0x3c8db5b0cfa04bd79074fd1fd2a45b575f01df8c6164a76818090a5a8b1bd081

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.