[ysaxyz]

Summary

• Hivezilla getBlock requests now advertise maxSupportedTransactionVersion: 1, so a slot that contains a version 1 transaction is returned instead of JSON-RPC -32015.
• The shared transaction decoder reads a SIMD-0385 transaction with the version byte 0x81 first and the signatures last. Legacy and v0 transactions still use the signature prefix.
• Helius getBlock uses the same config as the Hivezilla RPC backfill.

Tests

JSON files were produced with getBlock on the testnet validator (agave-ui, user sol). The first run, while the client still advertised version 0, failed for slots 449671366–449671368 with JSON-RPC -32015. After the fix, the same command wrote slots 449673070–449673072 under /home/sol/blockzilla/data/rpc-canary/repair/rpc-get-block/.

cd /home/sol/blockzilla
SLOT=$(python3 -c 'import json,urllib.request
body=json.dumps({"jsonrpc":"2.0","id":1,"method":"getSlot","params":[{"commitment":"finalized"}]}).encode()
req=urllib.request.Request("http://127.0.0.1:8899", data=body, headers={"Content-Type":"application/json"})
print(json.load(urllib.request.urlopen(req, timeout=20))["result"])')
START=$((SLOT-2))
./target/debug/hivezilla backfill-rpc \
  --rpc-url http://127.0.0.1:8899 \
  --archive-dir /home/sol/blockzilla/data/rpc-canary \
  --start-slot "$START" \
  --end-slot "$SLOT" \
  --commitment finalized

Those JSON files were then decoded locally: 204 transactions, 105 legacy, 99 version 1.

cd /home/sol/decode-rpc-block
RUSTFLAGS="-C target-feature=+aes,+sse2" cargo run --quiet

Signatures on the same files: 225 verified.

cd /home/sol/decode-rpc-block
cargo run --bin verify

Decoder unit tests: 8 passed.

cd /home/sol/blockzilla
RUSTFLAGS="-C target-feature=+aes,+sse2" \
  cargo test --locked -p of-car-reader --lib versioned_transaction -- --test-threads=8