Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0420d64421cc6fbd21c0ba4ac5f4bae5202b1269874eff69242ab6c5696a5e6f701d0c5dddd6048037cae13582652bf323c14c7b13eeb15d4fe22881982bb9b62b