You can find a recap of this call here: https://medium.com/@TokenHash/ethereum-classic-etc-ecip-1054-atlantis-hard-fork-call-recap-a91e796d7a8b Agenda: 1. Current situation: ECIP-1054 named “Atlantis” has undergone developer technical discussion and is ready for wider community discussion with node operators, miners, and the rest of network participants and users. 2. Goals: The goals for Atlantis are: - To make ETC compatible with the Ethereum Foundation hard forks named “Spurious Dragon” and “Byzantium”. - Deploy on block 1,039,000 on Kotti — early August 2019. - Deploy on block 4,723,000 on Morden — early August 2019. - Deploy on block 8,750,000 on ETC mainnet — mid-September 2019. - To gain node operator and miner consensus in these goals and deployment dates. - To revise these goals and deployment dates ASAP in case there are objections or disagreements. 3. Description: ECIP-1054 Atlantis includes the following changes and additions: - Spurious Dragon state-trie clearing. - Spurious Dragon contract-code size limit. - Byzantium EVM opcodes, namely REVERT, RETURNDATASIZE, RETURNDATACOPY, and STATICCALL. - Byzantium EVM precompiled contracts, namely addition and scalar multiplication on the elliptic curve alt_bn128, optimal ate pairing check on the elliptic curve alt_bn128, and BIGINT modular exponentiation. - Replacing the intermediate state root field in transaction receipts with the contract return status. - Change difficulty adjustment to target mean block time including uncle. 4. Invite creators to describe their proposal: Developers invited to describe the changes are: - Isaac Ardis @ isaac - @ Soc1c - Wei Tang @ Sorpaas - Other devs who participated 5. Open discussion: After developer comments, ECIP-1054 Atlantis is open for discussion. Useful links: Full ECIP-1054 Atlantis on Github: https://github.com/etclabscore/ECIPs/blob/master/ECIPs/ECIP-1054.md Technical specifications for each EIP can be found at those documents respectively: - EIP 100 (Change difficulty adjustment to target mean block time including uncles) - EIP 140 (REVERT instruction in the Ethereum Virtual Machine) - EIP 161 (State-trie clearing) - EIP 170 (Contract-code size limit) - EIP 196 (Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128) - EIP 197 (Precompiled contracts for optimal ate pairing check on the elliptic curve alt_bn128) - EIP 198 (Precompiled contract for BIGINT modular exponentiation) - EIP 211 (New opcodes RETURNDATASIZE and RETURNDATACOPY) - EIP 214 (New opcode STATICCALL) - EIP 658 (Embedding transaction status code in receipts)