EIP-3074 (AUTH and AUTHCALL)

EIP-3074, officially titled AUTH and AUTHCALL opcodes and created on 15 October 2020, proposed two new EVM opcodes. The AUTH opcode validates an ECDSA signature from an EOA over a message combining a commit and the invoker address, setting that account as authorized in the context. The AUTHCALL opcode then executes a call using the authorized account as msg.sender, so the invoker contract acts on behalf of the EOA to batch operations or sponsor gas.

Its value is historical. EIP-3074 is a conceptual antecedent in the account abstraction lineage, not a current standard. Criticism of its design, chiefly that an invoker gained permanent power over the account and that it added high-impact new opcodes, led to a more conservative approach. That is why it carries a Withdrawn status.

Its direct successor is EIP-7702, which reaches similar goals, letting an EOA temporarily delegate its behavior to contract code, without new opcodes and in a reversible way. EIP-7702 went live on mainnet with the Pectra upgrade, activated on 7 May 2025. In today's ecosystem the standard in use is 7702, while ERC-4337 represents the parallel account abstraction path that coexisted with 3074. The comparison between the three appears often in development guides and in Ethereum's All Core Developers discussions.