v0.16.0

⚠️ Do not upgrade your mainnet or testnet node until you receive an official announcement.
Upgrades are communicated via official channels. See upgrade instructions for details.

v0.16.0

Tags or hashes:

• monad-bft (consensus): tag v0.16.0 (c616743d1)
• monad (execution): tag v0.16.0 (e81ffe31c)

Highlights

• MONAD_TEN activation — MIP-8 (page-encoded storage) activates on testnet at timestamp 1786545000 (2026-08-12 14:30 UTC). Mainnet activation not yet set (staged rollout).
• Protocol-level change requiring a version bump from v0.15.x to v0.16.0.
• Robustness fixes, performance improvements, and internal refactors on top of v0.15.2.

Notable consensus/protocol changes

• [Execution] Activate MONAD_TEN — MIP-8 (page-encoded storage) activation on testnet (2026-08-12 14:30 UTC). Requires dual-db mode; nodes that have not completed Phase A will fail to start. Ref: monad (execution) PR #2459

Notable robustness changes

• [Execution] Enforce page-encoded timeline assertion on testnet — nodes that have not completed Phase A (dual-db activation) will fail to start. Ref: monad (execution) PR #2475
• [Consensus] Reject storage keys over 32 bytes. Ref: monad-bft PR #3160
• [Consensus] Raptorcast: hardening secondary raptorcast client. Ref: monad-bft PR #3157
• [Execution] Throw on maximum code size exceeded; dispatch MONAD_ASSERT_THROW through MONAD_THROW. Ref: monad (execution) PR #2415
• [Execution] mpt: bound promote target primary_ring_idx to a valid ring selector. Ref: monad (execution) PR #2421

Notable performance changes

• [Execution] Tweak runtime signextend for better codegen. Ref: monad (execution) PR #1527

Notable internal changes

• [Consensus] Enable metrics endpoint by default. Ref: monad-bft PR #3167
• [Execution] Refactor ECDSA signature recovery (incl. EcdsaSignature rename). Ref: monad (execution) PR #2402
• [Execution] Dedup storage read path across TrieDb and TrieRODb. Ref: monad (execution) PR #2436
• [Execution] Dedup page→slot fan-out behind StoragePageSlots. Ref: monad (execution) PR #2434
• [Execution] Vendor blake2b compression, replacing silkpre's BLAKE2F precompile. Ref: monad (execution) PR #2418
• [Execution] snapshot: raise fd limit, fail fast, report open errors on dump. Ref: monad (execution) PR #2419
• [Execution] Add is_code_tracer to StateTracer. Ref: monad (execution) PR #2448
• [Execution] Runloop as a C library. Ref: monad (execution) PR #2021

Full Changelog: v0.15.2...v0.16.0