0x542712a1590ea94e6fe018ed630c27b1f1895eb88a6e4ec3a3fc0a46ad0c33bd

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.