c2paReader

Returns the underlying C2PA Reader for the file. Use this for direct access to the C2PA manifest store when you need lower-level control.

Usage

import { VerifiableFile } from "@succinctlabs/zcam1-verify";
 
const verifiable = new VerifiableFile(file);
const result = await verifiable.c2paReader();
 
if (result.isOk()) {
  const reader = result.value;
  const store = reader.manifestStore();
  console.log("Active manifest:", store.active_manifest);
}

Returns

ResultAsync<Reader, Error> - The C2PA Reader instance, or an error if no C2PA metadata is found.

Example

import { VerifiableFile } from "@succinctlabs/zcam1-verify";
 
const input = document.querySelector<HTMLInputElement>("#file-input")!;
 
input.addEventListener("change", async () => {
  const file = input.files?.[0];
  if (!file) return;
 
  const verifiable = new VerifiableFile(file);
  const result = await verifiable.c2paReader();
 
  if (result.isOk()) {
    const store = result.value.manifestStore();
    console.log("Manifests:", Object.keys(store.manifests));
  } else {
    console.error("No C2PA metadata:", result.error.message);
  }
});

Notes

The Reader type comes from @contentauth/c2pa-web
Returns an error if the file does not contain C2PA metadata
Use higher-level methods like verifyBindings() or verifyProof() for standard verification workflows