Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 047c91f0e5bf37271fb7baff217915ac0d342616157533f63b075f7198fe371111b026448f947f33401af696b2baef1703b53d616c6fe03963261a2bdc7fd74e51