Week in Ethereum News
January 21, 2023

Eth News and Links

Shapella (Shanghai + Capella) upgrade

  • Withdrawals FAQ
  • Latest core devs execution call videoSummary by Tim Beiko.  Notes from Tim Beiko & Christine Kim:
    • withdrawal-devnet-3 tested EL & CL both using gwei units for withdrawals
    • Sepolia shadow fork went smoothly
    • Mainnet shadow fork next week
    • Withdrawal root in Execution Layer will remain RLP encoded (CL is SSZ)
    • EIP6049 (deprecation notice for SELFDESTRUCT) added to Shanghai
    • EOF EIPs added as candidates for inclusion in Cancun upgrade
    • Eth Magicians to be used for community input on scope of future upgrades
  • withdrawal-devnet-2 retired: tx-fuzz found issues with EthereumJS sometimes producing bad blocks and Geth txpool not rejecting bad transactions
  • Zhejiang public testnet for Shapella upgrade expected after the client interop next week
  • Shapella community call video 

Dencun (Cancun + Deneb) upgrade

Layer 1

Client releases

  • Consensus layer:
    • Nimbus v23.1.0: on-the-fly database pruning, 60-70 GB storage for typical beacon node
  • Execution layer:
    • Erigon v2.36.0: block body downloader fix and MDBX upgrade rolled back 



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Stuff for developers


  • Echidna v2.0.5 (contract fuzzer): adds prank to override msg.sender for next external call
  • Read-only reentrancy explainer



Application layer

Job Listings

Job listings: $600 for four issues (75 character limit), payable in ETH/DAI/USDC to abcoathup.eth on mainnet or Layer 2.  Questions? abcoathup at-gmail



  • zkalc: calculate time to perform cryptographic operations on selected computers
  • zk system benchmarking: standard benchmarks for comparing zk proof library performance
  • Halo2 FRI gadget: FRI verifier circuit for BN254 scalar field

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