitigated by various improvements over BTC, but it remains that a simple database always works better than a blockchain if you can trust the parties to the transaction.
submitted by VodkaHaze to badeconomics [link] [comments]

Mainnet beta v1 p2p Release

Mainnet beta v1 p2p Release
Libonomy is one of a kind blockchain which through innovation and creativity has achieved all the set goals with great success. The kind of innovation that attracts and reaches out to masses of people who have knowledge and understanding that this system is fulfilling its role of greatness. Many only talk about the next level blockchain technology that would fix all the existing problems all in one, Libonomy is already on a road to fulfill this ideology.
We are designing and coding an autonomous blockchain that will run on first ever AI based consensus algorithm, which will make Libonomy world’s first every autonomous, interoperable and scalable blockchain. To learn more about Libonomy visit website and read this.
Mainnet Beta v1

Benefits

The major difference is that Libonomy Blockchain resolves the issues previous consensus algorithms that have been used for a very long time. All of these consensus algorithms have their own drawbacks, Libonomy believes in providing an error-free consensus engine that has been architecture very carefully. It uses Artificial Intelligence – automated, computer generated engine that saves time, energy and gives high throughput, is scalable, interoperable and autonomous.

Project Status

We are working hard towards our first patch - which is public mainnet beta release running Libonomy AI consensus algorithm. In the upcoming days our team will be release the full node running the consensus algorithm with which users will be able to carry out the transactions on their local systems as well.

Important

The current release interacts with staking consensus through our AI protocol so as to ensure that current community acceptance is achieved and in the later upgrades Libonomy will deprecate such systems.

Technical information

Repository
This repository contains the necessary configurations and instruction required in order to interact with Libonomy mainnet-beta-release-v1 for the developer community. It is to inform that all the necessary deployment required to run our mainnet network protocol is up and running with all the proper configurations. Currently the configure nodes are around 15 which are running virtually on some machines, but the nodes are configured in multiple regions.
In order to use commands on network developer community can download our mainnet build file for Linux which is present in this repository and use wallet-CLI repository to make commands. Further release of the mainnet from next week will include our mainnet node release for developers in which we will make our mainnet crypto currency code open source and they can then use our code as well or even can make run time build.
This node is referred to as Libonomy mainnet daemon. Just like bitcoin or other crypto currency who use daemon as a service. Likewise, Libonomy provides community with daemon service as well.
However, our next release will be configured in a way that our AI protocol is connected with Staking Consensus protocol so the community who don’t have a lot of knowledge about Aphelion protocol can make use of their staking blockchain knowledge for carrying out validation activities on Libonomy as well.
This release also comes with compatibility of smart contract which will be interoperable with Ethereum in its release of next month. Which means that when Libonomy will demonstrate its blockchain reboot the current blockchain will never get affected or even the smart contracts. This reboot feature can be regarded as first blockchain which can even reboot itself without creating a fork or disrupting the current running network.
It should also be highlighted that Libonomy is actively making its releases and necessary upgrades in its systems so in case of any inconsistency the community is advised to open issues on the relevant repository of GitHub or on Discord. Kindly also stay updated with our social media and developer community pages as well.
submitted by Libonomy to Libonomy [link] [comments]

Some suggestions for crypto reading material.

https://bitcoin.org/bitcoin.pdf
I’m posting it because if you haven’t yet I think it’s important that everyone does. Save it, when you have time take a read. A lot of people jump into crypto only looking at charts, price and market cap. I think it’s important to understand the origins of it, not in a biblical sense like some people take it. Satoshi was a revolutionary thinker that changed the world forever. The philosophy behind crypto is subtly embedded in the bitcoin white paper and I get the sense that sometimes the true meaning behind crypto is forgotten, the philosophical value.
While we are on the topic the Ethereum white paper is too long and technical to be considered a must read. You can get the understanding by reading the introduction, bitcoin comparison section and the conclusion. I will post that as well for comparison.
https://ethereum.org/en/whitepape
If you’ve gotten through those and you’re an avid reader I have a few books I would recommend.
Bitcoin Billionaires was a very good book. Highly entertaining while also helpful to understand the story of Bitcoin. While told focused around the Winklevii who better to be the focus than the biggest whales in the game. Everything from Facebook, Mt Gox, parties, court rooms, prison and a success story for not only the Winklevoss twins but the story of the success of Bitcoin.
https://www.goodreads.com/book/show/41433284-bitcoin-billionaires
The Infinite Machine is sort of the equivalent for Ethereum. It is all about the origin story of Ethereum from birth to boom including the known characters and some connections maybe unknown to some. I would actually suggest reading this instead of the white paper. Camila Russo does a great job breaking it down in a way that can be understood. I also follow her Defi podcast The Defiant.
https://www.goodreads.com/book/show/50175330-the-infinite-machine?ac=1&from_search=true&qid=W903QklCOW&rank=2
Mastering Monero, opinions of the coin aside, is very much worth reading. You will have a better understanding of privacy as a whole, not just privacy of Monero. From banking system explanations to dark web usage, or lack thereof, is covered in the book. It’s written by Monero users for Monero users and non Monero users. The Bitcoin mentions in the book aren’t FUD but instead written factually. It’s an easy enough read and it’s also available free or by donation. I donated for it but the PDF isn’t hard to get to.
https://masteringmonero.com/free-download.html
For the futurists, the dreamers and the hopefuls there is Blockchain 2025 written by Jared Tate. He speaks his mind and is honest as the sky is blue. He wrote the book not to promote DGB but moreso to discuss the role of blockchain beyond just cryptocurrency in the future. I’ve only just started it but so far it’s a good read.
https://blockchain2035.com/
Another one, not crypto related, is The Wolf Of Wall Street by Jordan Belfort. “People don’t buy stock; it gets sold to them. Don’t ever forget that.” I also always reflect on the Mathew McConaughey movie monologue when I read the expert traders or see them on YouTube. It’s valuable to understand how the sharks in the system feed on the minnows.
Do you have any reading suggestions?
submitted by ethereumflow to u/ethereumflow [link] [comments]

Archives for /r/badeconomics/comments/jfjl8j/putting_400m_of_bitcoin_on_your_company_balance/

Snapshots:
  1. Putting $400M of Bitcoin on your co... - archive.org, archive.today*
  2. my blog - archive.org, archive.today*
  3. MicroStrategy - archive.org, archive.today*
  4. buybacks - archive.org, archive.today*
  5. dividends - archive.org, archive.today*
  6. double coincidence of wants - archive.org, archive.today*
  7. BTC - archive.org, archive.today*
  8. Gold Standard - archive.org, archive.today*
  9. See here - archive.org, archive.today*
  10. variance - archive.org, archive.today*
  11. fiat money - archive.org, archive.today*
  12. Let's look at a classic poorly draw... - archive.org, archive.today*
  13. money printers go brrrr - archive.org, archive.today*
  14. stabilize the price - archive.org, archive.today*
  15. Mansa Munsa - archive.org, archive.today*
  16. crashed gold prices in Cairo by 20% - archive.org, archive.today*
  17. currency manipulators - archive.org, archive.today*
  18. all their meetings - archive.org, archive.today*
  19. balance sheet - archive.org, archive.today*
  20. https://www.federalreserve.gov/news... - archive.org, archive.today*
  21. any accounting at all - archive.org, archive.today*
  22. sociologist who publicly stated “In... - archive.org, archive.today*
  23. Venezuelan currency - archive.org, archive.today*
  24. Sargent (1984) "The end of 4 big in... - archive.org, archive.today*
  25. bunch of nerds - archive.org, archive.today*
  26. Bronze Age Collapse - archive.org, archive.today*
  27. Fall of the Western Roman Empire - archive.org, archive.today*
  28. Gengis Khan being Gengis Khan - archive.org, archive.today*
  29. an important item over there too - archive.org, archive.today*
  30. wealthiest families - archive.org, archive.today*
  31. Veblen - archive.org, archive.today*
  32. cryptolocker - archive.org, archive.today*
  33. said in an interview - archive.org, archive.today*
  34. 51% attack - archive.org, archive.today*
  35. bank run - archive.org, archive.today*
  36. Black Tuesday - archive.org, archive.today*
  37. white paper - archive.org, archive.today*
  38. 2019 - archive.org, archive.today*
  39. 800,000 - archive.org, archive.today*
  40. works better than a blockchain - archive.org, archive.today*
I am just a simple bot, *not** a moderator of this subreddit* | bot subreddit | contact the maintainers
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Swipe introduces Product Manual with New Products, Card Tiers, and more!

Swipe introduces Product Manual with New Products, Card Tiers, and more!

https://preview.redd.it/hvp70trukag51.png?width=700&format=png&auto=webp&s=390be8bbcb5fdea99a744cae0ff5b27853acf83a
Swipe is thrilled to announce that it has released a new “redefined” white paper under: Swipe Product Manual. The Swipe Product Manual was designed with simplicity in mind for easy and coherent descriptions of the Swipe ecosystem of products. White papers tend to be bulky, mixed with content that the average user will not digest and understand. The typical cryptocurrency buyer or person looking to get into cryptocurrency, are not too found of the technicals behind a protocol, but more how the protocol will work described in a way for a layman person. This is how Swipe believes in working towards mass adoption.
With this in mind, instead of filling our white papers with technical resources and explanations, we decided to take a different approach and go with a Product Manual style design. This will describe all of our current and future products that we have planned and the overall summary of each one. Technical descriptions and documentation will be made available, as required, per protocol as some will have API access for developers.
Please bare in mind that this is a working document and may be subject to improvements and/or changes.

Summary of Updates

Swipe Products Available Today

  • Swipe Wallet
  • Swipe Card
  • Swipe Issuing

Swipe Products Launching Soon

  • Swipe Pay
  • Swipe Credit
  • Swipe Savings
  • Swipe Decentralized Applications (Governance, Swap, Staking, SwipeFi)

Swipe Card New Tiers

  • Swipe Saffron — 0 SXP Stake
  • Swipe Sky — 300 SXP Stake
  • Swipe Steel — 3,000 SXP Stake
  • Swipe Saffron — 30,000 SXP Stake
The new Swipe Card Tiers will give users more options to select a card program that suits their needs and budgets.
Swipe is also excited to announce that our card programs now give up to 5% cash back in Bitcoin with benefits such as:
  • 100% Rewards Rebates on Amazon Prime, Apple Music, Spotify, Netflix, and Hulu memberships*
  • 10% Rewards Rebates on Starbucks, Uber, and Airbnb, and Travala.com*
The Swipe Product Manual can be viewed by clicking here or by going to https://sw.pe/ProductManual or downloading https://swipe.io/ProductManual.pdf to your desktop.

Swipe Token Upgrade

Swipe SXP Token will go through a token upgrade to a new v2 token contract on the Ethereum blockchain that will destroy and remove all admin keys and make the protocol fully decentralized with control through on-chain governance using SXP. This upgrade will also pave the way for use on the Swipe DApps which will be interconnected to the v2 token contract. This upgrade will require users to utilize an exchange, custodial wallet provider, or a swap tool we will release and open-source.
Swipe will provide a more detailed guide on the token upgrade and announce it on all of our social channels once ready.
---
Stay up-to-date with all the latest news from Swipe
Website: https://swipe.io
Twitter: https://twitter.com/SwipeWallet
Facebook: https://facebook.com/Swipe
Instagram: https://instagram.com/Swipe
Medium: https://medium.com/Swipe
Telegram: https://t.me/SwipeWallet & https://t.me/Swipe
LinkedIn: https://www.linkedin.com/company/swipewallet
YouTube: https://youtube.com/SwipeWallet
submitted by SwipeWallet to Swipe_io [link] [comments]

An Overview of Arizona Primary Races - Part 4: Legislative Districts 11-20

Welcome back to my omnibus compendium of Arizona’s upcoming primary races in the style of my 2018 summaries. The primary is set to take place August 4th – early voting ballots should have been mailed out on or around July 8th.
Arizona’s a really interesting state (I may be a hair biased), since it not only is home to 2-3 swing House seats and a high-profile Senate race, but also tenuous majorities in both state houses that could – theoretically – neuter Ducey’s trifecta this fall. And counties have their races this year as well, so I’ve highlighted some of the fireworks ongoing in Maricopa.
And this is before factoring in the fact that our state is a COVID-19 hotspot, with an unpopular Republican Governor doing almost nothing to stop it.
If you’re interested about which district you live in, check https://azredistricting.org/districtlocato. If you want to get involved with your local Democratic party, find your legislative district on the previous link (NOT CD), and then search for your LD’s name at this link. Feel free to attend meetings, they’re a great way to get involved with candidates and like-minded individuals.
If you wish to donate to a “clean elections” candidate (mentioned in the post as “clean”), you will have to live in that candidate’s legislative district to give qualifying $5 contributions (check here if anyone needs it in your area), but they are allowed to accept a limited amount of “seed money” from people outside of the district. The three CorpComm candidates can take $5’s statewide.
If you do not want to vote at the polls, you will need to request an early ballot using the website of your county’s recorder prior to July 4th. Example links for Maricopa, Pima, and Pinal. Others available if needed.
Race ratings for listed primaries will be listed as Safe/Likely/Leans/Tilt/Tossup (alternatively Solid instead of Safe if my mind blanks) and are not indicative of my own preference for that seat. I’ll denote my personal primary preferences at the end of this series, as well as the best Republican ticket for the Dems if someone here really really wants to pull a GOP ballot in the primary. I do not advise it, but since I can't stop ya, you'll get my best suggestions.
Write-in candidates have yet to file, which could give us an outside chance at getting some Libertarians on the ballot (the Greens have lost their ballot access).
If you have any questions about voting in the primary, which races are the most contested, and how to get involved with other Democrats in Arizona, feel free to PM me.
All fundraising numbers here are as of 7/18/2020 (“Q2”).
District stats are listed for the race that involved the top Democratic vote-getter in the past two midterm cycles plus the last two presidential races, taken from Daily Kos’s legislative sheet – Clinton’16, Obama’12, Sinema’18, and Garcia’14 (not his 2018 run).
Part 1: Statewide and Congressional Races
Part 2: Maricopa County Races
Update 1: Congressional and County Rating Updates
Part 3: Legislative Districts 1-10
ALL OPINIONS ARE MY OWN SOLELY IN MY CAPACITY AS A VOTER IN ARIZONA, AND NOT REPRESENTATIVE OF ANY ORGANIZATIONS I WORK/ED FOR OR AM/WAS A MEMBER OF. THIS POST IS IN NO WAY ENDORSED BY THE ARIZONA DEMOCRATIC PARTY OR ANY SUB-ORGANIZATION THEREOF, OR ANY FILED CANDIDATE.
Alright, let’s get cracking, y’all. I’m going to try to save time and characters on the safer seats when I can, although of course I’ll expound on any fun stuff that comes up.
Legislative District 11 (McSally+9.93, Trump+13.9, Douglas+16.7, Romney+19.3)
The first district in this writeup installment is LD11, a district very close geographically and politically to LD8. Unlike LD8, however, LD11 has slowly been trending towards Democrats, instead of away from them. Encompassing the southern half of Pinal (including a large chunk of Casa Grande) and bits of Pima, LD11 could swing under the right conditions, but is probably a safe seat this year. That’s disappointing, since the incumbents in the district are pretty darn nasty.
Incumbent Senator Venden “Vince” Leach ($98K COH), a sort-of Great Value Mitch McConnell, loves to spend his time filing SB1487 complaints against various liberal towns in Arizona – basically, suing cities over their attempts to go above and beyond state law when it comes to certain issues. Leach leads the SB1487 leaderboard with 4 SB1487 suits, most recently targeting Pima County over COVID-19 safety regulations that were slightly stricter than state law. Joining the suit were his House counterparts, COVID-19 conspiracy-monger Bret Roberts ($22.4K COH) and actual goddamn Oathkeeper and Charlottesville truther Mark Finchem ($27K COH).
Facing Finchem and Roberts is the Democratic House nominee for LD11, Dr. Felipe Perez ($24.2K COH). Perez has made few waves online and I haven’t seen him even in the same tier of candidates as Girard in LD8, so he’s probably not going to supercharge this district into Dem. territory. But given the spike in public approval for the healthcare industry due to COVID, he may get lucky. On the Senate side, Leach’s opponent will be one of retired public administrator Linda Patterson ($4.7K COH, Clean) and Marine drill instructor Joanna Mendoza ($14.5K COH). Anything could happen between now and August, but Mendoza currently has a significant organizational, political (endorsements) and fiscal advantage over Patterson, and will probably be the nominee come August.
A well-run race could feasibly knock out Finchem or Roberts, but I’ve yet to see that happen. Still, it’s far out enough that I’m not going to slam the door shut on a Perez win just yet.
hunter15991 Rating: GOP primary unopposed, Safe Mendoza, Perez unopposed, Safe Leach, Safe Roberts, Likely Finchem general
Legislative District 12 (McSally+17.19, Trump+24.5, Douglas+17.84, Romney+33.35)
Really not going to focus much on this district to save space, as it’s a snoozefest. House Majority Leader Warren Petersen ($84.8K COH) is running for Senate to replace outgoing Sen. Eddie Farnsworth. Petersen faces Haitian DREAMer. former teacher, and 2018 LD-12 House nominee Lynsey Robinson ($1.4K COH). Robinson’s a great person, but lost her House race against Petersen by the 1v1 equivalent of 20 points, and shows no sign of knocking him off this time around.
Petersen’s runningmates, Rep. Travis Grantham ($39K COH) and Queen Creek Councilman Jake Hoffman ($107.7K COH) are unopposed in both the primary and general.
hunter15991 Rating: Primaries all unopposed, Safe Petersen general, GOP House unopposed
Legislative District 13 (McSally+21.59, Trump+26.96, Douglas+26.22, Romney+31.62)
Moving on to another Safe GOP district with not much activity – LD13! Stretching from the whiter Yuma neighborhoods all the way to Phoenix exurbs in Maricopa County (and the mirror image of LD4 to its south), LD13 routinely sends Republican slates to the legislature. This year, incumbents Sen. Sine Kerr ($58.5K COH), Rep. Tim Dunn ($60.4K COH), and Rep. Joanne Osborne ($15K COH) are all fighting to hold their seats.
Kerr is unopposed in both the primary and general, while Dunn and Osborne are in the opposite situation – they’ve got two elections between now and inauguration day. Democratic paralegal Mariana Sandoval ($3.1K COH, Clean) will put up little resistance for the GOP in the general, but the entrance of former Senator and former Speaker Pro Tem Steve Montenegro ($27.8K COH) could really shake up the LD13 House primary. Montenegro, a Salvadoran-American legislator who resigned his Senate seat to run for the CD-8 special election primary (he placed 3rd, ultimately losing to then-Sen. Debbie Lesko), was a rising star in the AZ-GOP before his resignation and contemporaneous sexting scandal. This Senate run could be a good way for him to get his foot back in the door, and since his election would single-handedly double the amount of non-white Republicans in the legislator, I would figure that some Arizona Republicans are excited that Montenegro is throwing his hat back into the ring.
I haven’t seen much about this primary online, but there’s vague general on GOP pages dinging Montenegro for his ties to a 2016 National Popular Vote bill in the legislature, which is a big purity sticking point for the further-right members of the Arizona GOP. That being said, the chatter is vague at best, and Montenegro has enough conservative cred (with endorsements from people like Joe Arpaio and former Rep. Trent Franks back during his special election run) that he will primarily face issues over the sexting scandal.
I’ll give Osborne and Dunn a slight advantage over their incumbency, financial well-being, and the issues in Montenegro’s closet, but this is a really tight race and Montenegro could very well end up back in the legislature this time next year.
hunter15991 Rating: Dem. unopposed, Kerr unopposed, Tilt Osborne, Tilt Dunn, All Safe GOP general
Legislative District 14 (McSally+23.83, Trump+26.24, Douglas+22.88, Romney+26.84)
This is yet another district where Democrats stand no real chance in competing this year, and haven’t in quite some time. Situated in SE Arizona, LD14 once incorporated some ancestrally Democratic mining towns in Greenlee and Graham County, but they’ve grown red enough in the past couple of decades that this district is now held by three GOP legislators.
Former House Speaker and current Sen. David Gowan ($60.9K COH) (who was previously in the news for trying to use a state vehicle to assist in a failed Congressional campaign) faces realtor Bob Karp ($12.9K COH, Clean) in the general, while House incumbents Rep. Gail “Tax porn to build the wall” Griffin ($50.5K COH) and Rep. Becky Nutt ($47.4K COH) face retired union activist Ronnie Maestas-Condos ($686 COH, Clean) and teacher Kim Beach-Moschetti ($13K COH, Clean). All 3 races will probably be easy GOP wins.
hunter15991 Rating: Candidates unopposed in primaries, All Safe GOP general
Legislative District 15 (McSally+8.01, Trump+16.61, Douglas+11.06, Romney+25.44)
LD15, up in Northern Scottsdale and Phoenix, is one of the final frontiers of suburban expansion for Arizona Democrats, along with the Mormon suburbs of the far East Valley (LD12, 16, and 25). A very wealthy area, LD15 has routinely been a GOP stronghold – but their hold on the area has been dissipating steadily rapidly in the Trump era. In 2018, two Dem. House candidates both managed to outperform the “single-shot” performance of a 2016 candidate, and Kristin Dybvig-Pawelko ($48.6K COH, hereafter “KDP”) improved on the district’s 2016 State Senate margin by several points despite facing a significantly more difficult opponent than the 2016 Democrat.
KDP is running again this year, as a single-shot candidate for the State House. Her opponents have yet to be set in stone, as both GOP Representatives are vacating their seats to run for higher office, and there are three GOP candidates in the August primary vying for two nominations. Veteran Steve Kaiser ($13.6K COH) and State House policy adviser Justin Wilmeth ($16K COH, $5.2K self-funded) are the nominal establishment picks for both seats, and have been endorsed by a whole host of GOP legislators. However, they face stiff competition from businessman Jarret Hamstreet ($23.2K COH, $10K self-funded), who boasts endorsements from GOP power-players like the local Chamber of Commerce and the NRA, as well as tacit support from the incumbent Senator in the district Heather Carter ($101.2K COH) (somewhat of an Arizona Lisa Murkowski). I’ve been able to find very little chatter on the race, but with Hamstreet’s significant fundraising advantage I definitely think he secures one of the two nominations this November. While the district is still quite red, KDP is no spring chicken, and facing Kasier, Hamstreet, or Wilmeth will be a lot easier than her run against Carter in 2018.
If I’m going to be honest, it is the GOP Senate primary that is almost as important as the House general election. Heather Carter has gotten on the bad side of quite a few conservative legislators during her tenure in the Senate, holding up GOP budgets with her partner in crime Paul Boyer in 2019 over a stalled child sexual assault statute of limitations bill and this year over an amendment to give additional funding to firefighters for PPE and to students for tuition support.
That amendment failed 15-15 thanks to one Kate Brophy McGee - more on her later.
Carter’s actual attempts at moderation (as opposed to McGee’s performative bullshit) has inspired current State Rep. Nancy Barto ($9.9K COH) to challenge her for the Senate. Barto has the support of both Kaiser and Wilmeth (as well as most of the GOP establishment) but has been routinely lagging behind Carter in fundraising (both in terms of current COH and overall amount raised). Carter has been bringing in more “moderate” and pro-public education GOP volunteers from all over Phoenix and is sure to put up a fight in August. As it stands, I think she narrowly pulls it off. There is no Democratic Senate opponent in the general, so winning the primary automatically wins the seat.
If you’ve got GOP friends in AZ who just can’t bare phonebanking for Democratic candidates but complain about the state of the Republican party, send them her way.
Carter has beliefs. Barto has none.
Slate totals:
  • CarteHamstreet: $124.4K
  • KDP: $48.6K
  • Barto coalition (KaiseWilmeth/Barto): $40.5K
hunter15991 Rating: Dem. unopposed, Tilt Carter, Lean Hamstreet, Tilt Kaiser, GOP Sen. unopposed in general, Likely Hamstreet, 2nd GOP unopposed
Legislative District 16 (McSally+17.58, Trump+28.37, Douglas+17, Romney+28.11)
LD16, out on the border between Pinal and Maricopa County, is probably the reddest district in Arizona that could still be relatively considered “suburban”. The only Democratic candidate is write-in House candidate Rev. Helen Hunter ($783 COH), and while her background is stellar (incl. past work with the NAACP, Mesa PD’s Use of Force Committee, and other community involvement), there isn’t even a guarantee she’ll make it onto the November ballot.
Meanwhile, Rep. Kelly Townsend ($15.5K COH) has tired of the State House (just like she tired of her furry fursona, and is running unopposed for State Senate.
The real drama, therefore, is in the GOP State House primary to win Townsend’s old seat. Incumbent Rep. John Fillmore ($12.9K COH) is running for another term, and seems set to win one of the two nominations. Townsend’s former seat is contested by respiratory therapist Liza Godzich ($14.6K COH) (who wins the “most moderate” title by default by virtue of taking COVID kinda seriously), CorpComm policy advisor Jacqueline Parker ($16.4K COH), and school choice activist/general lunatic Forest Moriarty ($17.7K COH).
Moriarty has the valuable Townsend endorsement, but has not been able to consolidate support easily elsewhere – Parker’s CorpComm ties let her bring quite a few assets of her own to bear, as well as endorsements from Congressman Andy Biggs and the NRA.
This election will be a test of Townsend’s downballot coattails, as well as those of the school choice movement in AZ parlaying any support they may have into legislative results. Success for Moriarty here could go as far as inspiring Townsend to run for Governor. We’ll see if it comes to that.
hunter15991 Rating: No Dem. filed (pending write-in), Townsend unopposed, Lean Fillmore, Tossup ParkeMoriarty, GOP unopposed in general
Legislative District 17 (Sinema+3.53, Trump+4.09, Douglas+3.12, Romney+14.16)
One of the reasons I significantly delayed writing these writeups was because I was dreading writing about LD17. Not to doxx myself completely, but in 2018 I had far too many negative encounters with the incumbent Democratic Representative, Jennifer Pawlik ($101.3K COH) that made me routinely question my support of her. I’m still trying to heal the wounds in multiple relationships I have with friends that were caused by Pawlik’s actions.
I deeply regret ever lifting a finger to help her when I had opportunities in other districts. But because her actions never got physical, because the stakes are so high this year, and because too much unsubstantiated negative talk about a candidate can get a post deleted - I don’t wish to publicly expound on her actions (nor put words in the mouth of other people who interacted with her). Feel free to PM if interested.
Pawlik as a candidate is a grab-bag. On paper she’d be a strong option for a suburban district – a teacher and education funding activist with a prior win during the 2018 wave. However, behind the scenes she is quite a poor campaigner in ways that directly impact Democratic candidates’ odds and presences in the district, including her own - which makes me more apprehensive of her odds of re-election than her fellow Jennifer in HD18 (Rep. Jennifer Jermaine), who’s quite similar to Pawlik on the whole.
Pawlik’s Senate runningmate this year is local businessman and first-generation American Ajlan “AJ” Kurdoglu ($51.5K COH). AJ’s a good guy and more serious of a campaigner than Pawlik, and is on well enough terms with her that no inter-candidate drama will probably happen this fall (which would be a welcome change for the district). He’s been slightly outpacing her in fundraising and seems to be hitting the ground running.
The Republican incumbents in this district are Sen. JD Mesnard ($102.6K COH), who moonlights as legal counsel for an organization categorized as a hate group by the SPLC, and Jeff Wenninger ($117.8K COH), a backbench Bitcoin bro. Wenninger and Mesnard have both been in their seats for a while, and this cycle were backing Chandler Vice Mayor (and JD Mesnard’s mom) Nora Ellen for the other State House seat – Ellen lost to Pawlik in 2018.
But in a stroke of luck for Pawlik, Ellen failed to qualify for the ballot this year. However, in a similar stroke of luck for the GOP Liz Harris ($27.3K COH, $21.3K self-funded) - a local realtor (like Ellen) - did qualify. I’ve yet to discern just how close she is with Mesnard and Wenninger, and how much cash she is willing to dump into this race, but in terms of how random non-GOP establishment candidates the LD17 Republicans could have done far worse than Harris.
All the pieces in this district would point to a shift even further left than it was in 2018, and had I not known what I know about Pawlik this would be a Tilt D House/Tossup Senate. But I don’t know if she’s changed since 2018 - and if she hasn’t, there is no guarantee that she won’t snatch defeat from the jaws of victory.
hunter15991 Rating: Primaries uncontested, Tilt Mesnard, Tossup House (Pawlik/Harris), Safe Wenninger
Legislative District 18 (Sinema+18.58, Clinton+10.39, Garcia+12.5, Romney+1.93)
Like LD10 in the previous part of my writeup, the situation in LD18 is another blast of the proverbial Gjallarhorn for the AZ-GOP’s suburban chances. Once a very competitive district (fully red as recently as 2016), LD18 is now held by 3 Democrats – Sen. Sean Bowie ($106.3K COH), Rep. Jennifer Jermaine ($65.7K COH), and Rep. Mitzi Epstein ($60.8K COH). Bowie and Epstein have carved rather moderate paths in their respective houses having been elected back when this district was more competitive, while Jermaine’s tacked a bit more to the left, and has been a prominent voice for increasing education funding (prior to running for the State House she was a public school funding activist and IIRC Moms Demand Action member) and for missing indigenous women (Jermaine is part indigenous herself).
The GOP’s troubles in this district started around the filing deadline, when one of their candidates, Alyssa Shearer, withdrew from the primary. Super anti-abortion nut Don Hawker ($619 COH) filed as a write-in candidate to replace her, but it’s uncertain if he’ll qualify for the general election. Their other House candidate, Bob Robson ($11K COH) is on paper a solid candidate (being a former Speaker Pro Tem of the state house), but lost by the equivalent of 6% to Epstein in 2016 and by 19% when he ran for Kyrene Justice of the Peace (a district that roughly matches the boundaries of LD18. Robson’s an old warhorse) - going 0 for 2 since 2014. It’s a sign of the times that he and discount Scott Roeder are the two potential House candidates for the GOP in this district.
In the Senate, the GOP doesn’t fare much better. Real estate agent Suzanne Sharer ($4.2K COH) is trying to run a semblance of a decent race against Sen. Bowie, but keeps using her campaign Twitter (@blondeandsmart – I promise you that’s a real handle) to retweet QAnon shit. Sharer is going nowhere in November. That’s if she makes it to November, given her past retweets advocating for people to drink bleach to cure COVID.
hunter15991 Rating: Primaries uncontested, All Safe Dem. general
Legislative District 19 (Sinema+44.97, Clinton+40.25, Garcia+32.38, Obama+34.3)
LD19 is a safe Democratic district in the West Valley, where all the drama is happening in the primary. Rep. Lorenzo Sierra ($9.3K COH) and Rep. Diego Espinoza ($25.2K COH) are both running for re-election, defending their seats against challenger Leezah Sun ($5.1K COH), a local activist. Sierra and Espinoza haven’t been particularly conservative in their voting records in the legislator, but have taken some flack from the more progressive wing of the party lately for outside corporate expenditures in this primary. I’m honestly unsure why these PACs are weighing in given that Sun isn’t running all that good of a campaign, but I guess better spend it here than in tighter primaries. Assistant State Minority Leader Lupe Contreras ($7.2K COH) is unopposed in his primary.
In the general, there’s one GOP candidate for both House and Senate, but both are write-ins and could possibly not qualify for the ballot. For now, Democrats are unopposed in this district in the general.
hunter15991 Contreras uncontested, Safe Sierra, Safe Espinoza, Uncontested Dem. general
Legislative District 20 (Sinema+3.7, Trump+8.01, Douglas+0.04, Romney+12.87)
LD20 is another suburban district where Democrats could see sizable gains this fall. Won by Sinema and Maricopa County Recorder Adrian Fontes, and almost snagged by David Garcia during the 2014 Superintendent race, LD20 has been on the Arizona Democratic Party’s mind for a few cycles now. Their candidates this year are strong – 2018 Senate nominee Doug Ervin ($94.6K COH) has filed for a rematch after losing by 4 in 2018 (where an independent ex-GOP candidate took 7% - Ervin claims Quelland actually hurt him more than district Republicans), and retired teacher Judy Schweibert ($158.2K COH) is running for House. Both are running bang-up campaigns and seem set to make November a problem for local Republicans, and Ervin has eschewed the public funding he took last time in order to be able to fundraise better for the slugfest ahead.
The local GOP, however, isn’t taking this lying down. Representatives Shawnna Bolick ($161.8K COH) - who was almost bumped off the ballot for using a PO Box as her filing address - and Anthony Kern ($73.4K COH) - an ex-cop on the Brady “untrustworthy cop” list - have been building their warchests in preparation for this cycle after narrowly hanging on in 2018 (despite both Democrats in that race running with public funding). While Bolick has typically stayed out of especially heinous controversy on social media (despite once posting that all masks come from Wuhan and are thus contaminated with COVID), Kern’s time on the force seems to have stuck with him, and his Twitter feed is full of a lot of pro-cop posts and whatnot. With Schweibert running as a single-shot candidate this year I can see Kern’s tendency of accidentally discharging his foot into his mouth finally coming back to bite him.
On the Senate side the past election results are slightly more promising than the House, but the opponent is tougher as well. Sen. Paul Boyer ($50.5K COH) is probably the closest there is to a living John McCain in the Arizona Legislature (not to deify him too much – he’s still conservative), having blocked two GOP budgets in the past two years along with Sen. Heather Carter (see LD15). In 2019 this was over a child sexual assault reform bill (extending the statute of limitations), and in 2020 this was over a lack of funding to firefighters and university students in the emergency “skinny” COVID budget the legislature passed in the spring. His attempts at moderation are visible outside of that: Boyer’s abysmal Q2 fundraising – per his own words – came from not fundraising at all during the 5 month long legislative session despite campaign finance rules only banning lobbyist contributions during the session (and I guess that’s commendable self-policing), and on his website he stops just short of calling for abortion to be banned, which makes him Margaret fucking Sanger among the current AZ-GOP.
That’s not to say that people shouldn’t support Ervin with all it takes – hell, if anything he’ll need more help to oust Boyer. Ultimately I think Ervin holds a narrow lead in this race with the absence of Quelland and with far better fundraising than what the LD20 slate had last year, but the election is still quite far away. If I had to pick one Democrat to win in this district, it’d be Schweibert.
hunter15991 Rating: Primaries uncontested, Tilt Ervin, Tilt Schweibert, 2nd House uncontested
submitted by hunter15991 to VoteDEM [link] [comments]

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31
Submitted for consideration to The Great Reddit Scaling Bake-Off
Baked by the pastry chefs at Offchain Labs
Please send questions or comments to [[email protected] ](mailto:[email protected])
1. Overview
We're excited to submit Arbitrum Rollup for consideration to The Great Reddit Scaling Bake-Off. Arbitrum Rollup is the only Ethereum scaling solution that supports arbitrary smart contracts without compromising on Ethereum's security or adding points of centralization. For Reddit, this means that Arbitrum can not only scale the minting and transfer of Community Points, but it can foster a creative ecosystem built around Reddit Community Points enabling points to be used in a wide variety of third party applications. That's right -- you can have your cake and eat it too!
Arbitrum Rollup isn't just Ethereum-style. Its Layer 2 transactions are byte-for-byte identical to Ethereum, which means Ethereum users can continue to use their existing addresses and wallets, and Ethereum developers can continue to use their favorite toolchains and development environments out-of-the-box with Arbitrum. Coupling Arbitrum’s tooling-compatibility with its trustless asset interoperability, Reddit not only can scale but can onboard the entire Ethereum community at no cost by giving them the same experience they already know and love (well, certainly know).
To benchmark how Arbitrum can scale Reddit Community Points, we launched the Reddit contracts on an Arbitrum Rollup chain. Since Arbitrum provides full Solidity support, we didn't have to rewrite the Reddit contracts or try to mimic their functionality using an unfamiliar paradigm. Nope, none of that. We launched the Reddit contracts unmodified on Arbitrum Rollup complete with support for minting and distributing points. Like every Arbitrum Rollup chain, the chain included a bridge interface in which users can transfer Community Points or any other asset between the L1 and L2 chains. Arbitrum Rollup chains also support dynamic contract loading, which would allow third-party developers to launch custom ecosystem apps that integrate with Community Points on the very same chain that runs the Reddit contracts.
1.1 Why Ethereum
Perhaps the most exciting benefit of distributing Community Points using a blockchain is the ability to seamlessly port points to other applications and use them in a wide variety of contexts. Applications may include simple transfers such as a restaurant that allows Redditors to spend points on drinks. Or it may include complex smart contracts -- such as placing Community Points as a wager for a multiparty game or as collateral in a financial contract.
The common denominator between all of the fun uses of Reddit points is that it needs a thriving ecosystem of both users and developers, and the Ethereum blockchain is perhaps the only smart contract platform with significant adoption today. While many Layer 1 blockchains boast lower cost or higher throughput than the Ethereum blockchain, more often than not, these attributes mask the reality of little usage, weaker security, or both.
Perhaps another platform with significant usage will rise in the future. But today, Ethereum captures the mindshare of the blockchain community, and for Community Points to provide the most utility, the Ethereum blockchain is the natural choice.
1.2 Why Arbitrum
While Ethereum's ecosystem is unmatched, the reality is that fees are high and capacity is too low to support the scale of Reddit Community Points. Enter Arbitrum. Arbitrum Rollup provides all of the ecosystem benefits of Ethereum, but with orders of magnitude more capacity and at a fraction of the cost of native Ethereum smart contracts. And most of all, we don't change the experience from users. They continue to use the same wallets, addresses, languages, and tools.
Arbitrum Rollup is not the only solution that can scale payments, but it is the only developed solution that can scale both payments and arbitrary smart contracts trustlessly, which means that third party users can build highly scalable add-on apps that can be used without withdrawing money from the Rollup chain. If you believe that Reddit users will want to use their Community Points in smart contracts--and we believe they will--then it makes the most sense to choose a single scaling solution that can support the entire ecosystem, eliminating friction for users.
We view being able to run smart contracts in the same scaling solution as fundamentally critical since if there's significant demand in running smart contracts from Reddit's ecosystem, this would be a load on Ethereum and would itself require a scaling solution. Moreover, having different scaling solutions for the minting/distribution/spending of points and for third party apps would be burdensome for users as they'd have to constantly shuffle their Points back and forth.
2. Arbitrum at a glance
Arbitrum Rollup has a unique value proposition as it offers a combination of features that no other scaling solution achieves. Here we highlight its core attributes.
Decentralized. Arbitrum Rollup is as decentralized as Ethereum. Unlike some other Layer 2 scaling projects, Arbitrum Rollup doesn't have any centralized components or centralized operators who can censor users or delay transactions. Even in non-custodial systems, centralized components provide a risk as the operators are generally incentivized to increase their profit by extracting rent from users often in ways that severely degrade user experience. Even if centralized operators are altruistic, centralized components are subject to hacking, coercion, and potential liability.
Massive Scaling. Arbitrum achieves order of magnitude scaling over Ethereum's L1 smart contracts. Our software currently supports 453 transactions-per-second for basic transactions (at 1616 Ethereum gas per tx). We have a lot of room left to optimize (e.g. aggregating signatures), and over the next several months capacity will increase significantly. As described in detail below, Arbitrum can easily support and surpass Reddit's anticipated initial load, and its capacity will continue to improve as Reddit's capacity needs grow.
Low cost. The cost of running Arbitrum Rollup is quite low compared to L1 Ethereum and other scaling solutions such as those based on zero-knowledge proofs. Layer 2 fees are low, fixed, and predictable and should not be overly burdensome for Reddit to cover. Nobody needs to use special equipment or high-end machines. Arbitrum requires validators, which is a permissionless role that can be run on any reasonable on-line machine. Although anybody can act as a validator, in order to protect against a “tragedy of the commons” and make sure reputable validators are participating, we support a notion of “invited validators” that are compensated for their costs. In general, users pay (low) fees to cover the invited validators’ costs, but we imagine that Reddit may cover this cost for its users. See more on the costs and validator options below.
Ethereum Developer Experience. Not only does Arbitrum support EVM smart contracts, but the developer experience is identical to that of L1 Ethereum contracts and fully compatible with Ethereum tooling. Developers can port existing Solidity apps or write new ones using their favorite and familiar toolchains (e.g. Truffle, Buidler). There are no new languages or coding paradigms to learn.
Ethereum wallet compatibility. Just as in Ethereum, Arbitrum users need only hold keys, but do not have to store any coin history or additional data to protect or access their funds. Since Arbitrum transactions are semantically identical to Ethereum L1 transactions, existing Ethereum users can use their existing Ethereum keys with their existing wallet software such as Metamask.
Token interoperability. Users can easily transfer their ETH, ERC-20 and ERC-721 tokens between Ethereum and the Arbitrum Rollup chain. As we explain in detail below, it is possible to mint tokens in L2 that can subsequently be withdrawn and recognized by the L1 token contract.
Fast finality. Transactions complete with the same finality time as Ethereum L1 (and it's possible to get faster finality guarantees by trading away trust assumptions; see the Arbitrum Rollup whitepaper for details).
Non-custodial. Arbitrum Rollup is a non-custodial scaling solution, so users control their funds/points and neither Reddit nor anyone else can ever access or revoke points held by users.
Censorship Resistant. Since it's completely decentralized, and the Arbitrum protocol guarantees progress trustlessly, Arbitrum Rollup is just as censorship-proof as Ethereum.
Block explorer. The Arbitrum Rollup block explorer allows users to view and analyze transactions on the Rollup chain.
Limitations
Although this is a bake-off, we're not going to sugar coat anything. Arbitrum Rollup, like any Optimistic Rollup protocol, does have one limitation, and that's the delay on withdrawals.
As for the concrete length of the delay, we've done a good deal of internal modeling and have blogged about this as well. Our current modeling suggests a 3-hour delay is sufficient (but as discussed in the linked post there is a tradeoff space between the length of the challenge period and the size of the validators’ deposit).
Note that this doesn't mean that the chain is delayed for three hours. Arbitrum Rollup supports pipelining of execution, which means that validators can keep building new states even while previous ones are “in the pipeline” for confirmation. As the challenge delays expire for each update, a new state will be confirmed (read more about this here).
So activity and progress on the chain are not delayed by the challenge period. The only thing that's delayed is the consummation of withdrawals. Recall though that any single honest validator knows immediately (at the speed of L1 finality) which state updates are correct and can guarantee that they will eventually be confirmed, so once a valid withdrawal has been requested on-chain, every honest party knows that the withdrawal will definitely happen. There's a natural place here for a liquidity market in which a validator (or someone who trusts a validator) can provide withdrawal loans for a small interest fee. This is a no-risk business for them as they know which withdrawals will be confirmed (and can force their confirmation trustlessly no matter what anyone else does) but are just waiting for on-chain finality.
3. The recipe: How Arbitrum Rollup works
For a description of the technical components of Arbitrum Rollup and how they interact to create a highly scalable protocol with a developer experience that is identical to Ethereum, please refer to the following documents:
Arbitrum Rollup Whitepaper
Arbitrum academic paper (describes a previous version of Arbitrum)
4. Developer docs and APIs
For full details about how to set up and interact with an Arbitrum Rollup chain or validator, please refer to our developer docs, which can be found at https://developer.offchainlabs.com/.
Note that the Arbitrum version described on that site is older and will soon be replaced by the version we are entering in Reddit Bake-Off, which is still undergoing internal testing before public release.
5. Who are the validators?
As with any Layer 2 protocol, advancing the protocol correctly requires at least one validator (sometimes called block producers) that is honest and available. A natural question is: who are the validators?
Recall that the validator set for an Arbitrum chain is open and permissionless; anyone can start or stop validating at will. (A useful analogy is to full nodes on an L1 chain.) But we understand that even though anyone can participate, Reddit may want to guarantee that highly reputable nodes are validating their chain. Reddit may choose to validate the chain themselves and/or hire third-party validators.To this end, we have begun building a marketplace for validator-for-hire services so that dapp developers can outsource validation services to reputable nodes with high up-time. We've announced a partnership in which Chainlink nodes will provide Arbitrum validation services, and we expect to announce more partnerships shortly with other blockchain infrastructure providers.
Although there is no requirement that validators are paid, Arbitrum’s economic model tracks validators’ costs (e.g. amount of computation and storage) and can charge small fees on user transactions, using a gas-type system, to cover those costs. Alternatively, a single party such as Reddit can agree to cover the costs of invited validators.
6. Reddit Contract Support
Since Arbitrum contracts and transactions are byte-for-byte compatible with Ethereum, supporting the Reddit contracts is as simple as launching them on an Arbitrum chain.
Minting. Arbitrum Rollup supports hybrid L1/L2 tokens which can be minted in L2 and then withdrawn onto the L1. An L1 contract at address A can make a special call to the EthBridge which deploys a "buddy contract" to the same address A on an Arbitrum chain. Since it's deployed at the same address, users can know that the L2 contract is the authorized "buddy" of the L1 contract on the Arbitrum chain.
For minting, the L1 contract is a standard ERC-20 contract which mints and burns tokens when requested by the L2 contract. It is paired with an ERC-20 contract in L2 which mints tokens based on whatever programmer provided minting facility is desired and burns tokens when they are withdrawn from the rollup chain. Given this base infrastructure, Arbitrum can support any smart contract based method for minting tokens in L2, and indeed we directly support Reddit's signature/claim based minting in L2.
Batch minting. What's better than a mint cookie? A whole batch! In addition to supporting Reddit’s current minting/claiming scheme, we built a second minting design, which we believe outperforms the signature/claim system in many scenarios.
In the current system, Reddit periodically issues signed statements to users, who then take those statements to the blockchain to claim their tokens. An alternative approach would have Reddit directly submit the list of users/amounts to the blockchain and distribute the tokens to the users without the signature/claim process.
To optimize the cost efficiency of this approach, we designed an application-specific compression scheme to minimize the size of the batch distribution list. We analyzed the data from Reddit's previous distributions and found that the data is highly compressible since token amounts are small and repeated, and addresses appear multiple times. Our function groups transactions by size, and replaces previously-seen addresses with a shorter index value. We wrote client code to compress the data, wrote a Solidity decompressing function, and integrated that function into Reddit’s contract running on Arbitrum.
When we ran the compression function on the previous Reddit distribution data, we found that we could compress batched minting data down to to 11.8 bytes per minting event (averaged over a 6-month trace of Reddit’s historical token grants)compared with roughly 174 bytes of on-chain data needed for the signature claim approach to minting (roughly 43 for an RLP-encoded null transaction + 65 for Reddit's signature + 65 for the user's signature + roughly 8 for the number of Points) .
The relative benefit of the two approaches with respect to on-chain call data cost depends on the percentage of users that will actually claim their tokens on chain. With the above figures, batch minting will be cheaper if roughly 5% of users redeem their claims. We stress that our compression scheme is not Arbitrum-specific and would be beneficial in any general-purpose smart contract platform.
8. Benchmarks and costs
In this section, we give the full costs of operating the Reddit contracts on an Arbitrum Rollup chain including the L1 gas costs for the Rollup chain, the costs of computation and storage for the L2 validators as well as the capital lockup requirements for staking.
Arbitrum Rollup is still on testnet, so we did not run mainnet benchmarks. Instead, we measured the L1 gas cost and L2 workload for Reddit operations on Arbitrum and calculated the total cost assuming current Ethereum gas prices. As noted below in detail, our measurements do not assume that Arbitrum is consuming the entire capacity of Ethereum. We will present the details of our model now, but for full transparency you can also play around with it yourself and adjust the parameters, by copying the spreadsheet found here.
Our cost model is based on measurements of Reddit’s contracts, running unmodified (except for the addition of a batch minting function) on Arbitrum Rollup on top of Ethereum.
On the distribution of transactions and frequency of assertions. Reddit's instructions specify the following minimum parameters that submissions should support:
Over a 5 day period, your scaling PoC should be able to handle:
  • 100,000 point claims (minting & distributing points)
  • 25,000 subscriptions
  • 75,000 one-off points burning
  • 100,000 transfers
We provide the full costs of operating an Arbitrum Rollup chain with this usage under the assumption that tokens are minted or granted to users in batches, but other transactions are uniformly distributed over the 5 day period. Unlike some other submissions, we do not make unrealistic assumptions that all operations can be submitted in enormous batches. We assume that batch minting is done in batches that use only a few percent on an L1 block’s gas, and that other operations come in evenly over time and are submitted in batches, with one batch every five minutes to keep latency reasonable. (Users are probably already waiting for L1 finality, which takes at least that long to achieve.)
We note that assuming that there are only 300,000 transactions that arrive uniformly over the 5 day period will make our benchmark numbers lower, but we believe that this will reflect the true cost of running the system. To see why, say that batches are submitted every five minutes (20 L1 blocks) and there's a fixed overhead of c bytes of calldata per batch, the cost of which will get amortized over all transactions executed in that batch. Assume that each individual transaction adds a marginal cost of t. Lastly assume the capacity of the scaling system is high enough that it can support all of Reddit's 300,000 transactions within a single 20-block batch (i.e. that there is more than c + 300,000*t byes of calldata available in 20 blocks).
Consider what happens if c, the per-batch overhead, is large (which it is in some systems, but not in Arbitrum). In the scenario that transactions actually arrive at the system's capacity and each batch is full, then c gets amortized over 300,000 transactions. But if we assume that the system is not running at capacity--and only receives 300,000 transactions arriving uniformly over 5 days-- then each 20-block assertion will contain about 200 transactions, and thus each transaction will pay a nontrivial cost due to c.
We are aware that other proposals presented scaling numbers assuming that 300,000 transactions arrived at maximum capacity and was executed in a single mega-transaction, but according to our estimates, for at least one such report, this led to a reported gas price that was 2-3 orders of magnitude lower than it would have been assuming uniform arrival. We make more realistic batching assumptions, and we believe Arbitrum compares well when batch sizes are realistic.
Our model. Our cost model includes several sources of cost:
  • L1 gas costs: This is the cost of posting transactions as calldata on the L1 chain, as well as the overhead associated with each batch of transactions, and the L1 cost of settling transactions in the Arbitrum protocol.
  • Validator’s staking costs: In normal operation, one validator will need to be staked. The stake is assumed to be 0.2% of the total value of the chain (which is assumed to be $1 per user who is eligible to claim points). The cost of staking is the interest that could be earned on the money if it were not staked.
  • Validator computation and storage: Every validator must do computation to track the chain’s processing of transactions, and must maintain storage to keep track of the contracts’ EVM storage. The cost of computation and storage are estimated based on measurements, with the dollar cost of resources based on Amazon Web Services pricing.
It’s clear from our modeling that the predominant cost is for L1 calldata. This will probably be true for any plausible rollup-based system.
Our model also shows that Arbitrum can scale to workloads much larger than Reddit’s nominal workload, without exhausting L1 or L2 resources. The scaling bottleneck will ultimately be calldata on the L1 chain. We believe that cost could be reduced substantially if necessary by clever encoding of data. (In our design any compression / decompression of L2 transaction calldata would be done by client software and L2 programs, never by an L1 contract.)
9. Status of Arbitrum Rollup
Arbitrum Rollup is live on Ethereum testnet. All of the code written to date including everything included in the Reddit demo is open source and permissively licensed under the Apache V2 license. The first testnet version of Arbitrum Rollup was released on testnet in February. Our current internal version, which we used to benchmark the Reddit contracts, will be released soon and will be a major upgrade.
Both the Arbitrum design as well as the implementation are heavily audited by independent third parties. The Arbitrum academic paper was published at USENIX Security, a top-tier peer-reviewed academic venue. For the Arbitrum software, we have engaged Trail of Bits for a security audit, which is currently ongoing, and we are committed to have a clean report before launching on Ethereum mainnet.
10. Reddit Universe Arbitrum Rollup Chain
The benchmarks described in this document were all measured using the latest internal build of our software. When we release the new software upgrade publicly we will launch a Reddit Universe Arbitrum Rollup chain as a public demo, which will contain the Reddit contracts as well as a Uniswap instance and a Connext Hub, demonstrating how Community Points can be integrated into third party apps. We will also allow members of the public to dynamically launch ecosystem contracts. We at Offchain Labs will cover the validating costs for the Reddit Universe public demo.
If the folks at Reddit would like to evaluate our software prior to our public demo, please email us at [email protected] and we'd be more than happy to provide early access.
11. Even more scaling: Arbitrum Sidechains
Rollups are an excellent approach to scaling, and we are excited about Arbitrum Rollup which far surpasses Reddit's scaling needs. But looking forward to Reddit's eventual goal of supporting hundreds of millions of users, there will likely come a time when Reddit needs more scaling than any Rollup protocol can provide.
While Rollups greatly reduce costs, they don't break the linear barrier. That is, all transactions have an on-chain footprint (because all calldata must be posted on-chain), albeit a far smaller one than on native Ethereum, and the L1 limitations end up being the bottleneck for capacity and cost. Since Ethereum has limited capacity, this linear use of on-chain resources means that costs will eventually increase superlinearly with traffic.
The good news is that we at Offchain Labs have a solution in our roadmap that can satisfy this extreme-scaling setting as well: Arbitrum AnyTrust Sidechains. Arbitrum Sidechains are similar to Arbitrum Rollup, but deviate in that they name a permissioned set of validators. When a chain’s validators agree off-chain, they can greatly reduce the on-chain footprint of the protocol and require almost no data to be put on-chain. When validators can't reach unanimous agreement off-chain, the protocol reverts to Arbitrum Rollup. Technically, Arbitrum Sidechains can be viewed as a hybrid between state channels and Rollup, switching back and forth as necessary, and combining the performance and cost that state channels can achieve in the optimistic case, with the robustness of Rollup in other cases. The core technical challenge is how to switch seamlessly between modes and how to guarantee that security is maintained throughout.
Arbitrum Sidechains break through this linear barrier, while still maintaining a high level of security and decentralization. Arbitrum Sidechains provide the AnyTrust guarantee, which says that as long as any one validator is honest and available (even if you don't know which one will be), the L2 chain is guaranteed to execute correctly according to its code and guaranteed to make progress. Unlike in a state channel, offchain progress does not require unanimous consent, and liveness is preserved as long as there is a single honest validator.
Note that the trust model for Arbitrum Sidechains is much stronger than for typical BFT-style chains which introduce a consensus "voting" protocols among a small permissioned group of validators. BFT-based protocols require a supermajority (more than 2/3) of validators to agree. In Arbitrum Sidechains, by contrast, all you need is a single honest validator to achieve guaranteed correctness and progress. Notice that in Arbitrum adding validators strictly increases security since the AnyTrust guarantee provides correctness as long as any one validator is honest and available. By contrast, in BFT-style protocols, adding nodes can be dangerous as a coalition of dishonest nodes can break the protocol.
Like Arbitrum Rollup, the developer and user experiences for Arbitrum Sidechains will be identical to that of Ethereum. Reddit would be able to choose a large and diverse set of validators, and all that they would need to guarantee to break through the scaling barrier is that a single one of them will remain honest.
We hope to have Arbitrum Sidechains in production in early 2021, and thus when Reddit reaches the scale that surpasses the capacity of Rollups, Arbitrum Sidechains will be waiting and ready to help.
While the idea to switch between channels and Rollup to get the best of both worlds is conceptually simple, getting the details right and making sure that the switch does not introduce any attack vectors is highly non-trivial and has been the subject of years of our research (indeed, we were working on this design for years before the term Rollup was even coined).
12. How Arbitrum compares
We include a comparison to several other categories as well as specific projects when appropriate. and explain why we believe that Arbitrum is best suited for Reddit's purposes. We focus our attention on other Ethereum projects.
Payment only Rollups. Compared to Arbitrum Rollup, ZK-Rollups and other Rollups that only support token transfers have several disadvantages:
  • As outlined throughout the proposal, we believe that the entire draw of Ethereum is in its rich smart contracts support which is simply not achievable with today's zero-knowledge proof technology. Indeed, scaling with a ZK-Rollup will add friction to the deployment of smart contracts that interact with Community Points as users will have to withdraw their coins from the ZK-Rollup and transfer them to a smart contract system (like Arbitrum). The community will be best served if Reddit builds on a platform that has built-in, frictionless smart-contract support.
  • All other Rollup protocols of which we are aware employ a centralized operator. While it's true that users retain custody of their coins, the centralized operator can often profit from censoring, reordering, or delaying transactions. A common misconception is that since they're non-custodial protocols, a centralized sequencer does not pose a risk but this is incorrect as the sequencer can wreak havoc or shake down users for side payments without directly stealing funds.
  • Sidechain type protocols can eliminate some of these issues, but they are not trustless. Instead, they require trust in some quorum of a committee, often requiring two-third of the committee to be honest, compared to rollup protocols like Arbitrum that require only a single honest party. In addition, not all sidechain type protocols have committees that are diverse, or even non-centralized, in practice.
  • Plasma-style protocols have a centralized operator and do not support general smart contracts.
13. Concluding Remarks
While it's ultimately up to the judges’ palate, we believe that Arbitrum Rollup is the bakeoff choice that Reddit kneads. We far surpass Reddit's specified workload requirement at present, have much room to optimize Arbitrum Rollup in the near term, and have a clear path to get Reddit to hundreds of millions of users. Furthermore, we are the only project that gives developers and users the identical interface as the Ethereum blockchain and is fully interoperable and tooling-compatible, and we do this all without any new trust assumptions or centralized components.
But no matter how the cookie crumbles, we're glad to have participated in this bake-off and we thank you for your consideration.
About Offchain Labs
Offchain Labs, Inc. is a venture-funded New York company that spun out of Princeton University research, and is building the Arbitrum platform to usher in the next generation of scalable, interoperable, and compatible smart contracts. Offchain Labs is backed by Pantera Capital, Compound VC, Coinbase Ventures, and others.
Leadership Team
Ed Felten
Ed Felten is Co-founder and Chief Scientist at Offchain Labs. He is on leave from Princeton University, where he is the Robert E. Kahn Professor of Computer Science and Public Affairs. From 2015 to 2017 he served at the White House as Deputy United States Chief Technology Officer and senior advisor to the President. He is an ACM Fellow and member of the National Academy of Engineering. Outside of work, he is an avid runner, cook, and L.A. Dodgers fan.
Steven Goldfeder
Steven Goldfeder is Co-founder and Chief Executive Officer at Offchain Labs. He holds a PhD from Princeton University, where he worked at the intersection of cryptography and cryptocurrencies including threshold cryptography, zero-knowledge proof systems, and post-quantum signatures. He is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies, and he has previously worked at Google and Microsoft Research, where he co-invented the Picnic signature algorithm. When not working, you can find Steven spending time with his family, taking a nature walk, or twisting balloons.
Harry Kalodner
Harry Kalodner is Co-founder and Chief Technology Officer at Offchain Labs where he leads the engineering team. Before the company he attended Princeton as a Ph.D candidate where his research explored economics, anonymity, and incentive compatibility of cryptocurrencies, and he also has worked at Apple. When not up at 3:00am writing code, Harry occasionally sleeps.
submitted by hkalodner to ethereum [link] [comments]

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

https://preview.redd.it/rqt2dldyg8e51.jpg?width=1044&format=pjpg&auto=webp&s=777ae9d4fbbb54c3540682b72700fc4ba3de0a44
We are excited to participate and present Syscoin Platform's ideal characteristics and capabilities towards a well-rounded Reddit Community Points solution!
Our scaling solution for Reddit Community Points involves 2-way peg interoperability with Ethereum. This will provide a scalable token layer built specifically for speed and high volumes of simple value transfers at a very low cost, while providing sovereign ownership and onchain finality.
Token transfers scale by taking advantage of a globally sorting mempool that provides for probabilistically secure assumptions of “as good as settled”. The opportunity here for token receivers is to have an app-layer interactivity on the speed/security tradeoff (99.9999% assurance within 10 seconds). We call this Z-DAG, and it achieves high-throughput across a mesh network topology presently composed of about 2,000 geographically dispersed full-nodes. Similar to Bitcoin, however, these nodes are incentivized to run full-nodes for the benefit of network security, through a bonded validator scheme. These nodes do not participate in the consensus of transactions or block validation any differently than other nodes and therefore do not degrade the security model of Bitcoin’s validate first then trust, across every node. Each token transfer settles on-chain. The protocol follows Bitcoin core policies so it has adequate code coverage and protocol hardening to be qualified as production quality software. It shares a significant portion of Bitcoin’s own hashpower through merged-mining.
This platform as a whole can serve token microtransactions, larger settlements, and store-of-value in an ideal fashion, providing probabilistic scalability whilst remaining decentralized according to Bitcoin design. It is accessible to ERC-20 via a permissionless and trust-minimized bridge that works in both directions. The bridge and token platform are currently available on the Syscoin mainnet. This has been gaining recent attention for use by loyalty point programs and stablecoins such as Binance USD.

Solutions

Syscoin Foundation identified a few paths for Reddit to leverage this infrastructure, each with trade-offs. The first provides the most cost-savings and scaling benefits at some sacrifice of token autonomy. The second offers more preservation of autonomy with a more narrow scope of cost savings than the first option, but savings even so. The third introduces more complexity than the previous two yet provides the most overall benefits. We consider the third as most viable as it enables Reddit to benefit even while retaining existing smart contract functionality. We will focus on the third option, and include the first two for good measure.
  1. Distribution, burns and user-to-user transfers of Reddit Points are entirely carried out on the Syscoin network. This full-on approach to utilizing the Syscoin network provides the most scalability and transaction cost benefits of these scenarios. The tradeoff here is distribution and subscription handling likely migrating away from smart contracts into the application layer.
  2. The Reddit Community Points ecosystem can continue to use existing smart contracts as they are used today on the Ethereum mainchain. Users migrate a portion of their tokens to Syscoin, the scaling network, to gain much lower fees, scalability, and a proven base layer, without sacrificing sovereign ownership. They would use Syscoin for user-to-user transfers. Tips redeemable in ten seconds or less, a high-throughput relay network, and onchain settlement at a block target of 60 seconds.
  3. Integration between Matic Network and Syscoin Platform - similar to Syscoin’s current integration with Ethereum - will provide Reddit Community Points with EVM scalability (including the Memberships ERC777 operator) on the Matic side, and performant simple value transfers, robust decentralized security, and sovereign store-of-value on the Syscoin side. It’s “the best of both worlds”. The trade-off is more complex interoperability.

Syscoin + Matic Integration

Matic and Blockchain Foundry Inc, the public company formed by the founders of Syscoin, recently entered a partnership for joint research and business development initiatives. This is ideal for all parties as Matic Network and Syscoin Platform provide complementary utility. Syscoin offers characteristics for sovereign ownership and security based on Bitcoin’s time-tested model, and shares a significant portion of Bitcoin’s own hashpower. Syscoin’s focus is on secure and scalable simple value transfers, trust-minimized interoperability, and opt-in regulatory compliance for tokenized assets rather than scalability for smart contract execution. On the other hand, Matic Network can provide scalable EVM for smart contract execution. Reddit Community Points can benefit from both.
Syscoin + Matic integration is actively being explored by both teams, as it is helpful to Reddit, Ethereum, and the industry as a whole.

Proving Performance & Cost Savings

Our POC focuses on 100,000 on-chain settlements of token transfers on the Syscoin Core blockchain. Transfers and burns perform equally with Syscoin. For POCs related to smart contracts (subscriptions, etc), refer to the Matic Network proposal.
On-chain settlement of 100k transactions was accomplished within roughly twelve minutes, well-exceeding Reddit’s expectation of five days. This was performed using six full-nodes operating on compute-optimized AWS c4.2xlarge instances which were geographically distributed (Virginia, London, Sao Paulo Brazil, Oregon, Singapore, Germany). A higher quantity of settlements could be reached within the same time-frame with more broadcasting nodes involved, or using hosts with more resources for faster execution of the process.
Addresses used: 100,014
The demonstration was executed using this tool. The results can be seen in the following blocks:
612722: https://sys1.bcfn.ca/block/6d47796d043bb4c508d29123e6ae81b051f5e0aaef849f253c8f3a6942a022ce
612723: https://sys1.bcfn.ca/block/8e2077f743461b90f80b4bef502f564933a8e04de97972901f3d65cfadcf1faf
612724: https://sys1.bcfn.ca/block/205436d25b1b499fce44c29567c5c807beaca915b83cc9f3c35b0d76dbb11f6e
612725: https://sys1.bcfn.ca/block/776d1b1a0f90f655a6bbdf559ff5072459cbdc5682d7615ff4b78c00babdc237
612726: https://sys1.bcfn.ca/block/de4df0994253742a1ac8ac9eec8d2a8c8b0a6d72c53d6f3caa29bb6c171b0a6b
612727: https://sys1.bcfn.ca/block/e5e167c52a9decb313fbaadf49a5e34cb490f8084f642a850385476d4ef10d70
612728: https://sys1.bcfn.ca/block/ab64d989edc71890e7b5b8491c20e9a27520dc45a5f7c776d3dae79057f59fe7
612729: https://sys1.bcfn.ca/block/5e8b7ecd0e36f99d07e4ea6e135fc952bf7ec30164ab6f4d1e98b0f2d405df6d
612730: https://sys1.bcfn.ca/block/d395df3d31dde60bbb0bece6bd5b358297da878f0beb96be389e5f0e043580a3
It is important to note that this POC is not focused on Z-DAG. The performance of Z-DAG has been benchmarked within realistic network conditions: Whiteblock’s audit is publicly available. Network latency tests showed an average TPS around 15k with burst capacity up to 61k. Zero-latency control group exhibited ~150k TPS. Mainnet testing of the Z-DAG network is achievable and will require further coordination and additional resources.
Even further optimizations are expected in the upcoming Syscoin Core release which will implement a UTXO model for our token layer bringing further efficiency as well as open the door to additional scaling technology currently under research by our team and academic partners. At present our token layer is account-based, similar to Ethereum. Opt-in compliance structures will also be introduced soon which will offer some positive performance characteristics as well. It makes the most sense to implement these optimizations before performing another benchmark for Z-DAG, especially on the mainnet considering the resources required to stress-test this network.

Cost Savings

Total cost for these 100k transactions: $0.63 USD
See the live fee comparison for savings estimation between transactions on Ethereum and Syscoin. Below is a snapshot at time of writing:
ETH price: $318.55 ETH gas price: 55.00 Gwei ($0.37)
Syscoin price: $0.11
Snapshot of live fee comparison chart
Z-DAG provides a more efficient fee-market. A typical Z-DAG transaction costs 0.0000582 SYS. Tokens can be safely redeemed/re-spent within seconds or allowed to settle on-chain beforehand. The costs should remain about this low for microtransactions.
Syscoin will achieve further reduction of fees and even greater scalability with offchain payment channels for assets, with Z-DAG as a resilience fallback. New payment channel technology is one of the topics under research by the Syscoin development team with our academic partners at TU Delft. In line with the calculation in the Lightning Networks white paper, payment channels using assets with Syscoin Core will bring theoretical capacity for each person on Earth (7.8 billion) to have five on-chain transactions per year, per person, without requiring anyone to enter a fee market (aka “wait for a block”). This exceeds the minimum LN expectation of two transactions per person, per year; one to exist on-chain and one to settle aggregated value.

Tools, Infrastructure & Documentation

Syscoin Bridge

Mainnet Demonstration of Syscoin Bridge with the Basic Attention Token ERC-20
A two-way blockchain interoperability system that uses Simple Payment Verification to enable:
  • Any Standard ERC-20 token to be moved from Ethereum to the Syscoin blockchain as a Syscoin Platform Token (SPT), and back to Ethereum
  • Any SPT to be moved from Syscoin to the Ethereum blockchain as an ERC-20 token, and back to Syscoin

Benefits

  • Permissionless
  • No counterparties involved
  • No trading mechanisms involved
  • No third-party liquidity providers required
  • Cross-chain Fractional Supply - 2-way peg - Token supply maintained globally
  • ERC-20s gain vastly improved transactionality with the Syscoin Token Platform, along with the security of bitcoin-core-compliant PoW.
  • SPTs gain access to all the tooling, applications and capabilities of Ethereum for ERC-20, including smart contracts.
https://preview.redd.it/l8t2m8ldh8e51.png?width=1180&format=png&auto=webp&s=b0a955a0181746dc79aff718bd0bf607d3c3aa23
https://preview.redd.it/26htnxzfh8e51.png?width=1180&format=png&auto=webp&s=d0383d3c2ee836c9f60b57eca35542e9545f741d

Source code

https://github.com/syscoin/?q=sysethereum
Main Subprojects

API

Tools to simplify using Syscoin Bridge as a service with dapps and wallets will be released some time after implementation of Syscoin Core 4.2. These will be based upon the same processes which are automated in the current live Sysethereum Dapp that is functioning with the Syscoin mainnet.

Documentation

Syscoin Bridge & How it Works (description and process flow)
Superblock Validation Battles
HOWTO: Provision the Bridge for your ERC-20
HOWTO: Setup an Agent
Developer & User Diligence

Trade-off

The Syscoin Ethereum Bridge is secured by Agent nodes participating in a decentralized and incentivized model that involves roles of Superblock challengers and submitters. This model is open to participation. The benefits here are trust-minimization, permissionless-ness, and potentially less legal/regulatory red-tape than interop mechanisms that involve liquidity providers and/or trading mechanisms.
The trade-off is that due to the decentralized nature there are cross-chain settlement times of one hour to cross from Ethereum to Syscoin, and three hours to cross from Syscoin to Ethereum. We are exploring ways to reduce this time while maintaining decentralization via zkp. Even so, an “instant bridge” experience could be provided by means of a third-party liquidity mechanism. That option exists but is not required for bridge functionality today. Typically bridges are used with batch value, not with high frequencies of smaller values, and generally it is advantageous to keep some value on both chains for maximum availability of utility. Even so, the cross-chain settlement time is good to mention here.

Cost

Ethereum -> Syscoin: Matic or Ethereum transaction fee for bridge contract interaction, negligible Syscoin transaction fee for minting tokens
Syscoin -> Ethereum: Negligible Syscoin transaction fee for burning tokens, 0.01% transaction fee paid to Bridge Agent in the form of the ERC-20, Matic or Ethereum transaction fee for contract interaction.

Z-DAG

Zero-Confirmation Directed Acyclic Graph is an instant settlement protocol that is used as a complementary system to proof-of-work (PoW) in the confirmation of Syscoin service transactions. In essence, a Z-DAG is simply a directed acyclic graph (DAG) where validating nodes verify the sequential ordering of transactions that are received in their memory pools. Z-DAG is used by the validating nodes across the network to ensure that there is absolute consensus on the ordering of transactions and no balances are overflowed (no double-spends).

Benefits

  • Unique fee-market that is more efficient for microtransaction redemption and settlement
  • Uses decentralized means to enable tokens with value transfer scalability that is comparable or exceeds that of credit card networks
  • Provides high throughput and secure fulfillment even if blocks are full
  • Probabilistic and interactive
  • 99.9999% security assurance within 10 seconds
  • Can serve payment channels as a resilience fallback that is faster and lower-cost than falling-back directly to a blockchain
  • Each Z-DAG transaction also settles onchain through Syscoin Core at 60-second block target using SHA-256 Proof of Work consensus
https://preview.redd.it/pgbx84jih8e51.png?width=1614&format=png&auto=webp&s=5f631d42a33dc698365eb8dd184b6d442def6640

Source code

https://github.com/syscoin/syscoin

API

Syscoin-js provides tooling for all Syscoin Core RPCs including interactivity with Z-DAG.

Documentation

Z-DAG White Paper
Useful read: An in-depth Z-DAG discussion between Syscoin Core developer Jag Sidhu and Brave Software Research Engineer Gonçalo Pestana

Trade-off

Z-DAG enables the ideal speed/security tradeoff to be determined per use-case in the application layer. It minimizes the sacrifice required to accept and redeem fast transfers/payments while providing more-than-ample security for microtransactions. This is supported on the premise that a Reddit user receiving points does need security yet generally doesn’t want nor need to wait for the same level of security as a nation-state settling an international trade debt. In any case, each Z-DAG transaction settles onchain at a block target of 60 seconds.

Syscoin Specs

Syscoin 3.0 White Paper
(4.0 white paper is pending. For improved scalability and less blockchain bloat, some features of v3 no longer exist in current v4: Specifically Marketplace Offers, Aliases, Escrow, Certificates, Pruning, Encrypted Messaging)
  • 16MB block bandwidth per minute assuming segwit witness carrying transactions, and transactions ~200 bytes on average
  • SHA256 merge mined with Bitcoin
  • UTXO asset layer, with base Syscoin layer sharing identical security policies as Bitcoin Core
  • Z-DAG on asset layer, bridge to Ethereum on asset layer
  • On-chain scaling with prospect of enabling enterprise grade reliable trustless payment processing with on/offchain hybrid solution
  • Focus only on Simple Value Transfers. MVP of blockchain consensus footprint is balances and ownership of them. Everything else can reduce data availability in exchange for scale (Ethereum 2.0 model). We leave that to other designs, we focus on transfers.
  • Future integrations of MAST/Taproot to get more complex value transfers without trading off trustlessness or decentralization.
  • Zero-knowledge Proofs are a cryptographic new frontier. We are dabbling here to generalize the concept of bridging and also verify the state of a chain efficiently. We also apply it in our Digital Identity projects at Blockchain Foundry (a publicly traded company which develops Syscoin softwares for clients). We are also looking to integrate privacy preserving payment channels for off-chain payments through zkSNARK hub & spoke design which does not suffer from the HTLC attack vectors evident on LN. Much of the issues plaguing Lightning Network can be resolved using a zkSNARK design whilst also providing the ability to do a multi-asset payment channel system. Currently we found a showstopper attack (American Call Option) on LN if we were to use multiple-assets. This would not exist in a system such as this.

Wallets

Web3 and mobile wallets are under active development by Blockchain Foundry Inc as WebAssembly applications and expected for release not long after mainnet deployment of Syscoin Core 4.2. Both of these will be multi-coin wallets that support Syscoin, SPTs, Ethereum, and ERC-20 tokens. The Web3 wallet will provide functionality similar to Metamask.
Syscoin Platform and tokens are already integrated with Blockbook. Custom hardware wallet support currently exists via ElectrumSys. First-class HW wallet integration through apps such as Ledger Live will exist after 4.2.
Current supported wallets
Syscoin Spark Desktop
Syscoin-Qt

Explorers

Mainnet: https://sys1.bcfn.ca (Blockbook)
Testnet: https://explorer-testnet.blockchainfoundry.co

Thank you for close consideration of our proposal. We look forward to feedback, and to working with the Reddit community to implement an ideal solution using Syscoin Platform!

submitted by sidhujag to ethereum [link] [comments]

Why i’m bullish on Zilliqa (long read)

Edit: TL;DR added in the comments
 
Hey all, I've been researching coins since 2017 and have gone through 100s of them in the last 3 years. I got introduced to blockchain via Bitcoin of course, analyzed Ethereum thereafter and from that moment I have a keen interest in smart contact platforms. I’m passionate about Ethereum but I find Zilliqa to have a better risk-reward ratio. Especially because Zilliqa has found an elegant balance between being secure, decentralized and scalable in my opinion.
 
Below I post my analysis of why from all the coins I went through I’m most bullish on Zilliqa (yes I went through Tezos, EOS, NEO, VeChain, Harmony, Algorand, Cardano etc.). Note that this is not investment advice and although it's a thorough analysis there is obviously some bias involved. Looking forward to what you all think!
 
Fun fact: the name Zilliqa is a play on ‘silica’ silicon dioxide which means “Silicon for the high-throughput consensus computer.”
 
This post is divided into (i) Technology, (ii) Business & Partnerships, and (iii) Marketing & Community. I’ve tried to make the technology part readable for a broad audience. If you’ve ever tried understanding the inner workings of Bitcoin and Ethereum you should be able to grasp most parts. Otherwise, just skim through and once you are zoning out head to the next part.
 
Technology and some more:
 
Introduction
 
The technology is one of the main reasons why I’m so bullish on Zilliqa. First thing you see on their website is: “Zilliqa is a high-performance, high-security blockchain platform for enterprises and next-generation applications.” These are some bold statements.
 
Before we deep dive into the technology let’s take a step back in time first as they have quite the history. The initial research paper from which Zilliqa originated dates back to August 2016: Elastico: A Secure Sharding Protocol For Open Blockchains where Loi Luu (Kyber Network) is one of the co-authors. Other ideas that led to the development of what Zilliqa has become today are: Bitcoin-NG, collective signing CoSi, ByzCoin and Omniledger.
 
The technical white paper was made public in August 2017 and since then they have achieved everything stated in the white paper and also created their own open source intermediate level smart contract language called Scilla (functional programming language similar to OCaml) too.
 
Mainnet is live since the end of January 2019 with daily transaction rates growing continuously. About a week ago mainnet reached 5 million transactions, 500.000+ addresses in total along with 2400 nodes keeping the network decentralized and secure. Circulating supply is nearing 11 billion and currently only mining rewards are left. The maximum supply is 21 billion with annual inflation being 7.13% currently and will only decrease with time.
 
Zilliqa realized early on that the usage of public cryptocurrencies and smart contracts were increasing but decentralized, secure, and scalable alternatives were lacking in the crypto space. They proposed to apply sharding onto a public smart contract blockchain where the transaction rate increases almost linear with the increase in the amount of nodes. More nodes = higher transaction throughput and increased decentralization. Sharding comes in many forms and Zilliqa uses network-, transaction- and computational sharding. Network sharding opens up the possibility of using transaction- and computational sharding on top. Zilliqa does not use state sharding for now. We’ll come back to this later.
 
Before we continue dissecting how Zilliqa achieves such from a technological standpoint it’s good to keep in mind that a blockchain being decentralised and secure and scalable is still one of the main hurdles in allowing widespread usage of decentralised networks. In my opinion this needs to be solved first before blockchains can get to the point where they can create and add large scale value. So I invite you to read the next section to grasp the underlying fundamentals. Because after all these premises need to be true otherwise there isn’t a fundamental case to be bullish on Zilliqa, right?
 
Down the rabbit hole
 
How have they achieved this? Let’s define the basics first: key players on Zilliqa are the users and the miners. A user is anybody who uses the blockchain to transfer funds or run smart contracts. Miners are the (shard) nodes in the network who run the consensus protocol and get rewarded for their service in Zillings (ZIL). The mining network is divided into several smaller networks called shards, which is also referred to as ‘network sharding’. Miners subsequently are randomly assigned to a shard by another set of miners called DS (Directory Service) nodes. The regular shards process transactions and the outputs of these shards are eventually combined by the DS shard as they reach consensus on the final state. More on how these DS shards reach consensus (via pBFT) will be explained later on.
 
The Zilliqa network produces two types of blocks: DS blocks and Tx blocks. One DS Block consists of 100 Tx Blocks. And as previously mentioned there are two types of nodes concerned with reaching consensus: shard nodes and DS nodes. Becoming a shard node or DS node is being defined by the result of a PoW cycle (Ethash) at the beginning of the DS Block. All candidate mining nodes compete with each other and run the PoW (Proof-of-Work) cycle for 60 seconds and the submissions achieving the highest difficulty will be allowed on the network. And to put it in perspective: the average difficulty for one DS node is ~ 2 Th/s equaling 2.000.000 Mh/s or 55 thousand+ GeForce GTX 1070 / 8 GB GPUs at 35.4 Mh/s. Each DS Block 10 new DS nodes are allowed. And a shard node needs to provide around 8.53 GH/s currently (around 240 GTX 1070s). Dual mining ETH/ETC and ZIL is possible and can be done via mining software such as Phoenix and Claymore. There are pools and if you have large amounts of hashing power (Ethash) available you could mine solo.
 
The PoW cycle of 60 seconds is a peak performance and acts as an entry ticket to the network. The entry ticket is called a sybil resistance mechanism and makes it incredibly hard for adversaries to spawn lots of identities and manipulate the network with these identities. And after every 100 Tx Blocks which corresponds to roughly 1,5 hour this PoW process repeats. In between these 1,5 hour, no PoW needs to be done meaning Zilliqa’s energy consumption to keep the network secure is low. For more detailed information on how mining works click here.
Okay, hats off to you. You have made it this far. Before we go any deeper down the rabbit hole we first must understand why Zilliqa goes through all of the above technicalities and understand a bit more what a blockchain on a more fundamental level is. Because the core of Zilliqa’s consensus protocol relies on the usage of pBFT (practical Byzantine Fault Tolerance) we need to know more about state machines and their function. Navigate to Viewblock, a Zilliqa block explorer, and just come back to this article. We will use this site to navigate through a few concepts.
 
We have established that Zilliqa is a public and distributed blockchain. Meaning that everyone with an internet connection can send ZILs, trigger smart contracts, etc. and there is no central authority who fully controls the network. Zilliqa and other public and distributed blockchains (like Bitcoin and Ethereum) can also be defined as state machines.
 
Taking the liberty of paraphrasing examples and definitions given by Samuel Brooks’ medium article, he describes the definition of a blockchain (like Zilliqa) as: “A peer-to-peer, append-only datastore that uses consensus to synchronize cryptographically-secure data”.
 
Next, he states that: "blockchains are fundamentally systems for managing valid state transitions”. For some more context, I recommend reading the whole medium article to get a better grasp of the definitions and understanding of state machines. Nevertheless, let’s try to simplify and compile it into a single paragraph. Take traffic lights as an example: all its states (red, amber, and green) are predefined, all possible outcomes are known and it doesn’t matter if you encounter the traffic light today or tomorrow. It will still behave the same. Managing the states of a traffic light can be done by triggering a sensor on the road or pushing a button resulting in one traffic lights’ state going from green to red (via amber) and another light from red to green.
 
With public blockchains like Zilliqa, this isn’t so straightforward and simple. It started with block #1 almost 1,5 years ago and every 45 seconds or so a new block linked to the previous block is being added. Resulting in a chain of blocks with transactions in it that everyone can verify from block #1 to the current #647.000+ block. The state is ever changing and the states it can find itself in are infinite. And while the traffic light might work together in tandem with various other traffic lights, it’s rather insignificant comparing it to a public blockchain. Because Zilliqa consists of 2400 nodes who need to work together to achieve consensus on what the latest valid state is while some of these nodes may have latency or broadcast issues, drop offline or are deliberately trying to attack the network, etc.
 
Now go back to the Viewblock page take a look at the amount of transaction, addresses, block and DS height and then hit refresh. Obviously as expected you see new incremented values on one or all parameters. And how did the Zilliqa blockchain manage to transition from a previous valid state to the latest valid state? By using pBFT to reach consensus on the latest valid state.
 
After having obtained the entry ticket, miners execute pBFT to reach consensus on the ever-changing state of the blockchain. pBFT requires a series of network communication between nodes, and as such there is no GPU involved (but CPU). Resulting in the total energy consumed to keep the blockchain secure, decentralized and scalable being low.
 
pBFT stands for practical Byzantine Fault Tolerance and is an optimization on the Byzantine Fault Tolerant algorithm. To quote Blockonomi: “In the context of distributed systems, Byzantine Fault Tolerance is the ability of a distributed computer network to function as desired and correctly reach a sufficient consensus despite malicious components (nodes) of the system failing or propagating incorrect information to other peers.” Zilliqa is such a distributed computer network and depends on the honesty of the nodes (shard and DS) to reach consensus and to continuously update the state with the latest block. If pBFT is a new term for you I can highly recommend the Blockonomi article.
 
The idea of pBFT was introduced in 1999 - one of the authors even won a Turing award for it - and it is well researched and applied in various blockchains and distributed systems nowadays. If you want more advanced information than the Blockonomi link provides click here. And if you’re in between Blockonomi and the University of Singapore read the Zilliqa Design Story Part 2 dating from October 2017.
Quoting from the Zilliqa tech whitepaper: “pBFT relies upon a correct leader (which is randomly selected) to begin each phase and proceed when the sufficient majority exists. In case the leader is byzantine it can stall the entire consensus protocol. To address this challenge, pBFT offers a view change protocol to replace the byzantine leader with another one.”
 
pBFT can tolerate ⅓ of the nodes being dishonest (offline counts as Byzantine = dishonest) and the consensus protocol will function without stalling or hiccups. Once there are more than ⅓ of dishonest nodes but no more than ⅔ the network will be stalled and a view change will be triggered to elect a new DS leader. Only when more than ⅔ of the nodes are dishonest (66%) double-spend attacks become possible.
 
If the network stalls no transactions can be processed and one has to wait until a new honest leader has been elected. When the mainnet was just launched and in its early phases, view changes happened regularly. As of today the last stalling of the network - and view change being triggered - was at the end of October 2019.
 
Another benefit of using pBFT for consensus besides low energy is the immediate finality it provides. Once your transaction is included in a block and the block is added to the chain it’s done. Lastly, take a look at this article where three types of finality are being defined: probabilistic, absolute and economic finality. Zilliqa falls under the absolute finality (just like Tendermint for example). Although lengthy already we skipped through some of the inner workings from Zilliqa’s consensus: read the Zilliqa Design Story Part 3 and you will be close to having a complete picture on it. Enough about PoW, sybil resistance mechanism, pBFT, etc. Another thing we haven’t looked at yet is the amount of decentralization.
 
Decentralisation
 
Currently, there are four shards, each one of them consisting of 600 nodes. 1 shard with 600 so-called DS nodes (Directory Service - they need to achieve a higher difficulty than shard nodes) and 1800 shard nodes of which 250 are shard guards (centralized nodes controlled by the team). The amount of shard guards has been steadily declining from 1200 in January 2019 to 250 as of May 2020. On the Viewblock statistics, you can see that many of the nodes are being located in the US but those are only the (CPU parts of the) shard nodes who perform pBFT. There is no data from where the PoW sources are coming. And when the Zilliqa blockchain starts reaching its transaction capacity limit, a network upgrade needs to be executed to lift the current cap of maximum 2400 nodes to allow more nodes and formation of more shards which will allow to network to keep on scaling according to demand.
Besides shard nodes there are also seed nodes. The main role of seed nodes is to serve as direct access points (for end-users and clients) to the core Zilliqa network that validates transactions. Seed nodes consolidate transaction requests and forward these to the lookup nodes (another type of nodes) for distribution to the shards in the network. Seed nodes also maintain the entire transaction history and the global state of the blockchain which is needed to provide services such as block explorers. Seed nodes in the Zilliqa network are comparable to Infura on Ethereum.
 
The seed nodes were first only operated by Zilliqa themselves, exchanges and Viewblock. Operators of seed nodes like exchanges had no incentive to open them for the greater public. They were centralised at first. Decentralisation at the seed nodes level has been steadily rolled out since March 2020 ( Zilliqa Improvement Proposal 3 ). Currently the amount of seed nodes is being increased, they are public-facing and at the same time PoS is applied to incentivize seed node operators and make it possible for ZIL holders to stake and earn passive yields. Important distinction: seed nodes are not involved with consensus! That is still PoW as entry ticket and pBFT for the actual consensus.
 
5% of the block rewards are being assigned to seed nodes (from the beginning in 2019) and those are being used to pay out ZIL stakers. The 5% block rewards with an annual yield of 10.03% translate to roughly 610 MM ZILs in total that can be staked. Exchanges use the custodial variant of staking and wallets like Moonlet will use the non-custodial version (starting in Q3 2020). Staking is being done by sending ZILs to a smart contract created by Zilliqa and audited by Quantstamp.
 
With a high amount of DS; shard nodes and seed nodes becoming more decentralized too, Zilliqa qualifies for the label of decentralized in my opinion.
 
Smart contracts
 
Let me start by saying I’m not a developer and my programming skills are quite limited. So I‘m taking the ELI5 route (maybe 12) but if you are familiar with Javascript, Solidity or specifically OCaml please head straight to Scilla - read the docs to get a good initial grasp of how Zilliqa’s smart contract language Scilla works and if you ask yourself “why another programming language?” check this article. And if you want to play around with some sample contracts in an IDE click here. The faucet can be found here. And more information on architecture, dapp development and API can be found on the Developer Portal.
If you are more into listening and watching: check this recent webinar explaining Zilliqa and Scilla. Link is time-stamped so you’ll start right away with a platform introduction, roadmap 2020 and afterwards a proper Scilla introduction.
 
Generalized: programming languages can be divided into being ‘object-oriented’ or ‘functional’. Here is an ELI5 given by software development academy: * “all programs have two basic components, data – what the program knows – and behavior – what the program can do with that data. So object-oriented programming states that combining data and related behaviors in one place, is called “object”, which makes it easier to understand how a particular program works. On the other hand, functional programming argues that data and behavior are different things and should be separated to ensure their clarity.” *
 
Scilla is on the functional side and shares similarities with OCaml: OCaml is a general-purpose programming language with an emphasis on expressiveness and safety. It has an advanced type system that helps catch your mistakes without getting in your way. It's used in environments where a single mistake can cost millions and speed matters, is supported by an active community, and has a rich set of libraries and development tools. For all its power, OCaml is also pretty simple, which is one reason it's often used as a teaching language.
 
Scilla is blockchain agnostic, can be implemented onto other blockchains as well, is recognized by academics and won a so-called Distinguished Artifact Award award at the end of last year.
 
One of the reasons why the Zilliqa team decided to create their own programming language focused on preventing smart contract vulnerabilities is that adding logic on a blockchain, programming, means that you cannot afford to make mistakes. Otherwise, it could cost you. It’s all great and fun blockchains being immutable but updating your code because you found a bug isn’t the same as with a regular web application for example. And with smart contracts, it inherently involves cryptocurrencies in some form thus value.
 
Another difference with programming languages on a blockchain is gas. Every transaction you do on a smart contract platform like Zilliqa or Ethereum costs gas. With gas you basically pay for computational costs. Sending a ZIL from address A to address B costs 0.001 ZIL currently. Smart contracts are more complex, often involve various functions and require more gas (if gas is a new concept click here ).
 
So with Scilla, similar to Solidity, you need to make sure that “every function in your smart contract will run as expected without hitting gas limits. An improper resource analysis may lead to situations where funds may get stuck simply because a part of the smart contract code cannot be executed due to gas limits. Such constraints are not present in traditional software systems”. Scilla design story part 1
 
Some examples of smart contract issues you’d want to avoid are: leaking funds, ‘unexpected changes to critical state variables’ (example: someone other than you setting his or her address as the owner of the smart contract after creation) or simply killing a contract.
 
Scilla also allows for formal verification. Wikipedia to the rescue: In the context of hardware and software systems, formal verification is the act of proving or disproving the correctness of intended algorithms underlying a system with respect to a certain formal specification or property, using formal methods of mathematics.
 
Formal verification can be helpful in proving the correctness of systems such as: cryptographic protocols, combinational circuits, digital circuits with internal memory, and software expressed as source code.
 
Scilla is being developed hand-in-hand with formalization of its semantics and its embedding into the Coq proof assistant — a state-of-the art tool for mechanized proofs about properties of programs.”
 
Simply put, with Scilla and accompanying tooling developers can be mathematically sure and proof that the smart contract they’ve written does what he or she intends it to do.
 
Smart contract on a sharded environment and state sharding
 
There is one more topic I’d like to touch on: smart contract execution in a sharded environment (and what is the effect of state sharding). This is a complex topic. I’m not able to explain it any easier than what is posted here. But I will try to compress the post into something easy to digest.
 
Earlier on we have established that Zilliqa can process transactions in parallel due to network sharding. This is where the linear scalability comes from. We can define simple transactions: a transaction from address A to B (Category 1), a transaction where a user interacts with one smart contract (Category 2) and the most complex ones where triggering a transaction results in multiple smart contracts being involved (Category 3). The shards are able to process transactions on their own without interference of the other shards. With Category 1 transactions that is doable, with Category 2 transactions sometimes if that address is in the same shard as the smart contract but with Category 3 you definitely need communication between the shards. Solving that requires to make a set of communication rules the protocol needs to follow in order to process all transactions in a generalised fashion.
 
And this is where the downsides of state sharding comes in currently. All shards in Zilliqa have access to the complete state. Yes the state size (0.1 GB at the moment) grows and all of the nodes need to store it but it also means that they don’t need to shop around for information available on other shards. Requiring more communication and adding more complexity. Computer science knowledge and/or developer knowledge required links if you want to dig further: Scilla - language grammar Scilla - Foundations for Verifiable Decentralised Computations on a Blockchain Gas Accounting NUS x Zilliqa: Smart contract language workshop
 
Easier to follow links on programming Scilla https://learnscilla.com/home Ivan on Tech
 
Roadmap / Zilliqa 2.0
 
There is no strict defined roadmap but here are topics being worked on. And via the Zilliqa website there is also more information on the projects they are working on.
 
Business & Partnerships
 
It’s not only technology in which Zilliqa seems to be excelling as their ecosystem has been expanding and starting to grow rapidly. The project is on a mission to provide OpenFinance (OpFi) to the world and Singapore is the right place to be due to its progressive regulations and futuristic thinking. Singapore has taken a proactive approach towards cryptocurrencies by introducing the Payment Services Act 2019 (PS Act). Among other things, the PS Act will regulate intermediaries dealing with certain cryptocurrencies, with a particular focus on consumer protection and anti-money laundering. It will also provide a stable regulatory licensing and operating framework for cryptocurrency entities, effectively covering all crypto businesses and exchanges based in Singapore. According to PWC 82% of the surveyed executives in Singapore reported blockchain initiatives underway and 13% of them have already brought the initiatives live to the market. There is also an increasing list of organizations that are starting to provide digital payment services. Moreover, Singaporean blockchain developers Building Cities Beyond has recently created an innovation $15 million grant to encourage development on its ecosystem. This all suggests that Singapore tries to position itself as (one of) the leading blockchain hubs in the world.
 
Zilliqa seems to already take advantage of this and recently helped launch Hg Exchange on their platform, together with financial institutions PhillipCapital, PrimePartners and Fundnel. Hg Exchange, which is now approved by the Monetary Authority of Singapore (MAS), uses smart contracts to represent digital assets. Through Hg Exchange financial institutions worldwide can use Zilliqa's safe-by-design smart contracts to enable the trading of private equities. For example, think of companies such as Grab, Airbnb, SpaceX that are not available for public trading right now. Hg Exchange will allow investors to buy shares of private companies & unicorns and capture their value before an IPO. Anquan, the main company behind Zilliqa, has also recently announced that they became a partner and shareholder in TEN31 Bank, which is a fully regulated bank allowing for tokenization of assets and is aiming to bridge the gap between conventional banking and the blockchain world. If STOs, the tokenization of assets, and equity trading will continue to increase, then Zilliqa’s public blockchain would be the ideal candidate due to its strategic positioning, partnerships, regulatory compliance and the technology that is being built on top of it.
 
What is also very encouraging is their focus on banking the un(der)banked. They are launching a stablecoin basket starting with XSGD. As many of you know, stablecoins are currently mostly used for trading. However, Zilliqa is actively trying to broaden the use case of stablecoins. I recommend everybody to read this text that Amrit Kumar wrote (one of the co-founders). These stablecoins will be integrated in the traditional markets and bridge the gap between the crypto world and the traditional world. This could potentially revolutionize and legitimise the crypto space if retailers and companies will for example start to use stablecoins for payments or remittances, instead of it solely being used for trading.
 
Zilliqa also released their DeFi strategic roadmap (dating November 2019) which seems to be aligning well with their OpFi strategy. A non-custodial DEX is coming to Zilliqa made by Switcheo which allows cross-chain trading (atomic swaps) between ETH, EOS and ZIL based tokens. They also signed a Memorandum of Understanding for a (soon to be announced) USD stablecoin. And as Zilliqa is all about regulations and being compliant, I’m speculating on it to be a regulated USD stablecoin. Furthermore, XSGD is already created and visible on block explorer and XIDR (Indonesian Stablecoin) is also coming soon via StraitsX. Here also an overview of the Tech Stack for Financial Applications from September 2019. Further quoting Amrit Kumar on this:
 
There are two basic building blocks in DeFi/OpFi though: 1) stablecoins as you need a non-volatile currency to get access to this market and 2) a dex to be able to trade all these financial assets. The rest are built on top of these blocks.
 
So far, together with our partners and community, we have worked on developing these building blocks with XSGD as a stablecoin. We are working on bringing a USD-backed stablecoin as well. We will soon have a decentralised exchange developed by Switcheo. And with HGX going live, we are also venturing into the tokenization space. More to come in the future.”
 
Additionally, they also have this ZILHive initiative that injects capital into projects. There have been already 6 waves of various teams working on infrastructure, innovation and research, and they are not from ASEAN or Singapore only but global: see Grantees breakdown by country. Over 60 project teams from over 20 countries have contributed to Zilliqa's ecosystem. This includes individuals and teams developing wallets, explorers, developer toolkits, smart contract testing frameworks, dapps, etc. As some of you may know, Unstoppable Domains (UD) blew up when they launched on Zilliqa. UD aims to replace cryptocurrency addresses with a human-readable name and allows for uncensorable websites. Zilliqa will probably be the only one able to handle all these transactions onchain due to ability to scale and its resulting low fees which is why the UD team launched this on Zilliqa in the first place. Furthermore, Zilliqa also has a strong emphasis on security, compliance, and privacy, which is why they partnered with companies like Elliptic, ChainSecurity (part of PwC Switzerland), and Incognito. Their sister company Aqilliz (Zilliqa spelled backwards) focuses on revolutionizing the digital advertising space and is doing interesting things like using Zilliqa to track outdoor digital ads with companies like Foodpanda.
 
Zilliqa is listed on nearly all major exchanges, having several different fiat-gateways and recently have been added to Binance’s margin trading and futures trading with really good volume. They also have a very impressive team with good credentials and experience. They don't just have “tech people”. They have a mix of tech people, business people, marketeers, scientists, and more. Naturally, it's good to have a mix of people with different skill sets if you work in the crypto space.
 
Marketing & Community
 
Zilliqa has a very strong community. If you just follow their Twitter their engagement is much higher for a coin that has approximately 80k followers. They also have been ‘coin of the day’ by LunarCrush many times. LunarCrush tracks real-time cryptocurrency value and social data. According to their data, it seems Zilliqa has a more fundamental and deeper understanding of marketing and community engagement than almost all other coins. While almost all coins have been a bit frozen in the last months, Zilliqa seems to be on its own bull run. It was somewhere in the 100s a few months ago and is currently ranked #46 on CoinGecko. Their official Telegram also has over 20k people and is very active, and their community channel which is over 7k now is more active and larger than many other official channels. Their local communities also seem to be growing.
 
Moreover, their community started ‘Zillacracy’ together with the Zilliqa core team ( see www.zillacracy.com ). It’s a community-run initiative where people from all over the world are now helping with marketing and development on Zilliqa. Since its launch in February 2020 they have been doing a lot and will also run their own non-custodial seed node for staking. This seed node will also allow them to start generating revenue for them to become a self sustaining entity that could potentially scale up to become a decentralized company working in parallel with the Zilliqa core team. Comparing it to all the other smart contract platforms (e.g. Cardano, EOS, Tezos etc.) they don't seem to have started a similar initiative (correct me if I’m wrong though). This suggests in my opinion that these other smart contract platforms do not fully understand how to utilize the ‘power of the community’. This is something you cannot ‘buy with money’ and gives many projects in the space a disadvantage.
 
Zilliqa also released two social products called SocialPay and Zeeves. SocialPay allows users to earn ZILs while tweeting with a specific hashtag. They have recently used it in partnership with the Singapore Red Cross for a marketing campaign after their initial pilot program. It seems like a very valuable social product with a good use case. I can see a lot of traditional companies entering the space through this product, which they seem to suggest will happen. Tokenizing hashtags with smart contracts to get network effect is a very smart and innovative idea.
 
Regarding Zeeves, this is a tipping bot for Telegram. They already have 1000s of signups and they plan to keep upgrading it for more and more people to use it (e.g. they recently have added a quiz features). They also use it during AMAs to reward people in real-time. It’s a very smart approach to grow their communities and get familiar with ZIL. I can see this becoming very big on Telegram. This tool suggests, again, that the Zilliqa team has a deeper understanding of what the crypto space and community needs and is good at finding the right innovative tools to grow and scale.
 
To be honest, I haven’t covered everything (i’m also reaching the character limited haha). So many updates happening lately that it's hard to keep up, such as the International Monetary Fund mentioning Zilliqa in their report, custodial and non-custodial Staking, Binance Margin, Futures, Widget, entering the Indian market, and more. The Head of Marketing Colin Miles has also released this as an overview of what is coming next. And last but not least, Vitalik Buterin has been mentioning Zilliqa lately acknowledging Zilliqa and mentioning that both projects have a lot of room to grow. There is much more info of course and a good part of it has been served to you on a silver platter. I invite you to continue researching by yourself :-) And if you have any comments or questions please post here!
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Bitcoin Whitepaper The Bitcoin Whitepaper (by Satoshi Nakomoto) (Audiobook) The Original Bitcoin White Paper by Satoshi ... Bitcoin Whitepaper Review - A Deep Dive The Bitcoin White Paper (By Satoshi Nakamoto)

Bitcoin Private, a supposed “fork-merge” of itcoin and Zclassic, is intended to add privacy and spendability to the Bitcoin blockchain while remaining cognizant of the challenges, choices, and failures of prior forks. To accomplish this, Bitcoin Private will use a larger block size (2 MB), a shorter block time (2.5 min), and an ASIC-resistant (GPU-friendly) proof-of-work (PoW) algorithm ... What is the Bitcoin white paper and what is it all about? Some say it’s a “must read” for getting into the crypto space, however it can be difficult to decipher if you’re new to the industry. In this article, we unpack the key points of the white paper and get you ready for your journey into the crypto world. The Backstory . Released on October 31st 2008, Satoshi Nakamoto’s white ... what Bitcoin couldn’t do, given its ability to subsume nearly all vital crypto asset functions. Which is when we came up with the idea of “ultra-Bitcoin scarcity”; i.e., a coin with all of Bitcoin’s best features, and a lifetime cap of just 2.1 million, or one-tenth of Bit-coin’s; of which, roughly half would trade upon launch, with the Bitcoin: Ein elektronisches Peer­to­Peer­Bezahlsystem Satoshi Nakamoto [email protected] www.bitcoin.org übersetzt durch Bitcoin.de Überblick. Eine reine Peer-to-Peer-Version eines elektronischen Zahlungsverfahrens würde es ermöglichen, dass Online-Zahlungen von einer Partei direkt an eine andere gesendet werden, ohne über ein Finanzinstitut zu gehen. Digitale Signaturen bilden einen ... Bitcoin is called virtual currency, but a better term is cryptocurrency. Unlike physical money, there are no coins or paper money officially produced. No government entity decides how much and when to release it into the world. Bitcoins are created digitally by people as they solve complex math problems with their computers. In many senses, it is truly decentralized. One of the interesting ...

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Bitcoin Whitepaper

Jocko Podcast 234: How to WIN Using Your Mind Rather Than Brute Force. Counter-Insurgency. FM 3-24 - Duration: 2:22:51. Jocko Podcast Recommended for you. New 10 years to the day after the Bitcoin Genesis Block, here is an audio version of the whitepaper that started it all. On screen are my bullet point summaries of each chapter of the whitepaper. If you'd like to read the Bitcoin Whitepaper yourself, go to: https://bitcoin.org/bitcoin.pdf Subscribe to the channel and follow us on Twitter and Facebook ... Donations greatly appreciated! Bitcoin: 1KdkeDArSd5LVaLVh9WePaHqB9yHLaKPfv I worked very hard to create this interactive audiobook format and graciously appr... The #Bitcoin White Paper (By Satoshi Nakamoto) Narrated by The #Cryptocurrency Portal on Friday May 31st, 2019 #Bitcoin: A Peer-to-Peer Electronic Cash System For those that are better audio ...

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