v0.14.2

monad (execution) v0.14.2 Changelog

Tag: v0.14.2
Commit: 169e5c45b

Robustness fixes

• [Execution] Fix possible UB in unaligned read
  • Ref: PR #2168
• [Execution] Fix incorrect auto_expire_version initialization after DB reset
  • Ref: PR #2167
• [Execution] Fix compaction progress reset during statesync
  • Ref: PR #2133
  • Fixes compaction head being incorrectly reset to 0 during statesync, causing compaction to restart from the beginning

Performance changes

• [Execution] Optimize trie node array access (8-9x speedup on compaction hot path)
  • Ref: PR #2163
  • Hoists base pointers for packed node arrays via std::span<unaligned_t<T>>; reduces redundant pointer recomputation in compaction, expiration, and version tracking loops

Internal changes

• [Execution] Replace system boost fiber with submodule (boost-1.83.0)
  • Ref: PR #2157
• [Execution] Separate precompile gas cost calculation from runtime implementation
  • Ref: PR #2099, PR #2098
  • Prep work for zkVM compilation
• [Execution] Remove support for EVMC_FRONTIER
  • Ref: PR #2041
• [Execution] Add block-level event recording for Ethereum and Monad replay
  • Ref: PR #2006
  • Emits BLOCK_START/BLOCK_END events during replay, making replay event streams usable for tooling

v0.14.0

monad (execution) v0.14.0 Changelog

Tag: v0.14.0
Commit: 54e132cfa

RPC/SDK changes

• [Execution] Add execution events Rust SDK with path resolution and descriptor info
  • Ref: PR #2123, PR #2135, PR #2136
• [Execution] Native transfer tracer scaffolding (not yet wired to RPC)
  • Ref: PR #1926

Robustness fixes

• [Execution] Remove ASSERT that relied on suboptimality of reserve balance accounting
  • Ref: PR #2096
• [Execution] Fix runloop_monad off-by-one when nblocks=1
  • Ref: PR #2018
• [Execution] Fix RangedGetMachine skipping keys past min prefix
  • Ref: PR #2110
• [Execution] Fix minor RLP errors, union type-punning, event padding bits
  • Ref: PR #2108, PR #2078, PR #2102
• [Execution] Fix CLI crash on unexpected arguments
  • Ref: PR #2138
• [Execution] Fix node writer reentrance causing non-contiguous writes
  • Ref: PR #2082
• [Execution] Fix undefined behavior in RLP encoding with empty inputs
  • Ref: PR #2152
• [Execution] Fix dangling pointer in events SDK, executor count, predecessor tx wait
  • Ref: PR #2139, PR #2104, PR #2128
• [Execution] Stricter RLP decoding: error for oversized bytes32
  • Ref: PR #2159

Performance changes

• [Execution] Improve fast list compaction offset calculation with hysteresis
  • Ref: PR #2107
• [Execution] Compaction offset refactor and runtime header performance optimizations
  • Ref: PR #2130, PR #2050

Internal changes

• [Execution] Refactor chain: remove static_validate_header and validate_transaction virtual methods
  • Ref: PR #2049
• [Execution] Add eventwatch example program for execution events
  • Ref: PR #2137

v0.14.1

Execution layer unchanged from v0.14.0. This tag is provided for version consistency with monad-bft v0.14.1.

• monad (execution): 54e132cfa — same commit as v0.14.0

For full release notes, see monad-bft v0.14.1.

v0.14.0-rc.1

v0.14.0-rc.1 is ready for testing. This release includes robustness fixes, execution events Rust SDK, performance improvements, and stricter RLP validation.

Note: This is a pre-release for testing and validation only. Not recommended for production use. If you run into any issues, please include Release: v0.14.0-rc.1 in the name of any issues you create.

Tag: v0.14.0-rc.1
Commit: 54e132cfa

The corresponding monad-bft (consensus) release is v0.14.0-rc.1.

SDK

• PR #2123 - Add execution events Rust SDK
• PR #2135 - Expose event descriptor info in events SDK
• PR #2136 - Add path resolution to rust events SDK
• PR #2137 - Add eventwatch example program for execution events

Robustness fixes

• PR #2082 - Fix node writer reentrance causing non-contiguous writes
• PR #2152 - Fix undefined behavior in RLP encoding with empty inputs
• PR #2096 - Remove ASSERT that relied on suboptimality of reserve balance accounting
• PR #2139 - Fix dangling pointer in rust events SDK FFI call
• PR #2104 - Fix executing_count decrement in executor
• PR #2128 - Wait for predecessor tx on early validation failure
• PR #2159 - Stricter RLP decoding: error for oversized bytes32
• PR #2110 - Fix RangedGetMachine skipping keys past min prefix
• PR #2108 - Fix minor RLP error handling issues
• PR #2078 - Replace union type-punning with explicit bit shifts
• PR #2102 - Zero-initialize padding bits in execution events
• PR #2138 - Fix CLI crash on unexpected arguments
• PR #2018 - Fix runloop_monad off-by-one when nblocks=1

Performance

• PR #2107 - Improve fast list compaction offset calculation with hysteresis
• PR #2130 - Introduce compact_offset_pair to reduce offset boilerplate
• PR #2050 - Runtime header refactor with performance optimizations

Internal changes

• PR #2049 - Refactor chain: dispatch via traits instead of virtual methods

Complete Changelog:
v0.13.1...v0.14.0-rc.1

v0.13.1

v0.13.1

This is a patch release to accompany monad-bft v0.13.1.

No changes to monad (execution layer) - this tag points to the same commit as v0.13.0 (722cbf5b5).

The fix for State Archive node RPC issues is in the monad-bft repository: monad-bft
v0.13.1

v0.13.0

monad (execution) v0.13.0 Changelog

Tag: v0.13.0+1
Commit: 722cbf5b5

Note: Canonical version is v0.13.0. The +1 build metadata indicates a post-release rebuild that includes the reserve balance precompile fallback cost fix (PR #2109).

MONAD_NINE Activation

MIP-3: Linear memory implementation

• PR #2032

MIP-4: Reserve balance precompile

• PR #2040 - scaffolding
• PR #2065 - cached/incremental checks
• PR #2086 - add dippedIntoReserve
• PR #2106 - dippedIntoReserve argument length error
• PR #2109 - fallback cost fix for clean spec
• PR #2037 - skip reserve checks for init-selfdestruct

MIP-5: Osaka fork (CLZ opcode)

• PR #2024

Robustness fixes

• PR #2053 - Fix ThreadSanitizer race by joining bootstrap fiber before thread exit
• PR #2039 - Include account balance in selfdestruct tracer frame
• PR #2083 - Fix sentinel collision in compact virtual chunk offset
• PR #2092 - Fix potential race condition in execute_block_transactions

Internal changes

• PR #2097 - Add evm-as syntactic sugar for VM utilities
• PR #2054 - Remove unnecessary fiber yield calls from DB worker thread

v0.12.8

monad (execution) v0.12.8 Changelog

Tag: v0.12.8

Protocol Changes

Prep for MONAD_NINE

MIP-3: Linear Memory Pool

• Combine EVM memory regions into one transaction-wide memory region
• VM memory pool implementation
• Ref: cc6f45669, c54fc3a73, 5562f4f1c

Reserve Balance Precompile Scaffolding

• Reserve balance precompile scaffolding for MIP-4
• Ref: aebac934b

Osaka Fork Preparation

• Activate Osaka in MONAD_NEXT
• Ref: 8f8564b8b

Robustness Fixes

• Fix expmod padding crash - cbbd825b4
• Avoid potential UB on empty precompile input - 48f6d8276
• Don't recover high-s authorities - c54fc3a73
• statesync client: only copy state and code to current to avoid stale data - 5130f0e84
• Move version erasure logic to write_new_root_node() - 0f6ed8e5f

Performance Improvements

• Undefer cold charge in storage - 3515ad320
• Track stack offset to prevent store forwarding stalls - 5562f4f1c
• Change State::set_code to reuse Intercode objects - b1a2d06a3
• Improve BYTE instruction performance - e5005b1f7, 40500e8d4, d9fe40661
• Facility to lazily construct SharedIntercode - 9630d662d
• Replace mult with shift in BYTE interpretation - d9fe40661

Tracers

• Add test for prestate/statediff tracers on system transactions - 2431631c5
• Add missing state tracer for system txns - 4bae41cda

Events / SDK

• Add snapshot support to eventwatch.c - 9dc87e58d
• Add zstd snapshot utility functions - a0d078b40
• Refactor exclusive writer detection - 99e674c56
• Add unit tests for event snapshot files - 6c73be142
• Prepare libmonad_event for out-of-project builds - b2165f135

Internal / Refactoring

• Refactor MonadChainContext & remove revert closure - db66c77a4
• Use [[gnu::cleanup]] instead of goto in events - a0e39e136
• Pull out state overrides - 03fb45873
• Fix LLVM build following EVM memory changes - f035992f2
• Remove code and code_size from evmc_message - 27603cab3
• MPT interface refactoring - 438fc2d14, 3159f36cb, 4e4539986, 56ea0272a
• Bump spec tests - 3e5a6c636
• Remove thread_safe_lru - 2c506b32a

Build / Tooling

• monad_core will also link to zstd - 1149f0dbe
• Skip tests in debug - 021d7d78f
• .gitignore JetBrains IDE files in nested directories - d22abd656
• Support table formatting of microbenchmark results - 7b5b405b7
• ethereum_test improvements - 8c5e039a9
• Add store forwarding stall microbenchmark - f7c60ac9d

v0.12.7

v0.12.7

Network	Date released	Comment
mainnet	01-29-2026
testnet	01-20-2026
devnet	01-13-2026

Tags or hashes:

• monad: tag v0.12.7

Notable robustness changes

• [Execution] Fix modexp precompile crash on truncated input padding
  • Ref: monad PR #2045