EIP-8298 SETCODEFROM Code Reuse Instruction

Clients open a cell for the why, the three checks and the evidence

Spec changes and their tests newest first; each EIP commit, the EELS change that pinned it, its first release and the client runs on it

1. 2026-10-22f4a9f965Update EIP-8298: Add adoption guidance to Security Considerations✓ EELS v2.0.0 implements this text
   tests: EELS commit 015f2abc pinned this text on 2026-10-27 · first release v2.0.0 · run against it: Nethermind, Geth, Reth, ethrex
2. 2026-10-12fa391567Update EIP-8298: close spec gaps found writing tests; assign opcode 0xA7– older
   tests: no EELS release tests this text.
3. 2026-10-06c2471607Update EIP-8298: Add public mempool rules– older
   tests: EELS PR #3769 pinned this text on 2026-10-27, test files test_account_migration.py, test_execution_contexts.py, test_fork_transition.py and 2 more · a later EELS pin replaced it before any release, so no client ran it
4. 2026-10-029bff5ef1Update EIP-8298: record adopted code as a hash in the BAL; reject same-tx-created sources– older
   tests: no EELS release tests this text.
5. 2026-09-24210a28daUpdate EIP-8298: allow SETCODEFROM in initcode and require an existing source– older
   tests: no EELS release tests this text.
6. 2026-08-281dd4443bUpdate EIP-8151: clarify code lifecycle and gas pricing (commit for EIP-8151; it also edits this EIP)– older
   tests: no EELS release tests this text.
7. 2026-07-01f5878ee9Add EIP: SETCODEFROM Code Reuse Instruction– older
   tests: no EELS release tests this text.

Code and PRs

code merged: at least 2 files on the default branch name EIP-8298 in path or contents, or a merged PR whose title names it; spec changed since: a spec change after the last merged PR; PRs merged since 2026-09-07; a hint from names, it never changes a test verdict