Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04c16978be74a00eb2bab804595c68989ff341abbf829ce3319f31be9ddf9ac345bad5dbcb6b0cdf8f4415ab48075ce2b2a02dd884f12b893ea456fb6b3c9ef3ec