0x9c435daef15cbe3385c539ccfe2d610b8ae438279abd6c9ff09e026f4198ad73

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.