Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04167993f6c9dd5cc14479d803e6e2c1d863369d8d84e8b8f3a5409bf7c75717a40015748b51292c0b0e1da2a8115a866dd041677407285c4ba234cd24507bbd0b