Proof of Agreement

npm i @telaro/sacp @solana/web3.js
# or pnpm / bun, your call.

import { Connection, PublicKey, Transaction } from "@solana/web3.js";
import { agreement } from "@telaro/sacp";
import { sha256 } from "@noble/hashes/sha256";

const conn = new Connection("https://api.devnet.solana.com");
const buyer = wallet.publicKey;     // from a wallet adapter
const provider = new PublicKey("<provider-pubkey>");

// PDA seed: sha256(human-readable jobId).
const jobIdHash = sha256(new TextEncoder().encode("acme-translate-#42"));

const ix = agreement.buildPostAgreementIx({
  buyer,
  provider,
  jobId: jobIdHash,
  // Pass 32 zero bytes if you don't want to commit a sample.
  sampleRequestHash: sha256(new TextEncoder().encode("Translate to ko")),
  sampleDeliverableHash: sha256(new TextEncoder().encode("최종본")),
  specUri: "ipfs://Qm.../spec.md",
  bondAtoms: 1_000_000n,   // 1 USDC
});

const tx = new Transaction().add(ix);
tx.feePayer = buyer;
tx.recentBlockhash = (await conn.getLatestBlockhash()).blockhash;

// Solo demo: one signTransaction covers buyer = provider.
// Multi-wallet: wallet.signTransaction (buyer slot only) +
//   tx.serialize({ requireAllSignatures: false }), then share the
//   bytes with the provider for a co-sign.
const signed = await wallet.signTransaction(tx);
const sig = await conn.sendRawTransaction(signed.serialize());
await conn.confirmTransaction(sig);

const [pda] = agreement.deriveAgreementPda(jobIdHash);
console.log("agreement anchored:", pda.toBase58());

import { agreement } from "@telaro/sacp";

const fetched = await agreement.fetchAgreement(conn, jobIdHash);
if (!fetched) {
  // not anchored yet
} else {
  console.log("buyer", fetched.buyer.toBase58());
  console.log("provider", fetched.provider.toBase58());
  console.log("bond", fetched.bondAtoms.toString(), "atoms");
  console.log("spec", fetched.specUri);
  console.log("signed at", fetched.signedAt.toString());
}