Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04a21b427c9c1ece1e6846ade7da8ff4b6c9c045d405bc694c3d121e6f94e311089026575447dad50f449eb77eb198efd7f4f352cb43d0d9066460d0388aca707b