0xa7a3a572b467fc3d4e15ba70169a7f30be6cef62a60d14f93b475b0271f6b71b

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.