Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04187ff021b9f42c77e457018257e645f82913a4ed134d0fe8e66c9b0ad867e2189c67249520100dae8f847cde6ce612729c8f445897cf3fde1f6c4ffbe3d430dc