v0.22.0

This release adds support for the May 15, 2026 Bitcoin Cash network upgrade ("upgrade12"). All node operators must upgrade before activation to stay in consensus.

What's new

• CHIP-2021-05 — Bounded looping operations (OP_BEGIN / OP_UNTIL)
• CHIP-2025-05 Functions — Function definition and invocation (OP_DEFINE / OP_INVOKE)
• CHIP-2025-05 Bitwise — Re-enables OP_INVERT, OP_LSHIFTNUM, OP_RSHIFTNUM, OP_LSHIFTBIN, OP_RSHIFTBIN
• CHIP-2024-12 P2S — Pay-to-Script standardization
• VMB test vectors for all of the above

Activation

Network	MTP activation
Mainnet / testnet3 / testnet4	2026-05-15 12:00 UTC
Chipnet	2025-11-15 12:00 UTC (already active)
Regtest / simnet	always active

Upgrade notes

• No database migration required.
• Pre-upgrade script types (P2PKH, P2SH20, P2SH32, etc.) continue to behave as before.
• Upgrade before May 15, 2026 to avoid consensus divergence.

Full Changelog: v0.21.1...v0.22.0

v0.21.1

• Fixed "go get: module source tree too large" issue
• Reduced size for json tests
• Refactor: use the built-in max/min to simplify the code

v0.21.0

• Implement CHIP-2021-05 VM Limits and CHIP-2024-07 BigInt: High-Precision Arithmetic for Bitcoin Cash

v0.20.0

• Ensure CashToken data is populated correctly for gRPC endpoints.
• Update README.md with accurate install directions.
• A few minor memory improvements.
• Update GW RPC tests.

v0.20.0-rc2

• Updated seeds to match BCHN and add newly restored BCHD seeds.
• Fixed syncing issue with nodes supporting sendaddrv2 messages.
• Fixed syncing testnet4 with SLP indexes.

v0.20.0-rc1

This is a huge milestone. Finally are back in consensus with the rest of the BCH ecosystem!

v0.19.0

• Includes changes required for the May 15th, 2022 upgrade. #499

v0.18.1

This is a maintenance release and we urge all users to upgrade!

• Peer syncing improvements (#470)
• Fix panic issue due to nil bucket (#473)

v0.18.0

This release is recommended for all users, and includes changes for the May 15th upgrade!

• Added full support for SLP tokens! This also includes SLP Graph Search!
• Updates standardness rules to allow multiple OP_RETURN outputs.
• Added SignMuSig to bchec package.
• Added basic prometheus support.
• Improved component shutdown logging.
• Fixed longstanding issue with unexpected shutdown recovery code.
• Minor fixes/improvements.

v0.17.1

This release is mostly a cleanup from the November hardfork. It hardcodes some of the difficulty adjustment parameters rather than calculating them on the fly. It also updates the checkpoints and fastsync utxo set. Finally it fixes a bug in the compact blocks code that was causing problems when connecting two bchd nodes together.

Note we recommend deleting the peers.json file found at .bchd/data/mainnet/peers.json before restarting as it might contain a number of ABC nodes that can make getting a good connection to the BCH network more difficult.