0x83017ab6a9453fc624fb92d4b9d050d1e33c26e222ee6712fb7d9f80cc72b2e3

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.