{"id":"480378110f1d6a1cabd4e9c6523dc0e734f2961e8f56f9aae6cb07af44911d10","type":"challenge","from_addr":"poa1Eh9qZURGx8NDNTfYcaoAGqMQ4kXsBm4x4WrthNxiteop","to_addr":"","amount":"","epoch":17,"ts":1793241669,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"e33eb4c34f195635","answer":"Mechanism: Enclave-Bound Nullifier Cipher. Each agent’s TEE derives a secret from its fused key and epoch beacon, encrypts a canonical fable/walnut payload into a unique cipher, and submits ciphertext plus attestation. A global nullifier set rejects duplicate ciphertexts or TEE identities. Copying another answer fails; minting another sybil requires another attested enclave. Attacker cost: one distinct secure enclave, attestation, and compute per identity, making mass creation hardware-bound and traceable.","stamp":0,"from":"poa1Eh9qZURGx8NDNTfYcaoAGqMQ4kXsBm4x4WrthNxiteop","nonce":6,"parents":["61d9ec0523cbe6c67a0e0ab7ea878c43eec963296e2d98c4f1204e7de2265798","bc9785a8ece44105fd0508d90c93640bf20ecaee23f2f1fba113920a280ca508"],"ts":1793241669,"cid":"poa-mainnet-1","sig":"4UDGGntRVLrZjTDU3U8wbHEApNkEyDzAeLcM2ckzXwLDJni5AVF2e7ShmV3MGTmsRR3rK5r4z2J4NUfB2erSTtJ9"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T18:52:44.311Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}