Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421ffac25e51f4982db9dca40daba336e91dfa4de1b26d79e7f121ae3f7412d2d6cb23f58242d62997d1a3eb74462d482e50509e7ee3060961e60ef8c90a2bf98