0xd22b9e3125b3fa15f25161bb0d1870c6e75a4ee451689a7059bb219cf4242520

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.