0x420a0e14330c5b6be2dcbe8b53d53d9f7693449ef1b3f74ac2737dbcb97c3e7f

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.