0x3a86518d7788709dc90d09f4bc87a30ee7bea139af2b66212b07013b91b77fb5

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.