Modular security infrastructure for Solana financial flows.

// sirius-integrators · create escrow + sign 84-byte voucher offline
import { AnchorProvider, Program, BN } from "@coral-xyz/anchor";
import { Connection, PublicKey } from "@solana/web3.js";
import nacl from "tweetnacl";
import { Buffer } from "buffer";
import idl from "./mora_idl.json";

// Prerequisites: wallet (AnchorWallet), bob (payee PublicKey),
// keypair (payer, air-gapped), totalLamports (bigint),
// nonceBuffer / amountBuffer / payee (PublicKey) — see docs for details.

const MORA_PROGRAM_ID = new PublicKey("9fcXHD3pHDKLX79JuVgCEKQiqYkvVqFtpoAEVjBq4aJ8");
const connection = new Connection("https://api.devnet.solana.com");
const provider = new AnchorProvider(connection, wallet, {});
const program = new Program(idl, MORA_PROGRAM_ID, provider);

// 1) Lock SOL into escrow PDA — internet required only once
const seed = Date.now();
const seedBuffer = Buffer.alloc(8);
seedBuffer.writeBigUInt64LE(BigInt(seed));
const [escrow] = PublicKey.findProgramAddressSync(
  [wallet.publicKey.toBuffer(), seedBuffer], MORA_PROGRAM_ID);

await program.methods
  .createEscrow(new BN(totalLamports.toString()))
  .accounts({ payer: wallet.publicKey, escrow })
  .rpc();

// 2) Sign 84-byte voucher offline — no RPC call needed
// Format: "MORA"(4) | escrow(32) | nonce(8) | payee(32) | amount(8)
const msg = Buffer.concat([Buffer.from("MORA"), escrow.toBuffer(),
  nonceBuffer, payee.toBuffer(), amountBuffer]);
const sig = nacl.sign.detached(msg, keypair.secretKey);

// 3) Bob settles — Ed25519 native verify + on-chain transfer
await program.methods
  .settle(Buffer.from(sig))
  .accounts({ settler: bob.publicKey, escrow })
  .rpc();