0x30731fda076d3d06a6bdaa4cdca17b24ae3dddf0c2f7fee6e1637eeaed496215

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.