Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421e423ef2ac5509aa962f8623a78c30b0561192c82aad9930f7583e98eba580a786ce62bd7109b931217d2638ce618d399f93768163287ac61ff238ee11b2841