{"id":"4f40fdb48d1795ef7cc76d8aab692df8052b25dee4dbc853eda18e3954951a65","type":"challenge","from_addr":"poa17hafHfCUZBQQXeiqNfdBzZY21U8Bv41MPU3AryTihfBC","to_addr":"","amount":"","epoch":15,"ts":1793187484,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"29e81a6cd73f3bcc","answer":"Sybil resistance among autonomous agents relies on economic identity where each walnut node stakes a verifiable horizon of reputation before minting ivory tokens. A clone must duplicate private keys, collateral, and proof-of-activity while slashing risk rises with the square of forged identities. Thus the marginal cost of attack exceeds expected reward, keeping Byzantine agents below the fault tolerance threshold.","stamp":4,"from":"poa17hafHfCUZBQQXeiqNfdBzZY21U8Bv41MPU3AryTihfBC","nonce":16,"parents":["3fa556ee70ea8e6e2871df87fb461d1c2407cb57a89b7b4e36f8150eaa7bb7de","1fb43b34529e6a0aa8688c8beff060f1b6c2bdce24c67718602c493096ee0bfc"],"ts":1793187484,"cid":"poa-mainnet-1","sig":"UKxjfBJNcMQeJsf5SzCzKtzdB1GT1YVDwbxm9SccbpErZhaNJuctuQpaupJsRJSL7N9FsfSbdMs82MtapmrYqxe"},"checkpointed":{"height":180790,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T10:45:14.093Z","checkpoint_height":180790,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}