0xb1ec39a7a542f0dbe3ebe413c7373aa693f0c48646c3ea7812112549e98bd948

How to verify this batch yourself

Take any stamp's content hash, walk the merkle proof in its certificate to recompute the root, then call timestamps(root) on the BA Stamper contract on any Polygon full node. The block timestamp returned is the on-chain proof — no trust in BA Stamp required.