Existing in response to contract censorship on sister chain Ethereum™ (ETH) and to uphold and preserve the principle of Code is Law, Ethereum Classic (ETC) has proven its ability to resist censorship against all odds, and deliver the original Ethereum vision of unstoppable applications.
By combining the technology of Ethereum™ (ETH) with the philosophy of Bitcoin (BTC), Ethereum Classic (ETC) is uniquely positioned to be the base layer smart contracts platform of the future, as other chains become compromised or captured by special interests.
Welcome, and please be invited to discover the past, present, and future of Ethereum Classic; its principles, value proposition, community, and more - to understand why Classic.Why Classic?Latest VideosAll VideosETC Development Call - Spiral Network UpgradeEthereum Classic Community CallsDec 4, 2023POW Summit - Day 1ETC CooperativeSep 27, 2023POW Summit - Day 2ETC CooperativeSep 28, 2023Latest ApplicationsAll AppsSafeClassicMax ClassicSafeClassic Community NFTMax ClassicMonoNFTMono Money Pty LtdHebeSwap OracleHebeBlockNaboxNaboxSwapBoxNaboxNerveNetworkNerveNetworkETCFROGBTricky MickETCMC DAO MEMBERSHIPSeth Mccormackin Argentum VeritasIn Argentum VeritasTurbineSwapRohit Kumar GuptaghostNFTGHOSTEnglishEnglish中文اَلْعَرَبِيَّةُDeutschEspañolΕλληνικάFrançaisעִבְרִיתहिन्दीHrvatskiItaliano日本語한국어MalayNederlandsPortuguêsрусскийภาษาไทยTürkTiếng Việt粵語Add ETC to MetaMaskThe ETC community is active on DiscordDiscordDiscordETC Coop DiscordETC Coop Discordeth_classic Twittereth_classic TwitterETC_Network TwitterETC_Network TwitterGithubGithubETC Labs GithubETC Labs GithubRedditRedditThis site is powered by NetlifyLocalization with CrowdinLearnFAQsWhy Classic?KnowledgeVideosPlayServicesCommunityNetworkMiningDevelopmentExtraNewsBlogAboutRSS FeedSitemapMade with <3 for the Original Ethereum VisionThe content on this website is user-generated and solely for informational purposes. Do not interpret any content as an endorsement of any product or service. There's "no official anything" in Ethereum Classic. Always do your own research, and remember: don't trust, verify!
为了应对姐妹链Ethereum™ (ETH)上的合同审查,并坚持和维护代码即法律的原则,Ethereum Classic (ETC)已经证明它有能力抵制审查,克服一切困难,并提供原始Ethereum愿景的不可阻挡的应用。
通过结合以太坊™(ETH)的技术和比特币(BTC)的理念,以太坊经典(ETC)处于独特的地位,成为未来的基础层智能合约平台,因为其他链变得妥协或被特殊利益所捕获。
欢迎你,并请你发现Ethereum Classic的过去、现在和未来;它的原则、价值主张、社区等等--了解为什么是Classic。为什么是经典?最新视频所有视频实测现阶段挖以太经典ETC收益分享!以太坊2 0升级之后(POW转POS)还能挖矿吗?(以太坊可能硬分叉出ETHW,可以用显卡挖矿)币圈小林子2022年8月16日ETC 以太坊經典還能再暴漲? I 以太坊合并在即,ETC將被炒作? I 什麼是以太坊經典 (ETC)? I ETC 的價值何在? I 以太坊礦工轉向 ETC能否接得住?Fi Cat飛貓理財2022年8月11日以太坊可能再次分叉?对矿工意味着什么?王坦克2022年8月2日最新应用所有应用程序SafeClassicMax ClassicSafeClassic Community NFTMax ClassicMonoNFTMono Money Pty LtdHebeSwap OracleHebeBlockNaboxNaboxSwapBoxNaboxNerveNetworkNerveNetworkETCFROGBTricky MickETCMC DAO MEMBERSHIPSeth Mccormackin Argentum VeritasIn Argentum VeritasTurbineSwapRohit Kumar GuptaghostNFTGHOST中文English中文اَلْعَرَبِيَّةُDeutschEspañolΕλληνικάFrançaisעִבְרִיתहिन्दीHrvatskiItaliano日本語한국어MalayNederlandsPortuguêsрусскийภาษาไทยTürkTiếng Việt粵語添加ETC到MetaMaskETC社区在Discord上很活跃纪元纪元ETC合作论坛ETC合作论坛eth_classic 推特eth_classic 推特ETC_网络推特ETC_网络推特GithubGithubETC实验室GithubETC实验室Github睿迪特(Reddit)公司睿迪特(Reddit)公司本网站由Netlify提供技术支持使用 Crowdin 进行本地化了解常见问题为什么是经典?知识视频播放服务社区网络矿业开发者额外的新闻博客关于RSS订阅网站地图用<3制作的原始以太坊愿景本网站的内容由用户生成,仅供参考。请勿将任何内容理解为对任何产品或服务的认可。以太坊经典中 "没有任何官方的东西"。请务必自行研究,并记住:不要轻信,请核实!
我应该使用哪个钱包?
下面的建议并不是认可,只是为了帮助新用户快速找到一个可能适合他们的选项。
如果你想要一个简单的移动应用程序,Trust Wallet很容易使用,并支持包括ETC在内的许多货币。
如果你想持有少量ETC用于去中心化的应用程序,那么可以试试 MetaMask,并将其连接到Ethereum Classic。
如果你为你的业务接受ETC,你可能只想创建一个 exchange账户,你可以用它来出售你的本地货币。
如果你持有较大的金额,强烈建议你购买一个硬件钱包。
对于更高级的使用情况,请自己研究并尝试以下几个选项。
网络钱包这些Web3钱包可以使用一个网页来访问。它们不应该被用来保证大量的资金,但允许你轻松地与ETC互动,而不需要下载。Coin WalletMyCryptoMyEtherWalletPortis浏览器集成钱包这些Web3钱包被集成在网络浏览器中。通常情况下,它们向网站注入你的账户信息,以便让你在浏览器中与Ethereum Classic dapps无缝互动。BraveMathWalletMetaMaskNifty WalletOperaSimpleHold WalletTokenPocket硬件钱包硬件钱包是为长期存储而设计的安全钱包。BitskiCoolBitXEllipalHTC ExodusKeyPalLedgerParity SignerSafePalSignatory ClientTrezor软件钱包软件钱包是为短期存储而设计的桌面或移动设备。ABRAAlpha WalletAtomic WalletBTCPOPButton WalletCoboCoin WalletCoinomiEdgeEmerald WalletEthoseToro WalletExodusGuardaHebe CoreHuobi WalletMathWalletMidas ProtocolMixin MessengerNow WalletOwnbitPlisio WalletTokenPocketTrust WalletTrustee WalletZelcore WalletZenGo其他钱包产品这些产品是对加密货币钱包的补充,如恢复种子存储。BillFodlBlockplateColdTiCrypto Key StackCryptoSteelCRYPTOTAGHodlinoxSteely如果您想通过添加或更正本页面的信息来做出贡献,请在 Discord上留言,或在 GitHub上创建一个问题。本页的存在部分归功于以下贡献者。AndrewGuardaantsankovarviccobobsummerwillchendatony31conqerordanSSHdax-classixgitr0n1nHebeBlockIstoraMandiriProphetDanielpyskellTheCrowbillTheEnthusiasticAsericfishJamyyeContents网络钱包浏览器集成钱包硬件钱包软件钱包其他钱包产品中文English中文اَلْعَرَبِيَّةُDeutschEspañolΕλληνικάFrançaisעִבְרִיתहिन्दीHrvatskiItaliano日本語한국어MalayNederlandsPortuguêsрусскийภาษาไทยTürkTiếng Việt粵語添加ETC到MetaMaskETC社区在Discord上很活跃纪元纪元ETC合作论坛ETC合作论坛eth_classic 推特eth_classic 推特ETC_网络推特ETC_网络推特GithubGithubETC实验室GithubETC实验室Github睿迪特(Reddit)公司睿迪特(Reddit)公司本网站由Netlify提供技术支持使用 Crowdin 进行本地化了解常见问题为什么是经典?知识视频播放服务社区网络矿业开发者额外的新闻博客关于RSS订阅网站地图用<3制作的原始以太坊愿景本网站的内容由用户生成,仅供参考。请勿将任何内容理解为对任何产品或服务的认可。以太坊经典中 "没有任何官方的东西"。请务必自行研究,并记住:不要轻信,请核实!
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Ethereum Classic
Keep the original censorship-resistant Ethereum going!
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README.md
Description
This repository houses all the essential assets and documents related to the Ethereum Classic community. The purpose of this repository is to maintain transparency, foster open collaboration, and serve as a central hub for the entire community. The main components of this repository include the Ethereum Classic website, Ethereum Classic Improvement Proposals (ECIPs), and Community Call planning.
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Website
The repository contains all the assets and source code used for the Ethereum Classic website. This includes HTML, CSS, JavaScript files, images, fonts, and other relevant assets.
ECIPs
Ethereum Classic Improvement Proposals (ECIPs) are design documents providing information to the Ethereum Classic community, or describing a new feature for Ethereum Classic or its processes or environment. This section contains all the ECIPs that have been proposed, those under discussion, and those already implemented.
Community Calls
The Community Calls section includes the planning and minutes of all Ethereum Classic Community Calls. These Community Calls are a critical part of the Ethereum Classic decision-making process, where various proposals are discussed, updates are given, and community members have a chance to voice their opinions.
Contribution Guidelines
We welcome all contributions! Before contributing, please read our CONTRIBUTING.md files in the repos. It provides detailed instructions on how to contribute to each part of the repository. Make sure to also check out our CODE_OF_CONDUCT.md to ensure your contributions align with the community values.
Community Discord
For any queries or discussions, please join us in the community discord! We are excited to see how this repository grows with your contributions!
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Ethereum Classic - Wikipedia
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1Milestones
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1.1Frontier
1.2The DAO bailout
1.2.1Security vulnerabilities disclosed
1.2.2Carbon vote
1.2.3Block 1,920,000
1.3Defuse Difficulty Bomb
1.4Protocol parity
1.5Mining algorithm
2Characteristics
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2.1Ether
2.2Addresses
2.3Monetary policy
2.4Ethereum Classic Improvement Proposal
3Code is law
4Attacks
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4.1The DAO fork replay attacks
4.2RHG sells stolen ETC
4.3Classic Ether Wallet website attack
4.451% double spend attacks
5References
6External links
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From Wikipedia, the free encyclopedia
Blockchain computing platform
Ethereum ClassicEthereum ClassicOriginal author(s)Vitalik Buterin, Gavin WoodDeveloper(s)Open-source software developmentInitial release30 July 2015; 8 years ago (2015-07-30)Stable releaseSpiral / 4 February 2024; 36 days ago (2024-02-04)Development statusActiveSoftware usedEVM 61 bytecodeFundingOpen Source SoftwareWritten inC++, Go, Python, Rust, ScalaOperating systemCross-platformPlatformx86-64, ARMSizeArchive: 771GB / Snap Sync: 72GB (2023-Oct-03)Available inGlobalTypeOpen Source SoftwareLicenseOpen-source licensesAs ofOctober 2023Average performance13.3 SecondsActive users45,281 Daily TransactionsTotal users100,256,926 AddressesTotal hosts693 NodesWebsiteethereumclassic.org
Ethereum Classic is a blockchain-based distributed computing platform that offers smart contract (scripting) functionality.[1] It is open source and supports a modified version of Nakamoto consensus via transaction-based state transitions executed on a public Ethereum Virtual Machine (EVM).
Ethereum Classic maintains the original, unaltered history of the Ethereum network.[2] The Ethereum project's mainnet was initially released via Frontier on 30 July 2015. However, due to a hack of a third-party project, The DAO, the Ethereum Foundation created a new version of the Ethereum mainnet on 20 July 2016 with an irregular state change implemented that erased the DAO theft from the Ethereum blockchain history.[2] The Ethereum Foundation applied their trademark to the new, altered version of the Ethereum blockchain.[2] The older, unaltered version of Ethereum was renamed and continued on as Ethereum Classic.[2]
Ethereum Classic's native Ether token is a cryptocurrency traded on digital currency exchanges under the currency code ETC.[3] Ether is created as a reward to network nodes for a process known as "mining", which validates computations performed on Ethereum Classic's EVM. Implemented on 11 December 2017, the current ETC monetary policy seeks the same goals as bitcoin: being mechanical, algorithmic, and capped. ETC can be exchanged for network transaction fees or other assets, commodities, currencies, products, and services.
Ethereum Classic provides a decentralized Turing-complete virtual machine, the Ethereum Virtual Machine (EVM), which can execute scripts using an international network of public nodes. The virtual machine's instruction set is Turing-complete, in contrast to others like Bitcoin Script. Gas, an internal transaction pricing mechanism, is used to mitigate spam and allocate resources on the network.[4]
Milestones[edit]
Frontier[edit]
Several codenamed prototypes of the Ethereum platform were developed by the Ethereum Foundation, as part of their proof-of-concept series, prior to the official launch of the Frontier network. Ethereum Classic followed this codebase after the DAO incident.
Date
Block
Milestone name
2015-07-30
0
Frontier
2015-07-30
1
5M20 Era 1
2015-09-08
200,000
Ice Age
2016-03-15
1,150,000
Homestead
2016-10-24
2,500,000
Gas Reprice
2017-01-13
3,000,000
Die Hard
2017-12-11
5,000,000
Gotham
2017-12-11
5,000,001
5M20 Era 2
2018-05-29
5,900,000
Defuse Difficulty Bomb
2019-09-12
8,772,000
Atlantis
2020-01-11
9,573,000
Agharta
2020-03-17
10,000,001
5M20 Era 3
2020-06-01
10,500,839
Phoenix
2020-11-28
11,700,000
Thanos
2021-07-23
13,189,133
Magneto
2022-02-12
14,525,000
Mystique
2022-04-25
15,000,001
5M20 Era 4
2024-02-04
19,250,000
Spiral
TBD
20,000,001
5M20 Era 5
The DAO bailout[edit]
Main article: The DAO (organization)
On 20 July 2016, as a result of the exploitation of a flaw in The DAO project's smart contract software, and subsequent theft of $50 million worth of Ether,[5] the Ethereum network split into two separate blockchains – the altered history was named Ethereum (ETH) and the unaltered history was named Ethereum Classic (ETC).[2]
The new chain with the altered history was branded as Ethereum (code: ETH) with the BIP-44 Coin Index 60 and EVM Chain ID 1 attributed to it by the trademark-owning Ethereum Foundation. On this new chain, the history of the theft was erased from the Ethereum blockchain.[6]
Some members of the Ethereum community ignored the change and continued to participate on the original Ethereum network. The non-fork chain with an unaltered history continued on as Ethereum Classic (code: ETC) with the BIP-44 Coin Index 61 and EVM Chain ID 61.[2]
Security vulnerabilities disclosed[edit]
On 28 May 2016, a paper was released detailing security vulnerabilities with the DAO that could allow Ether to be stolen.[7] On 9 June 2016, Peter Vessenes publicly disclosed the existence of a critical security vulnerability overlooked in many Solidity contracts, a recursive call bug. On 12 June 2016, Stephan Tual publicly claimed that the DAO funds were safe despite the newly-discovered critical security flaw.
Carbon vote[edit]
On 15 July 2016, a short notice on-chain vote was held on the DAO hard fork.[8] Of the 82,054,716 ETH in existence, only 4,542,416 voted, for a total voter turn out of 5.5% of the total supply on 16 July 2016; 3,964,516 ETH (87%) voted in favor, 1/4 of which came from a single address, and 577,899 ETH (13%) opposed the DAO fork.[8] The expedited process of the carbon vote drew criticism from opponents of the DAO fork. Proponents of the fork were quick to market the vote as an effective consensus mechanism, pushing forward with the DAO fork four days later.[9]
Block 1,920,000[edit]
The first Ethereum Classic block that was not included in the forked Ethereum chain was block number 1,920,000, which was generated by Ethereum Classic miners on 20 July 2016.[8][10]
Defuse Difficulty Bomb[edit]
A mechanism called the "Difficulty Bomb" was designed to push the Ethereum chain from proof-of-work consensus mechanism to proof-of-stake in the future by exponentially increasing the difficulty of mining. This Difficulty Bomb was added to the network on block 200,000 in an upgrade named "Ice Age". While Ethereum Classic participants debated the merits of the Difficulty Bomb, a network upgrade called "Die Hard" at block 3,000,000 delayed the effects of the mechanism. Once the network participants came to consensus on the issue, Ethereum Classic upgraded its network on block 5,900,000 to permanently defuse the Difficulty Bomb. This abandoned a future with proof-of-stake and committed the network to the proof-of-work consensus mechanism.
Protocol parity[edit]
In an attempt to modernize the Ethereum Classic protocol, several protocol upgrades were scheduled to activate features that the Ethereum network already enabled over the past years. Atlantis, activated in September 2019, enabled the Agharta upgrade, which included the outstanding Byzantium changes. Agharta was followed by the incorporation of the Constantinople patches through the January 2020 upgrade. Finally, with the Phoenix upgrade, Ethereum Classic achieved protocol parity with Ethereum, allowing for fully cross-compatible applications between the two networks.
Mining algorithm[edit]
After a series of 51% attacks on the Ethereum Classic network in 2020,[11] a change to the underlying Ethash mining algorithm was considered by the community to prevent being a minority proof-of-work chain in the Ethash mining algorithm where Ethereum is dominating the hashrate. After evaluating various options such as Monero's RandomX or the standardized SHA-3-256, it was eventually decided to double the Ethash epoch duration from 30,000 to 60,000 in order to reduce the DAG size and prevent Ethash miners to easily switch to Ethereum Classic. This modified Ethash is also referred to as ETChash or Thanos upgrade.
Characteristics[edit]
Further information: Cryptocurrency
Ether (ETC)ETC logoDenominationsPluralEther(s)SymbolΞCodeETCNicknameEther Classic, Eth Classic, ClassicPrevious namesEthereum, ETH, EthPrecision18Subunits 10−9Gwei 10−18WeiDevelopmentOriginal author(s)Vitalik Buterin, Gavin WoodWhite paperethereum whitepaperImplementation(s)EVM 61Initial releaseFrontier / 30 July 2015; 8 years ago (2015-07-30)Latest releaseMystique / 12 February 2022; 2 years ago (2022-02-12)Code repositorygithub.com/ethereumclassicDevelopment statusActiveWritten inC++, Go, Python, Rust, ScalaOperating systemCross-platformDeveloper(s)Open-source software developmentSource modelOpen-source modelLicenseOpen-source licensesLedgerLedger start30 July 2015; 8 years ago (2015-07-30)Split height#1,920,000 / 20 July 2016; 7 years ago (2016-07-20)Split fromEthereum (ETH)Split ratio1:1Timestamping schemeProof-of-Work - ETChashHash functionKeccakIssuance scheduleBlock reward reduction of 20% every 5,000,000 blocksBlock rewardETC 2.56 + Uncle reqardsBlock time13.3 secsBlock explorerBlockscoutCirculating supply136,664,275 (2022-09-02)Supply limit210,700,000ValuationExchange rate1 ETC = $32.75 (2022-09-02)WebsiteWebsiteethereumclassic.org
As with other cryptocurrencies, the validity of each ether is provided by a blockchain, which is a continuously growing list of records, called "blocks", which are linked and secured using cryptography.[12][13] By design, the blockchain is inherently resistant to modification of the data. It is an open, distributed ledger that records transactions between two parties efficiently and in a verifiable and permanent way.[14] Unlike Bitcoin, Ethereum Classic operates using accounts and balances in a manner called state transitions. This does not rely upon unspent transaction outputs (UTXOs). The state denotes the current balances of all accounts and extra data. The state is not stored on the blockchain, it is stored in a separate Merkle Patricia tree. A cryptocurrency wallet stores the public and private "keys" or "addresses" which can be used to receive or spend Ether. These can be generated through BIP 39 style mnemonics for a BIP 32 "HD wallet". In the Ethereum tech stack, this is unnecessary as it does not operate in a UTXO scheme. With the private key, it is possible to write in the blockchain, effectively making an ether transaction.
To send Ether to an account, the Keccak-256 hash of the public key of that account is needed. Ether accounts are pseudonymous in that they are not linked to individual persons, but rather to one or more specific addresses.
Ether[edit]
ETC is a fundamental token for operation of Ethereum Classic, which thereby provides a public distributed ledger for transactions. It is used to pay for Gas, a unit of computation used in transactions and other state transitions. Within the context of Ethereum Classic it might be called ether, but it should not be confused with ETH, which is also called ether.
It is listed under the currency code ETC and traded on cryptocurrency exchanges, and the Greek uppercase Xi character (Ξ) is generally used for its currency symbol. It is also used to pay for transaction fees and computational services on the Ethereum Classic network.[15]
Addresses[edit]
Ethereum Classic addresses are composed of the prefix "0x", a common identifier for hexadecimal, concatenated with the rightmost 20 bytes of the Keccak-256 hash (big endian) of the ECDSA public key (the curve used is the so-called secp256k1, the same as bitcoin). In hexadecimal, two digits represent a byte, meaning addresses contain 40 hexadecimal digits. An example of an Ethereum Classic address is 0xb794f5ea0ba39494ce839613fffba74279579268. Contract addresses are in the same format, however, they are determined by sender and creation transaction nonce.[16] User accounts are indistinguishable from contract accounts given only an address for each and no blockchain data. Any valid Keccak-256 hash put into the described format is valid, even if it does not correspond to an account with a private key or a contract. This is unlike bitcoin, which uses base58check to ensure that addresses are properly typed.
Monetary policy[edit]
On 11 December 2017, the total supply of Ether on Ethereum Classic was hard capped at ETC 210,700,000 via the Gotham hard fork upgrade. This added a bitcoin-inspired deflationary emission schedule that is documented in Ethereum Classic Improvement Proposal (ECIP) 1017. The emission schedule, also known as "5M20", reduces the block reward by 20% every 5,000,000 blocks. Socially, this block reward reduction event has taken the moniker of "the fifthening."
ETA Date
Date
5M20 era
Block
Block reward
Total era emission
Total emission
-
30 July 2015
Era 1
1
ETC 5
ETC 25,000,000
ETC 25,000,000
December 2017
11 December 2017
Era 2
5,000,001
ETC 4
ETC 20,000,000
ETC 45,000,000
March 2020
17 March 2020
Era 3
10,000,001
ETC 3.2
ETC 16,000,000
ETC 61,000,000
April 2022
25 April 2022
Era 4
15,000,001
ETC 2.56
ETC 12,800,000
ETC 73,000,000
May 2024
-
Era 5
20,000,001
ETC 2.048
ETC 10,240,000
ETC 83,240,000
~2027
-
Era 6
25,000,001
ETC 1.6384
ETC 8,192,000
ETC 91,480,000
~2029
-
Era 7
30,000,001
ETC 1.31072
ETC 6,553,600
ETC 98,033,000
~2031
-
Era 8
35,000,001
ETC 1.048576
ETC 5,242,880
ETC 103,275,880
Ethereum Classic Improvement Proposal[edit]
The Ethereum Classic Improvement Proposal (ECIP) process enables engineers and computer scientists to propose modifications, upgrades, or fixes. Any software developer who is a GitHub user is allowed to make contributions to the ECIP process.[17] There is a number of ECIP types, each listed in the table below.[18]
ECIP Types
Type
Explanation
Standard Track
Any change that affects most or all Ethereum Classic implementations
Core
Improvements requiring a consensus fork
Networking
Improvements to networking protocol specifications
Interface
improvements around client API/RPC specifications and standards and certain language-level standards
ECBP
Application-level standards and conventions, including contract standards
Meta
Proposes a change to, or an event in, a process and often requires community consensus
Informational
Discussing a design flaw in Ethereum Classic or offering general guidelines or information to the Ethereum Classic community, without suggesting the addition of a new feature
Code is law[edit]
The people who continued with Ethereum Classic advocate for blockchain immutability, and the concept that "code is law"[19] against the pro-fork side (Ethereum) which largely argued for extra-protocol intentionality, decentralized decision-making, and conflict resolution.[20] Code is law refers to the idea that the code is above all else including law from outside forces such as a government. The law is written into the code, therefore, anything the code allows is legal.[21]
Attacks[edit]
The DAO fork replay attacks[edit]
On 20 July 2016, due to reliance on the same clients, the DAO fork created a replay attack where a transaction was broadcast on both the ETC and ETH networks. On 13 January 2017, the Ethereum Classic network was updated to resolve transaction replay attacks. The networks are now officially operating separately.[8]
RHG sells stolen ETC[edit]
On 10 August 2016, the ETH proponent Robin Hood Group transferred 2.9 million stolen ETC to Poloniex in an attempt to sell ETC for ETH on the advice of Bitly SA; 14% was successfully converted to ETH and other currencies, 86% was frozen by Poloniex.[8] On 30 August 2016, Poloniex returned the ETC funds to the RHG. They set up a refund contract on the ETC network.
Classic Ether Wallet website attack[edit]
On 29 June 2017, the Ethereum Classic Twitter account made a public statement indicating reason to believe that the website for Classic Ether Wallet had been compromised. The Ethereum Classic Twitter account confirmed the details released via Threatpost. The Ethereum Classic team worked with Cloudflare to place a warning on the compromised domain warning users of the phishing attack.[22][better source needed]
51% double spend attacks[edit]
ETC has experienced multiple 51% double-spending attacks throughout its history. These attacks exploit the decentralized nature of the network by amassing more than 50% of its mining power,[23] enabling attackers to manipulate transactions and double-spend digital assets. The first significant attack occurred in January 2019, when Ethereum Classic was subject to double-spending attacks and an estimated $1.1 million worth of ETC was double-spent.[24][25] In response, the Ethereum Classic team initiated several network upgrades, including the adoption of a modified version of the Proof of Work (PoW) consensus algorithm called "ECIP-1049 Keccak256."[26] Despite these efforts, an additional 51% of attacks were carried out in August and October of 2020,[27][11] with estimated losses of $5.6 million and $1.68 million, respectively.[28]
References[edit]
^ Vigna, Paul (28 October 2015). "BitBeat: Microsoft to Offer Ethereum-Based Services on Azure". The Wall Street Journal (Blog). News Corp. Retrieved 17 February 2016.
^ a b c d e f Vigna, Paul (1 August 2016). "The Great Digital-Currency Debate: 'New' Ethereum Vs. Ethereum 'Classic'". The Wall Street Journal (Blog). News Corp. Retrieved 5 March 2020.
^ Russel, Jon (11 June 2018). "Coinbase will add Ethereum Classic to its exchange 'in the coming months'". TechCrunch.com. TechCrunch. Retrieved 5 March 2020.
^ Tapscott, Don (2016). Blockchain revolution : how the technology behind bitcoin is changing money, business, and the world. Toronto, Ontario, Canada: Portfolio/Penguin. ISBN 978-0670069972.
^ Waters, Richard (18 June 2016). "'Ether' brought to earth by theft of $50m in cryptocurrency". Financial Times. Retrieved 19 October 2018.
^ Leising, Matthew (13 June 2017). "Ether thief remains mystery year after $55 million heist". www.bloomberg.com. Bloomberg News.
^ Popper, Nathaniel (27 May 2016). "Paper Points Up Flaws in Venture Fund Based on Virtual Money". The New York Times. ISSN 0362-4331. Retrieved 12 July 2017.
^ a b c d e Andreas M. Antonopoulos, Gavin Wood (2018): "Ethereum timeline". In Mastering Ethereum: Building Smart Contracts and DApps, page 329. O'Reilly Media; 424 pages. ISBN 9781491971918
^ De Jesus, Cecille (19 July 2016). "The DAO Heist Undone: 97% of ETH Holders Vote for the Hard Fork". Futurism, LLC. Archived from the original on 7 August 2017. Retrieved 16 May 2017.
^ Matthew Leising (2017-06-13): "The Ether Thief". Online article, Bloomberg. Accessed on 2019-02-16.
^ a b "Ethereum Classic faced '51 percent attack'" (in Turkish). Bloomberg HT. 31 August 2020.
^ "Blockchains: The great chain of being sure about things". The Economist. 31 October 2015. Retrieved 18 June 2016. The technology behind bitcoin lets people who do not know or trust each other build a dependable ledger. This has implications far beyond the crypto currency.
^ Narayanan, Arvind; Bonneau, Joseph; Felten, Edward; Miller, Andrew; Goldfeder, Steven (2016). Bitcoin and Cryptocurrency Technologies: a Comprehensive Introduction. Princeton: Princeton University Press. ISBN 978-0-691-17169-2.
^ Iansiti, Marco; Lakhani, Karim R. (January 2017). "The Truth About Blockchain". Harvard Business Review. Harvard University. Retrieved 17 January 2017. The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.
^ Popper, Nathaniel (27 March 2016). "Ethereum, a Virtual Currency, Enables Transactions That Rival Bitcoin's". The New York Times. Archived from the original on 24 July 2016. Retrieved 2 September 2016.
^ Wood, Gavin (3 February 2018). "ETHEREUM: A SECURE DECENTRALISED GENERALISED TRANSACTION LEDGER (EIP-150)". yellowpaper.io. Archived from the original on 3 February 2018. Retrieved 3 February 2018.
^ McIntyre, Donald (20 December 2022). "How to Contribute to ETC: The Improvement Proposal Process (ECIP)". ethereumclassic.org. Retrieved 20 December 2022.
^ "ECIPs". ethereumclassic.
^ Pearson, Jordan (27 July 2016). "The Ethereum Hard Fork Spawned a Shaky Rebellion". Motherboard. Retrieved 15 May 2017.
^ Primavera De Filippi (11 July 2016). "A $50M Hack Tests the Values of Communities Run by Code". Motherboard. Retrieved 15 May 2017.
^ Quinn, John. "'Code Is Law' During The Age Of Blockchain". Forbess. Retrieved 5 April 2023.
^ Russon, Mary-Ann (30 June 2017). "Classic Ether Wallet has been hacked – do not use it to send currency". International Business Times.
^ Frankenfield, Jake. "51% Attack: Definition, Who Is at Risk, Example, and Cost." Investopedia. Investopedia, 03 Jan. 2023. Web. 4 Apr. 2023.
^ Kharif, Olga (7 January 2019). "Ethereum Classic Movements Halted by Coinbase on Signs of Attack". Bloomberg.
^ Goodin, Dan (7 January 2019). "Almost $500,000 in Ethereum Classic coin stolen by forking its blockchain". Ars Technica.
^ Bob Summerwill, Alexander Tsankov. "Change the ETC Proof of Work Algorithm to KECCAK256." Ethereum Classic Improvement Proposals. 03 Nov. 2022. Web. 4 Apr. 2023.
^ Berbedj, Loana (17 August 2020). "Ethereum Classic cryptocurrency victim of two computer attacks in one week". Les Echos (in French).
^ Howarth, Dan. "Hackers Launch Third 51% Attack on Ethereum Classic This Month." Decrypt. Decrypt, 18 Nov. 2020. Web. 4 Apr. 2023.
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