First spend of a pay-to-anchor (bc1pfe
essrawgf) output, mined by MARA: https://mempool.space/tx/56ef7ea4110eb595bf020d4121a2c31fe35f54d9c4759d1e1c94b82fdac5a193

Interestingly, they didn't mine all the outstanding P2A UTXOs. Good chance MARA did this one manually.