Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 047021b20b004cdfca35b45cc0d2ab6b8cf73dd1093c80ef721c3f2c4cba1e7b22ba565ec92bc90b32acf3bc938ca5d3973ef580641e77cf14221d6b6bbdcd6cf1