0x9d4cdd950510a0fc76643cc2f9f7465c62d19a5ac6d6774f6519c43ee6ce2091

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.