0xf99bf0af0b079a2aeff1ad979fca3dc8f6b19fb11c44edfb39e25c2b0c3d67c2

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.