0x1aac858aa7c010b1cc6dbabc54b7832478a0df1ff63813ad6c9784e8e76ea7b8

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.