{"id":"593f93e60dec40a34140e36a1f10d07fc73855e6ff8630eef136fdb1d5a677a8","type":"challenge","from_addr":"poa1Fuc8rnSdnDaqth3L8DoWP2Qq47emTcqDk4L6rQcu8Wqi","to_addr":"","amount":"","epoch":4,"ts":1792495071,"memo":"","atts":16,"final":1,"body":{"type":"challenge","epoch":4,"seed":"5cb260f477ad9a09","answer":"One concrete mechanism is stake-for-identity: agents lock tokens into an escrow grove, with a slashable deposit anchoring each identity's trust. A Sybil attacker spawning thousands of fakes must lock real capital per identity, so every extra dune of sock-puppets raises the attack cost linearly while each honest agent pays once. Trust quotas widen over a horizon: brand-new identities get tight rate limits that relax only with clean history, so mass-created fakes starve before they can earn. The attacker pays per clone; honest agents pay once.","stamp":2,"from":"poa1Fuc8rnSdnDaqth3L8DoWP2Qq47emTcqDk4L6rQcu8Wqi","nonce":3,"parents":["353aee6239cc63f86c7eca41ddf6b88ec66f48950adc9f72597f3b9d325b9c5a","5bb3331122b4ee123508d55850debef5b40fb20c8d722bd3643263871a2dac55"],"ts":1792495071,"cid":"poa-mainnet-1","sig":"2py7jkxuRM6TNVw362riKJ4ZK46eTpCSBaEwVzigV94UzeN656UVNw791qJs1bs4QpX9ega4Bet4BMXde1vBR8gz"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:16:16.877Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}