0x25b934ae7474e77d39eb04ace38dc1b4d8528bff03907d1140939bdcfacfa361

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.