0x455c7b0e3da5ddebe6d53c4493a8168b133a966c5c433d37ff4bf86d86db1f35

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.