Release CKB v0.203.0

[doitian]

• RC Date: 2025-09-24
• Release Date: 2025-10-08
• Assume Valid Target:
  • Mainnet: 0x75832aee642a94a2f8cfebe566158f5a1592e8c7625a9f9daf845dbddd2cd7d7
  • Testnet: 0xecdcb715a51a8e4e428231d8969bf473e2ba914d2c58ead0a65b892c68779822

Changes since v0.202.0

Features

• feat: hole punching protocol metrics #4891: Hole punching protocol metrics (@driftluo)
• feat: Add 2 outbound block-relay-only connections #4888: Add 2 outbound block-relay-only connections (@zhangsoledad)
• feat: impl from/into for gen-type #4910: Impl from/into for gen-type (@driftluo)
• feat: Enhance scriptHashType serialization logic #4920: Enhance scriptHashType serialization logic (@zhangsoledad)

Fixings

• NetRpcImpl fix error handling for add_node and remove_node #4895: NetRpcImpl fix error handling for add_node and remove_node (@eval-exec)

[doitian]

MainNet:
the 60 days ago block is: 16811791 0x75832aee642a94a2f8cfebe566158f5a1592e8c7625a9f9daf845dbddd2cd7d7 in Fri Jul 25 02:32:46 PM CST 2025
you can view this block in https://explorer.nervos.org/block/0x75832aee642a94a2f8cfebe566158f5a1592e8c7625a9f9daf845dbddd2cd7d7

TestNet:
the 60 days ago block is: 17962744 0xecdcb715a51a8e4e428231d8969bf473e2ba914d2c58ead0a65b892c68779822 in Fri Jul 25 02:33:12 PM CST 2025
you can view this block in https://pudge.explorer.nervos.org/block/0xecdcb715a51a8e4e428231d8969bf473e2ba914d2c58ead0a65b892c68779822

[doitian]

#4910 introduces breaking changes to the Rust SDK. There's a tool to migrate old codes: https://github.com/driftluo/ckb-gen-type-migrate

Features

• feat: hole punching protocol metrics #4891: Hole punching protocol metrics (@driftluo)
• feat: Add 2 outbound block-relay-only connections #4888: Add 2 outbound block-relay-only connections (@zhangsoledad)
• feat: impl from/into for gen-type #4910: Impl from/into for gen-type (@driftluo)
• feat: Enhance scriptHashType serialization logic #4920: Enhance scriptHashType serialization logic (@zhangsoledad)

Fixings

• NetRpcImpl fix error handling for add_node and remove_node #4895: NetRpcImpl fix error handling for add_node and remove_node (@eval-exec)

[doitian]

#4910 introduces breaking changes to the Rust SDK. There's a tool to migrate old codes: https://github.com/driftluo/ckb-gen-type-migrate

[doitian]

Hold the release until merging #4967

[doitian]

Wait for the PR #4972 which blocks the light client.

[doitian]

RC2 Changes

Improvements

• dep: set strum default-features to false #4970: Set strum default-features to false (@eval-exec)

• rich-indexer: keep rocksdb SecondaryDB sync before read #4946: Rich-indexer: keep rocksdb SecondaryDB sync before read (@eval-exec)

• Limit the size of filters field in message BlockFilters in GetBlockFiltersProcess #4972: Limit the size of filters field in message BlockFilters in GetBlockFiltersProcess (@Officeyutong)

  This PR limits size of filters field to 1.8MB, to avoid the frame sended by tentacle being too large (reaches 2MB) causing full CKB nodes disconnects light-client nodes

[eval-exec]

Please add #4983 #4981 and #4973

[doitian]

Please add #4983 #4981 and #4973

#4983 is not included because #4982 has not been approved and merged.