0x1c2f1c8edcece51beef71512eb046f22f6a40a6378f786ef92f83fe680a29738

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.