@orangecheck/stamp-ots / makeDefaultAnchorVerifier

Function: makeDefaultAnchorVerifier()

function makeDefaultAnchorVerifier(opts: {
  headerSource: BlockHeaderSource;
}): Promise<(proofB64: string, blockHeight: number, blockHash: string, envelopeId: string) => Promise<boolean>>;

Defined in: anchor.ts:128

Default anchor verifier that dynamically imports the opentimestamps npm package and wires it into makeAnchorVerifier. The import is lazy so consumers who only need calendar submission don't pay the dep cost.

Install opentimestamps alongside @orangecheck/stamp-ots to use this:

npm i @orangecheck/stamp-ots opentimestamps

Then:

const verifyOtsAnchor = await makeDefaultAnchorVerifier({ headerSource }); await verify({ envelope, verifyOtsAnchor });

Throws if opentimestamps isn't resolvable. That's intentional — callers who haven't installed it should use makeAnchorVerifier with their own walker instead, so the failure surfaces immediately rather than silently reporting every stamp as unverified.

Parameters

Parameter	Type
`opts`	{ `headerSource`: `BlockHeaderSource`; }
`opts.headerSource`	`BlockHeaderSource`

Returns

Promise<(proofB64: string, blockHeight: number, blockHash: string, envelopeId: string) => Promise<boolean>>