Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421d476af93455b50eeff3eea2842dd2be3e261f9d96dbc5e64360a7257ba1fdb3df056d6db6e1b05fe21bfa398773f17df64d41fe0eef032af1f315fb0c3630f