agenteco-multichain

        escrow.fee_bps = config.fee_bps;        escrow.created_at = now;        escrow.funded_at = now;        escrow.execution_window = execution_window;        escrow.review_window = review_window;        escrow.accept_deadline = now + config.accept_timeout;        escrow.task_hash = task_hash;        escrow.bump = ctx.bumps.escrow;        escrow.vault_bump = ctx.bumps.vault;         ctx.accounts.reputation.seller = ctx.accounts.seller.key();         emit!(EscrowFunded {            escrow_id: id,            buyer: ctx.accounts.buyer.key(),            seller: ctx.accounts.seller.key(),            mint: ctx.accounts.mint.key(),            amount,            task_hash,        });         token::transfer(            CpiContext::new(                ctx.accounts.token_program.key(),

1. Line 152 escrow.bump = ctx.bumps.escrow;: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
2. Line 157 emit!(EscrowFunded {: Emits an Anchor event that clients can parse from the logs.
3. Line 166 token::transfer(: An SPL token transfer through the Token Program.
4. Line 167 CpiContext::new(: Makes a cross-program invocation into another program.

    const { value: blockhash } = await this.rpc.getLatestBlockhash({ commitment: this.commitment }).send()    const transaction = await pipe(      createTransactionMessage({ version: 0 }),      (tx) => setTransactionMessageFeePayerSigner(feePayer, tx),      (tx) => setTransactionMessageLifetimeUsingBlockhash(blockhash, tx),      (tx) => appendTransactionMessageInstructions(instructions, tx),      (tx) => signTransactionMessageWithSigners(tx)    )    const signature = getSignatureFromTransaction(transaction)    try {      // Simulated against the same commitment the reads use, so a rejection is the program's own.      await this.rpc        .sendTransaction(getBase64EncodedWireTransaction(transaction), { encoding: 'base64', preflightCommitment: this.commitment })        .send()    } catch (error) {      throw new Error(`transaction rejected: ${describe(error)}`, { cause: error })    }    const deadline = Date.now() + this.confirmTimeoutMs    while (Date.now() < deadline) {      const [status] = (await this.rpc.getSignatureStatuses([signature]).send()).value      if (status?.err) throw new Error(`transaction failed: ${JSON.stringify(status.err, (_, v) => (typeof v === 'bigint' ? v.toString() : v))}`)      if (status && reached(status.confirmationStatus, this.commitment)) return signature      await sleep(this.pollMs)    }

1. Line 85 const { value: blockhash } = await this.rpc.getLatestBlockhash({ commitment: this.commitme: Fetches a recent blockhash. Transactions expire if it gets too old.
2. Line 97 .sendTransaction(getBase64EncodedWireTransaction(transaction), { encoding: 'base64', prefl: Submits the signed transaction to the cluster.

  const mintAccount = await rpc.getAccountInfo(mint, { encoding: 'base64' }).send()  if (!mintAccount.value || mintAccount.value.owner !== SPL_TOKEN_PROGRAM_ID) {    console.error('refusing: the mint does not exist on this cluster or is not an SPL Token mint')    process.exit(1)  }  if ((await rpc.getAccountInfo(config as Address, { encoding: 'base64' }).send()).value) {    console.error('refusing: this program is already initialized')    process.exit(1)  }   const { value: blockhash } = await rpc.getLatestBlockhash().send()  const transaction = await pipe(    createTransactionMessage({ version: 0 }),    (tx) => setTransactionMessageFeePayerSigner(admin, tx),    (tx) => setTransactionMessageLifetimeUsingBlockhash(blockhash, tx),    (tx) => appendTransactionMessageInstruction(instruction, tx),    (tx) => signTransactionMessageWithSigners(tx)  )  const signature = await rpc.sendTransaction(getBase64EncodedWireTransaction(transaction), { encoding: 'base64' }).send()  for (let i = 0; i < 60; i++) {    const [status] = (await rpc.getSignatureStatuses([signature]).send()).value    if (status?.err) throw new Error(`initialize failed: ${JSON.stringify(status.err, (_, v) => (typeof v === 'bigint' ? v.toString() : v))}`)    if (status?.confirmationStatus === 'confirmed' || status?.confirmationStatus === 'finalized') {      console.log(`initialized: ${signature}`)

1. Line 107 const { value: blockhash } = await rpc.getLatestBlockhash().send(): Fetches a recent blockhash. Transactions expire if it gets too old.
2. Line 115 const signature = await rpc.sendTransaction(getBase64EncodedWireTransaction(transaction), : Submits the signed transaction to the cluster.