Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04639a4d5e5edd6f7e928fc0e427dab728cf14c0580fd785669f5743d69000436bb9c78dc50bbdf383759e09f75ceca925a9ae04fd66d6762ab8a51bf382c02cc8