0x9ca73e0f19c80fa0b46c06ffb11f9f4d95db44cfae8b7b25ef1da3dbc602d9c6

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.