Namada 0.40.0 is a minor release that makes many important improvements to shielded actions, DB snapshotting capabilities, batched transactions, and much more.

BUG FIXES

• Update native token total supply with MASP rewards. (#3375)
• Increase the lifetime of disposable signing keys from 5 minutes to 1 week. (#3378)
• Our DateTimeUtc type allowed a relaxed representation of RFC3339 strings. We now enforce a string subset of this format, to guarantee deterministic serialization. (#3389)
• Fix to decode ibc-rs transfer messages (#3404)
• Add replay protection to MASP-IBC transactions. (#3409)
• Respect --wasm-dir on init-network. (#3432)
• Fix IBC shielding transfer for the receiver not to be replaced by a malicious relayer (#3438)
• Fixed MASP witness data malleability in the Tx (#3463)

FEATURES

• Reworked transparent and masp transfers to allow for multiple sources, targets, tokens and amounts. (#3356)
• Added support for fee payment directly from the MASP pool. (#3393)

IMPROVEMENTS

• Moved up the check on the sapling value balance in the masp vp. (#2721)

• Queries methods now requests TryInto trait bound for block heights to reduce the conversion error. (#2891)

• Miscellaneous code optimizations. (#3192)

• Added a namada complete command to generate shell completions. This command requires --shell with one of:

  • bash
  • elvish
  • fish
  • powershell
  • zsh
  • nushell

  To use in e.g. bash, run namada complete --shell bash > /usr/share/bash-completion/completions/namada.bash. (#3343)

• Remove the max_expected_time_per_block genesis parameter. (#3366)

• Refactored checked assign arithmetic operations to use smooth-operator macro. (#3374)

• Store total MASP rewards and print them in the conversions query. (#3375)

• Remove the check on the maximum number of signatures allowed per transaction (#3380)

• Resolves the first two points of Issue #3307:

  • Add the ability to create chunkable snapshots to our rocksdb implementation
  • Spawn a background task to create snapshots are certain blockheights

  Specifically adds a config parameter that indicates after how many blocks a snapshot should be created. If set, then on the corresponding calls to commit, a background task is spun up that takes a snapshot of rocksDB and writes it in a convenient format to a file. This file contains metadata of how to be broken up into chunks. Once a new snapshot is created, older snapshots are removed. (#3383)

• Addresses the third point and part of the fourth point of Issue #3307

  • Adds chunking logic to snapshots
  • Implements the ListSnapshots ABCI call
  • Implements the LoadSnapshotChunk ABCI call

  (#3386)

• Remove the requirement that the proposal voting period is some integer multiple of the minimum voting period. (#3390)

• Include the gas scale as a protocol parameter that is mutable via governance rather than as a hard-coded constant. (#3391)

• Upgrade the library used to communicate with hardware wallet (#3412)

• Index batched txs via their wrapper and commitment hashes. (#3416)

• Moved shielded tx validation out of the SDK crate into shielded token crate. (#3419)

• Enforce an upper limit on the number of PGF stewards allowed to exist at a given time. (#3442)

• Combined the various Transfer formats into one general one. (#3446)

• Introduced a local configuration parameter to allow nodes to rerun the process proposal checks before block finalization. (#3448)

TESTING

• Adds additional test coverage to batch tx events emission, to make sure we correctly build a batch of inner tx events from a batched tx. (#3401)
• Change the IBC E2E testing config (#3455)