All Core Devs Meeting 16 Agenda

Meeting Date/Time: Friday 5/19/17 at 14:00 UTC

Meeting Duration 1.5 hours

YouTube Live Stream Link

Agenda

1. ERC-20 Token Standard Finalization [Fabian, Nick, or Hudson]

• Point of contention: throw vs return false;

2. Metropolis updates/EIPs.

• a. Details and implementations of EIPs.
  • "Agreeing on gas costs for MODEXP, ECADD, ECMUL, ECPAIRING. For MODEXP specifically, are we going to modify it to somehow incorporate bit length or not?" [Vitalik]
  • Concerns around the REVERT opcode introducing an economic change that may break things and revisiting cost/benefit analysis of the opcode. [Vitalik]
  • "Regarding EIP 96: should the gas price of BLOCKHASH already change from the beginning of the Metropolis, or from the block where the behavior of BLOCKHASH changes?" More info: https://github.com/ethereum/EIPs/pull/210/files#r117211219 [Yoichi]
  • "Regarding EIP96 (BLOCKHASH contract): should the blockhash-maintainance call at the beginning of each block increment the nonce of SYSTEM_ACCOUNT? https://github.com/ethereum/EIPs/pull/210/files#r117260179" [Yoichi]
  • "Regarding EIP98 (med state removal): this should start at (inclusive) METROPOLIS_FORK_BLKNUM instead of one block after that (as written in the EIP). Pointed out by @gumb0 Remove medstate from receipts EIPs#98 (comment)" [Yoichi]
  • "Regarding EIP 211 (RETURNDATACOPY): the behavior of reading out-of-bounds from the returndata buffer is under discussion." [Yoichi]
• b. Updates to testing.
  • Proposal: "Freeze" EIPs to allow for testing. [Yoichi]
• c. Any "subtleties" we need to work out.
• d. Review time estimate for testing/release.

3. [Time permitting] "If we have time (no high priority), I would like to get some feedback about adding functionality that allows dapps to be notified whenever a certain address was touched by a transaction (including internal calls). This information does not necessarily have to be part of the block, but could be an isolated index database." [Christian R.]

Please provide comments to add or correct agenda topics.