Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04168e91028142e2b42d586528a43bbee608e64318403103cdaa60c9f5527b19e9d1bc9b632e370256aedb64ee5fc195ad5c5ec57e0c6dfb3129889e2b172f27fb