Serialization and Signing

TransactionSerializer converts in-memory transactions to Solana wire format.

Encodings

• Raw transaction bytes.
• Base64 transaction payload for sendTransaction.
• Base58 transaction payload if required by integration paths.

Example

char txBase64[2048];
if (TransactionSerializer::encodeTransaction(tx, txBase64, sizeof(txBase64))) {
  String sig = rpc.sendTransaction(String(txBase64));
  Serial.println(sig);
}

Common Pitfalls

• Missing or stale blockhash.
• Incorrect signer list for required accounts.
• Buffer too small for serialized payload.