Week in Ethereum News
December 24, 2021

Eth News and Links

Mainnet execution layer

Proof of Stake consensus layer

  • Bellatrix chosen as the name for consensus layer upgrade to switch off PoW
  • Consensus specs v1.1.7: light-client sync simplification, fork choice rule fixes and new test vectors


  • Transak fiat on-ramp to Arbitrum and Optimism (not currently in US)
  • Banxa fiat on-ramp to Arbitrum
  • DeversiFi fiat on-ramp via MoonPay
  • Loopring Layer 2 starter wallet on iOS, pay later to deploy to Layer 1 for mainnet withdrawal and more features, fiat on-ramp via Ramp
  • Across Protocol: bridge now two way, adds mainnet to Arbitrum, Optimism and Boba
  • StarkWare Layer 3 scaling: application specific layer using recursive proofs, StarkEx Layer 2’s can be ported to Layer 3

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Stuff for developers

  • Solidity v0.8.11: Solidity Language Server minimal feature set, native binary only, no autocomplete yet, hook up to favorite IDE and feedback; abi.encodeCall added to check supplied values match expected types
  • Etherscan adds initial Natspec support: view notice, parameter & return descriptions in read & write contract tabs
  • WalletConnect v2 beta Swift & Kotlin SDKs
  • hardhat-deploy-tenderly: push deployed contract to Tenderly for debugging
  • Yul-Log: write & use Yul+ contracts, supports Truffle, Hardhat in progress
  • sipping-oe (scaffold-eth): starter kit to deploy on-chain SVG NFTs to Optimism [Disclosure: I was gifted an OΞ40]
  • ethereum-code-viewer: adds support for Arbitrum, Optimism and testnets
  • ens2airdrop: collect addresses from “drop your ENS” Twitter threads
  • Helios: work in progress ERC1155 based exchange
  • Cairo-jupyter: Jupyter kernel for Cairo 
  • Guide to building an MEV inspector using example CryptoPunk inspector
  • Notion supports Solidity code blocks


  • Bent Finance ~$1.75 million exploit, reported rogue developer upgraded contract with hardcoded balances for exploiter account
  • Visor Finance 8.8 million VISR exploit, staking contract drained, attack contract set owner to be itself 
  • Sorbet Finance vulnerability post mortem, contract could make arbitrary low level calls, $27 million in user funds rescued to escrow, $744k stolen
  • Adidas token drop capped to 2 NFTs per address, custom contract purchased 330 NFTs, 165 subcontracts claimed 2 NFTs each



  • Coca-Cola snow globe NFTs on VeVe (Immutable X)
  • RadioShack DeFi: historic brand reused for DeFi project
  • SAP joins as a sponsor of Enterprise Ethereum Alliance community projects in support of Baseline

Application layer

  • Quixotic: NFT marketplace for Optimism, beta
  • Eth.xyz: add “.xyz” to ENS name for URL shareable ENS profile
  • Shaq changes Twitter handle to ENS & launches 10k NFT collection for his foundation
  • Rarible: gift NFTs using Linkdrop, sponsor the transaction for recipients to claim for free
  • Collab.Land supports Arbitrum
  • Argent: gift ETH/USDC on zk-sync Layer 2, recipients create an Argent Layer 2 wallet to claim
  • Gnosis Safe deployed to Optimism
  • Kwenta shorting live on Optimism
  • Thales positional markets live on Optimism, with beta AMM
  • dHEDGE: 30 day trading competition on Optimism
  • Slingshot trading live on Optimism
  • Gearbox composable leverage live on mainnet
  • ZKyber: Kyber’s zk-rollup and DEX on testnet
  • microETH: 0.000001 ETH wrapped in ERC20, for unit bias

Job Listings

Reach developers experienced with Ethereum.  $444 for four issues (~75 character limit), payable in ETH/DAI/USDC to abcoathup.eth on mainnet, Arbitrum or Optimism.  Questions? abcoathup at-gmail



Follow @WeekinEthNews to find out what the most clicked links are. Follow @evan_van_ness and @abcoathup to get most of the week’s news in real time.

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Dates of Note

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