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Transactions

Transactions are collections of instructions for the blockchain to execute.

Overview​

A transaction in BBAChain is a set of instructions that are executed atomically. If any instruction in a transaction fails, the entire transaction is rolled back.

Transaction Structure​

A transaction consists of:

  • Signatures: Cryptographic signatures from the transaction's fee payer and other required signers
  • Message: Contains the instructions, account keys, recent blockhash, and other metadata
  • Instructions: The actual operations to be performed

Transaction Lifecycle​

  1. Creation: A transaction is created with one or more instructions
  2. Signing: The transaction is signed by required signers
  3. Submission: The transaction is submitted to the network
  4. Processing: Validators process the transaction
  5. Confirmation: The transaction is confirmed and finalized

Example​

import {
  Connection,
  Keypair,
  Transaction,
  SystemProgram,
} from "@bbachain/web3.js";

const connection = new Connection("https://api-mainnet.bbachain.com");
const fromKeypair = Keypair.generate();
const toPubkey = Keypair.generate().publicKey;

const transaction = new Transaction().add(
  SystemProgram.transfer({
    fromPubkey: fromKeypair.publicKey,
    toPubkey: toPubkey,
    daltons: 1000000,
  })
);

const signature = await connection.sendTransaction(transaction, [fromKeypair]);

Transaction Fees​

Every transaction in BBAChain requires a fee paid in BBA. The fee is deducted from the transaction's fee payer account.

Commitment Levels​

BBAChain provides different commitment levels for transaction confirmation:

  • Processed: Transaction has been included in a block
  • Confirmed: Transaction has been confirmed by the cluster
  • Finalized: Transaction has been finalized and cannot be rolled back

Next Steps​