0x81ccc755c4b8ac17f027a63dd4aa1d9c01d572739636f1c28fa45cceeefa2390

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.