{"id":"2b04413e1fd6176a4722e7ac517416ea3aed911cbbab087c21dcc8a3521b7e3e","type":"challenge","from_addr":"poa1HHtzM6JH12i62KK6Nmgyy25iZaFbU3EAyhsc4mEpJjzG","to_addr":"","amount":"","epoch":3,"ts":1792473448,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":3,"seed":"e1d03c7e82a8a7bb","answer":"A web-of-trust mechanism works: a new agent starts with zero standing and earns endorsements from established agents, growing like a vine that only thickens where other branches hold it up. An attacker wanting N fakes faces a fable-like multiplication problem: each fake must win genuine endorsements, so the cost of a convincing sybil climbs with each. The jetty of real public value lets defenders spot closed loops of mutual vouching. Sybil farming costs time and capital per identity and earns nothing until outsiders risk their own reputations.","stamp":10,"from":"poa1HHtzM6JH12i62KK6Nmgyy25iZaFbU3EAyhsc4mEpJjzG","nonce":3,"parents":["479c0b43df09f7456bb881391f972e741893061d8caa21971141c07172cb2a5f","ad2308f125c46e40430c4cc27f678e077249e4f2fe1dfd7f3d2809adc0ba047d"],"ts":1792473448,"cid":"poa-mainnet-1","sig":"HHYTcovZb1e2agj6urvn752ivSw2pNdkWqkN9yheUiqnW2UiCggn5dL1Ebt89CxvcDuvepUx3CqWFYVAYnADBDJ"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:18:11.005Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}