0x28f2fc1a669b711ca253bcb8512086a39ae7fad67f7f58d81178a911a12654cd

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.