category-labs/monad-bft v0.16.1

on GitHub

⚠️ 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.

⚠️ Mandatory upgrade for all mainnet nodes before 2026-09-02 14:30 UTC. This release sets the MONAD_TEN activation timestamp for mainnet. A node still on v0.16.0 or earlier after that instant will continue applying MONAD_NINE rules and diverge from the network.

v0.16.1

Tags or hashes:

• monad-bft (consensus): tag v0.16.1 (12b7017d6)
• monad (execution): tag v0.16.1 (7279dfc7b)

Highlights

• MONAD_TEN activation on mainnet — MIP-8 (page-encoded storage) activates on mainnet at timestamp 1788359400 (2026-09-02 14:30 UTC). Mainnet counterpart to the testnet activation shipped in v0.16.0.
• Page-encoded timeline now required on mainnet — nodes must present either a page-encoded primary (Phase C) or an active secondary timeline (Phase A/B dual-db), or they will fail to start.
• Dual-db commit support in the ethblocks runloop, allowing nodes still in Phase A/B to commit to both timelines.

Notable consensus/protocol changes

• [Execution] Set MONAD_TEN activation timestamp for mainnet — 1788359400 (2026-09-02 14:30 UTC). MONAD_NINE remains in effect for timestamps below that. Ref: monad (execution) PR #2489
• [Execution] Enforce page-encoded timeline assertion on mainnet — previously testnet-only. Nodes that have not completed Phase A (dual-db activation) will fail to start. Ref: monad (execution) PR #2489

Notable robustness changes

• [Consensus] monad-dataplane: fall back gracefully when io_uring buffer ring setup fails, instead of failing node startup. Ref: monad-bft PR #3201
• [Execution] Allow dual-db commit in runloop_monad_ethblocks where secondary_db is optional, so Phase A/B nodes commit to both timelines. Ref: monad (execution) commit df14e67bb

Notable internal changes

• [Execution] Consolidate dual-db mirroring behind for_each_db, replacing duplicated commit paths in runloop_monad. Ref: monad (execution) commit d836afc18
• [Consensus] Fix the buffer-ring fallback build — remove a stale metrics argument that does not exist on this branch. Ref: monad-bft commit 12b7017d6

Full Changelog: v0.16.0...v0.16.1