0x2863506d8c9c35ad67cd3f3f16b5bab7233ee4ae2e93340d805cd0d680fc4d61

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.