Zebra 1.0.0-rc.5

Zebra 1.0.0-rc.5 - 2023-02-23

This release:

• finishes the implementation of mining-related RPCs;
• makes Zebra ready for testing and initial adoption by mining pools;
• adds support for the latest version of lightwalletd;
• makes non-finalized chain forks instant;
• contains other improvements such as deduplication of RedPallas code.

Zebra now also checks that it is following the consensus chain each time it
starts up.

Security

• Check that Zebra's state contains the consensus chain each time it starts up.
  This implements the "settled network upgrade" consensus rule using all of
  Zebra's checkpoints
  (#6163).

  User action required:

  • If your config is based on an old version of Zebra, or you have manually
    edited it, make sure consensus.checkpoint_sync = true. This option has
    been true by default since March 2022.

• Bump hyper from 0.14.23 to 0.14.24, fixing a denial of service risk (#6094)

• Re-verify transactions that were verified at a different tip height (#6154)

• Fix minute-long delays in block verification after a chain fork (#6122)

Deprecated

• The consensus.checkpoint_sync config in zebrad.toml is deprecated. It might be ignored or
  removed in a future release. (#6163)

Added

• Log a cute message for blocks that were mined by Zebra (off by default) (#6098)
• Add extra getblock RPC fields used by some mining pools (#6097)
• Get details from transaction differences in getrawmempool RPC (#6035)

New RPCs

• Implement the z_listunifiedreceivers RPC (#6171)
• Implement the getblocksubsidy RPC (#6032)
• Implement the validateaddress RPC (#6086)
• Implement the z_validateaddress RPC (#6185)
• Implement the getdifficulty RPC (#6099)

Documentation

• Add detailed testnet mining docs to the Zebra repository (#6201)
• Add mining instructions to the zebra book (#6199)

Changed

• Use reddsa crate and remove duplicated RedPallas code (#6013)
• Upgrade to the zcash_primitives 0.10 API (#6087)
• Simplify getdifficulty RPC implementation (#6105)

Fixed

• Change error format in proposals (#6044)
• Fix lightwalletd instructions to be compatible with Zebra (#6088)
• Downgrade owo-colors from 3.6.0 to 3.5.0 (#6203)
• Make RPC "incorrect parameters" error code match zcashd (#6066)
• Make the verbosity argument optional in the getblock RPC (#6092)
• Increase legacy chain limit to 100,000 (#6053)

Contributors

Thank you to everyone who contributed to this release, we couldn't make Zebra
without you: @arya2, @conradoplg, @gustavovalverde,
@jackgavigan, @oxarbitrage, @sandakersmann, @teor2345 and @upbqdn