0xd2b4f81425f183d3754031981f3c9488cbcdd453e5ea4ccf324febcc57a5f07e

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.