0x70785cd8595a68b49d4788b8ea2ff2e260ec8b206a57e36e872f678a17c4b4b9

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.