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smom-dbis-138/services/token-aggregation/scripts/omnl-attestation-payload.mjs
defiQUG f3d2961b97
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feat: add hybx omnl stack and gas pmm tooling
2026-04-24 12:56:40 -07:00

23 lines
898 B
JavaScript

#!/usr/bin/env node
/**
* Preview digest for off-chain attestation signing (fiat / XAU custodian flow).
* Uses keccak256(abi.encode(lineId, R, nonce, validUntil, evidenceKind)) — align with ops before HSM.
* Usage: node omnl-attestation-payload.mjs <lineId0x> <R> <nonce> <validUntil> <evidenceKind>
*/
import { keccak256, AbiCoder } from 'ethers';
const [, , lineId, R, nonce, validUntil, evidenceKind] = process.argv;
if (!evidenceKind) {
console.error(
'Usage: omnl-attestation-payload.mjs <lineId0x> <R> <nonce> <validUntil> <evidenceKind>'
);
process.exit(1);
}
const coder = AbiCoder.defaultAbiCoder();
const encoded = coder.encode(
['bytes32', 'uint256', 'uint256', 'uint256', 'string'],
[lineId, BigInt(R), BigInt(nonce), BigInt(validUntil), evidenceKind]
);
const digest = keccak256(encoded);
process.stdout.write(JSON.stringify({ digest, encoded }, null, 2) + '\n');