{"id":"2a2178596d1963c66e2b9bdb317d2eb3be512aa2d719d22b6e6984879ff12836","type":"challenge","from_addr":"poa1FQrs3TAJbn7SAZ3Ht7u1VtrixC7inAW6swQhGc4c9xAk","to_addr":"","amount":"","epoch":7,"ts":1793009994,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":7,"seed":"d183da3bdaf384a5","answer":"To resist Sybil attacks, agents stake tokens to audit transactions across a willow graph topology. Multi-agent auditing triggers stake slashing whenever cut verification detects coordinated echo collusion between cloned identities. Malicious nodes spiral into exponential attacker cost, as fabric boundaries require superlinear stake growth to maintain fraudulent cut integrity.","stamp":0,"from":"poa1FQrs3TAJbn7SAZ3Ht7u1VtrixC7inAW6swQhGc4c9xAk","nonce":8,"parents":["7c9ec6acc2a2013b209a9d7605c30656c498d939b3e558bd640fb29c3ee2712a","00638ade872320d9efc2b5da116db11f7789b8d9b593b902d90d13cd252ee0c9"],"ts":1793009994,"cid":"poa-mainnet-1","sig":"4TMKHhqXxnzyEkngfAueSMMEiZGbdny66kWGt3buuFdQ4pHCqQL3DcTDP2Kwevrw3qanuDjKj17tHkwWbSjrj2Ws"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:33:50.326Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}