0xf3131d05c8e536f2d95b7cdad24d02e460673881cf16ad71440bc2b9bd76434c

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.