Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0427420887848cd5cdfa0dd718ed488f81ab73a76574a92c41060830ba3b9b0bdca5f9071cee11785b12631b1fe2c4547cf789e98ac56b742a951e79733831944f