Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0487400c4cc6d36cef4ea44b606c9b2447cda13fc2d554ed42b5e28f7259251cfdefaf5b68b503c1d69a278f53d213fb27c5a2ce53b1d95119c064974ddcde7e39