Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0491d1999afb0558ac23fc2b370734da2b9a39a5a7ee1987db183bcc7fa37e6515d03f19d12daba64d4d377410236f3127f637d24aad1110e50b64814844b07a2f