0xa820f5376207385aa36f1767e97c8a42caf4ec6438b354059fa1e5f06ac92c00

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.