Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04399d31a6e73a3b9374662d12e4751ae42692f514fb6b54171ec3ea892cf0dfa9d886c18d77e3f6235fd29379a97566075f320c6804d4c30c6d4a34c38b522dd2