For a list of popular Ethereum forums and chat applications click here.Įthereum test network configuration and test ETH faucet information Basically everything you need to test and deploy smart contracts or decentralized applications on each chain. Each link contains network configuration, links to multiple faucets for test ETH and tokens, bridge details, and technical resources for each blockchain. Additional information about Optimismīelow is a list of EVM compatible Mainnet and Testnet blockchain networks. To test Uniswap on the Optimistic Ethereum Kovan testnet visit Unipig exchange. ![]() It demonstrates the improvements that are possible with layer 2 solutions. The Unipig exchange is the Uniswap exchange running on the Optimistic Ethereum Kovan testnet. Read their documentation for more information. If you want to deploy a contract to the testnet, you will need to use the ETH Gateway to deposit some test ETH into the layer 2 test environment. The Optimism node will charge you transaction fees that are equivalent to Mainnet fees. You can bypass gas fees locally by setting gasPrice: 0 to your transactions. Type the below information into MetaMask: It will make it easier to put this information into MetaMask and will prevent the screen from closing on you. If you would like to deploy your smart contracts on the Optimistic Ethereum Kovan testnet configure MetaMask with the following information:Ĭopy and past the information below in a text editor. Optimistic Ethereum layer 2 is on the Kovan testnet. Once you try this service you will be amazed at how fast and cheap transactions are on Optimism. To learn how to swap tokens and provide liquidity on Uniswap with low fees and fast confirmation use the appropriate links above. Not having to modify as much of the original code makes it less likely to introduce bugs.Liquidity and trading using Uniswap on Optimism According to Optimism, Bedrock Edition will significantly reduce the difference in the code base between Optimism’s Geth fork, and the “official” go-ethereum client. The Optimism team is currently in the process of specifying and building the next major release, Optimism: Bedrock Edition. The post also points to the importance of bug bounty programs. We’ll be updating our disclosure protocol to more closely match Geth’s in the near future,” “it’s clear that the ecosystem will soon be far too large for this to remain practical. ![]() Growing DeFi ecosystem makes security complexĪccording to Optimism’s blog post, defending the DeFi ecosystem against security issues is becoming increasingly complex, to a significant extent as a direct consequence of decentralization itself. The announcement does not, however, speculate on possible damages if the bug had been exploited by a malicious hacker. The fact that the maximum amount was paid, indicates the seriousness of the bug. Apart from the announcement, the Optimism team has also published a detailed breakdown of the incident.Īs part of Optimism’s Immunefi bug bounty program, the maximum amount of just over $2 million was paid out to Jay Freeman. As per the report, “no usable excess ETH was generated.”Īccording to the announcement, within hours of confirmation, the Optimism team developed and deployed a fix on the Kovan and Mainnet networks, mending the bug, and sent alerts to teams developing vulnerable Optimism forks and to L1-L2 bridge providers. The bug seems to have been accidentally triggered on one occasion by an employee at the popular block explorer Etherscan. Bug triggered by Etherscan employeeĪnalysis of Optimism’s blockchain history carried out by the Optimism team showed that the bug was not exploited. The bug made it possible for a malicious hacker to create ETH on Optimism by “repeatedly triggering the “SELF-DESTRUCT” opcode on a contract that held an ETH balance.” Opcodes are different types of instructions that can run on the Ethereum Virtual Machine ( EVM ) execution environment. As per the Optimism announcement “Funds Are Safu.” On February 2nd, the Optimism team was alerted by Jay Freeman of a critical bug in Optimism’s fork of the Ethereum Geth client software. Ethereum Layer-2 solution Optimism has fixed a critical software bug in one of its smart contracts on Ethereum.
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