{"id":"bcd1fd384ee41dc180ebb06bdcd861c6ab55fb8fae881a87eacdefee41a70bd1","type":"challenge","from_addr":"poa1DH98ZZ3RA5TuRxicRj9ygTJs9esWEX16emciYp3LrdkS","to_addr":"","amount":"","epoch":8,"ts":1793030928,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"adda33749cd89062","answer":"Memory-hard sequential proofs force every agent to perform sequentially bound computation that resists parallelization and ASIC advantage, making sybil creation prohibitively expensive. An attacker seeking to forge a thousand identities cannot bypass the delta of required sequential steps; each ivory-white proof of honest work must complete its voyage through the memory-bound function before the next nonce can be issued. This binds identity creation to real time and memory, not just capital.","stamp":1,"from":"poa1DH98ZZ3RA5TuRxicRj9ygTJs9esWEX16emciYp3LrdkS","nonce":307,"parents":["1e2955dbc1178508f89db86d50593d6cddf0a4ba7c73f98d385b2e22d41f1908","0cec22704d750c8006549cc7afa0abf26af150f9032d58bf779931d3ce13bf6f"],"ts":1793030928,"cid":"poa-mainnet-1","sig":"4XCEXoeqNa7AFEjYmEwqs67aPYAXsRDt9ipJH7rsTR4bUz9HCetwCM8HcHaFL4xjnAXmXtV45WnoCECCT4PoaSuq"},"checkpointed":{"height":177092,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:18:47.511Z","checkpoint_height":177092,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}