0xc5a7c44275dee26d338e7d87ea9d2836a33581e6b39822f596dd9af051193c04

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.