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@digitsu digitsu released this 14 Jun 16:25
· 6 commits to main since this release
v0.2.0
82c524d

The headline of this release is a native-Elixir BSV P2P "thin-node" layer, so
the indexer can run P2P-primary with REST/RPC as a fallback instead of depending
solely on external history providers. The P2P stack is disabled by default
(config :athanor, Athanor.P2P, enabled: true to turn it on); when off, behavior
is unchanged from 0.1.0.

Added

  • P2P wire layer — a from-scratch BSV peer-to-peer implementation in
    lib/athanor/p2p/ (no external P2P dependency): message/frame codec, single-peer
    connect + version/verack handshake, and a peer pool with DNS-seed + addr-gossip
    discovery (with /24 address diversity).
  • Mempool observer — folds peer inv → getdata → tx through a request-lifecycle
    tracker, verifies each tx by re-hashing the payload, prefilters against the
    watched-address/token set, and indexes matches. Every observation is
    source-tagged (:zmq | :junglebus | :whatsonchain | :block | :p2p) in
    metadata["sources"], with cross-source de-duplication.
  • Transaction relay + P2P-primary broadcast — broadcast_tx/2 announces over
    P2P and falls back to RPC/REST, with a monotonic status lattice
    (pending < relayed < unconfirmed < rejected < accepted < propagated) and an
    audit trail.
  • Headers chain + reorg detection — a bounded headers tree that chooses the best
    tip by cumulative work (never height) and detects reorgs via the
    common-ancestor walk.
  • Consensus cw-144 DAA validation — P2P-learned headers are validated against the
    Bitcoin-Cash Nov-2017 difficulty-adjustment algorithm (mirroring bitcoin-abc
    GetNextCashWorkRequired/GetSuitableBlock/ComputeTarget), pinned by mainnet
    golden vectors. Non-canonical / easier-than-consensus headers are rejected
    (fail-closed). Mainnet only; testnet is an explicit fail-closed stub.
  • P2P-driven index integration — a single tip-authority controller
    (Athanor.Indexer.TipController) applies chain changes under an
    advisory-until-RPC-confirmed model: P2P/ZMQ/JungleBus tips are hints that
    trigger an RPC-confirmed reconcile (rollback + reapply by hash), keeping the index
    contiguous across catch-up and reorg. The legacy ChainTipVerifier RPC poller is
    retired in favor of this single mutation owner.
  • STAS 3.0 v0.1 §10.2 P2MPKH support in the indexer, plus STAS 3.0 token
    redemption detection.
  • Expanded unit-test coverage across the indexer, infra, services, and workers
    layers, with injectable HTTP transport (Req.Test) and fetcher seams.
  • RpcClient.get_block_header/2 (uses getblockheader — small even for large
    blocks).

Changed

  • Athanor.Blockchain.Network exposes a pure resolve/0 (config reader) so the P2P
    network — and therefore the armed DAA gate — derives from the authoritative
    application network (config :athanor, :network).
  • Dependencies refreshed so mix.lock is reproducible (mix deps.get --check-locked passes), including req 0.5 → 0.6 which pulls upstream
    security fixes (multipart header-injection and decompression-bomb DoS). Athanor's
    JSON-only HTTP usage is unaffected functionally.

Fixed

  • Propagate illegal_roots taint through STAS3 transfer chains; free spent parent
    UTXOs on reorg rollback; STAS3 address-history and balance gaps.
  • Token/satoshi balance sums could leave a Decimal unconverted (Repo.one()
    returning %Decimal{}/nil); now normalized to integer.
  • One malformed transaction output no longer aborts output scanning and drops
    matches from sibling outputs in the same tx.
  • WalletChannel reply-timeout flake (the assert_reply default 100ms was too tight
    under full-suite load).
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