0xd090e278ea4377c1d3dc9d6636e26c8df14283042704d16e23ef538449a0bc81

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.