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monad (execution) v0.15.2 Changelog

Tag: v0.15.2
Commit: 2422a8592

Highlights

• MIP-8 gas schedule — adds page-based storage gas schedule; eth_createAccessList deduplicates storage keys by page (activation in a future release)
• Follow-up to MIP-12: Block reward validation — maximum block reward is now validated; blocks exceeding the cap are rejected
• EIP-7843: Consensus round in tx context — Monad consensus round number threaded into evmc_tx_context via BlockHeader::slot_number
• Dual-timeline DB support — MPT database supports a secondary page-encoded timeline; statesync works with both slot- and page-encoded databases

Protocol changes

• MIP-8: Gas schedule for page-based storage — adds page-based gas schedule (activation in a future release). Ref: monad (execution) PR #2268
• Follow-up to MIP-12: Validate maximum block reward — blocks exceeding the cap are now rejected. Ref: monad (execution) PR #2365
• EIP-7843: Thread Monad consensus round into evmc_tx_context via BlockHeader::slot_number. Ref: monad (execution) PR #2324
• AMSTERDAM EVM revision — new EVM revision targeting the Amsterdam hardfork. Ref: monad (execution) PR #2368

RPC/SDK changes

• eth_createAccessList now deduplicates storage keys by page under MIP-8. Ref: monad (execution) PR #2253
• Fix eth_getStorageAt returning 0 on page-encoded nodes. Ref: monad (execution) PR #2393
• eth_call execution revert error code changed from -32603 to 3 — aligns with standard EVM behavior.

Robustness fixes

• Memory-bounded LRU cache for execution state reads. Ref: monad (execution) PR #2376
• Statesync: reject messages with trailing bytes. Ref: monad (execution) PR #2370
• Trim both timelines in tandem in dynamic history length adjustment. Ref: monad (execution) PR #2431
• Expose dual-DB migration phase via FFI. Ref: monad (execution) PR #2433
• Fix monad-mpt --activate-secondary corrupting DB metadata on nodes that previously ran --upgrade; adds monad-mpt --repair to recover affected pools. Ref: monad (execution) PR #2403
• DbCache read-through caching — reads now cached on miss, reducing redundant disk reads during page-encoded commit. Ref: monad (execution) PR #2414

Internal changes

• Dual-timeline: MPT database supports a secondary timeline. Ref: monad (execution) PR #2228, PR #2302
• Page storage: TrieDb and runloop are page-encoding-aware; statesync works with page-encoded databases. Ref: monad (execution) PR #2354, PR #2383, PR #2385, PR #2386
• monad-cli --version now accepts latest_finalized. Ref: monad (execution) PR #2364
• Support binary snapshot dump/load on secondary timeline and page-encoded DB. Ref: monad (execution) PR #2366

Full Changelog: v0.15.1...v0.15.2