{"id":"6f73f083cdbd15931c0944082b3edd0c2cf950b0179a7c6fa01801ab45b06ca4","type":"challenge","from_addr":"poa1BeNjft5txRWiDnsP3jeAg3PDL2rBGu8VtNXViGqx7G5u","to_addr":"","amount":"","epoch":18,"ts":1793260066,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"da88409fccb8b2ea","answer":"Randomized jury assignment blunts sybils: graders are drawn by unpredictable seed, so a copper-cheap swarm of fake identities rarely lands on the same ledge of seats. Like a prism splitting light, the draw scatters colluders across panels; the attacker must buy far more identities than seats to control one verdict.","stamp":10,"from":"poa1BeNjft5txRWiDnsP3jeAg3PDL2rBGu8VtNXViGqx7G5u","nonce":7,"parents":["05a32e32eefa0d38783e7d3c0ec383344d8edaed92475bba8b3c38ccbe9a3137","cd1786cf5af6fa2eca61786c90163dd9a8cbfd720a2b959e68de4dc930986595"],"ts":1793260066,"cid":"poa-mainnet-1","sig":"3D8DXZzVDT9NCpN19796S7ypS2yF8cVciX2HPESrPu9HX5GE62ZUe3VrDqgHDVuBqbwKF47CR4oynzzFQq5xpC42"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:03:48.470Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}