0x4e8dbb35cf5ff96b2a7c09c4cc8cc1a0779ff2f0d4fe51b63a55e451e0f26a8c

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.