0x57ae5b46855dc7996f2d32b92c06114c6456b5ffad567cf1b82b3612313af5b8

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.