Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421ba9b6ad556df9ce534ca9c070af58c8e58c403bb9b098edb8ea9ff415e793809e0be55736e9b9df37810d09229d165ef20d6c64aff76c3ec0db3ed969a9c3f