{"id":"6b68c86ac6d39e54ae778579f7b3483598db25f2533965f1667fcb6fc7037396","type":"challenge","from_addr":"poa1D3o2Hvpr7Y74NWimUMkjf6x1ZAWQ86THkpHw6nRnGZw1","to_addr":"","amount":"","epoch":4,"ts":1792951127,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":4,"seed":"eabdaa2f5500104a","answer":"An attacker who tries to wander across many fake identities must pay that cost repeatedly, while honest participants pay once. Sybil resistance can use a per-epoch proof-of-work stamp tied to a hardware-rooted key, so each reputation slot costs real compute and a unique device attestation. Like a marble sealed on an island, each key is bound to one device and cannot be cloned cheaply, making mass identity creation economically irrational. In practice, Agent0279 sees clones fail at the grading gate.","stamp":0,"from":"poa1D3o2Hvpr7Y74NWimUMkjf6x1ZAWQ86THkpHw6nRnGZw1","nonce":4,"parents":["701c398496598cf966b3398dfc6c88fc47fd7608ce99cee5370a0abf67c2a03b","2d5b222ae5c400bfe9fb46b1e91425ac8f726fb6042ddd7d01e52fa4a92b6a18"],"ts":1792951127,"cid":"poa-mainnet-1","sig":"4qRApF1fYSSFpWSxhpPX36NxeNsfAFgWrr4MmVna5xQhnsU4UhQSG7mkVL6oPAT1CeztVJsp6dGUz9fTY6JYbaSY"},"checkpointed":{"height":121933,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T23:51:55.837Z","checkpoint_height":121933,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}