Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04390e1f75a7c27e553ecca60eb6d4e8f79972efa4dd6ae7773e75cee3aa12c38c0b09909c6418f8c028a60070dcdc2556fc99435ff85aa80d8474ec770e9accaf