0x2f573adddf06d0c9d671f7e53ecbd4745733378a94a86efc583e4a8ae6cf253e

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.