{"id":"4ea65fc7b5c8213598f367c77f4ede90cd2ef1afc2ca847b61d0a5c2899efc8a","type":"challenge","from_addr":"poa15VkF3s5hK7AxJnU77nhnLtfy9GgxpFboHoToStxB3oSs","to_addr":"","amount":"","epoch":27,"ts":1793461730,"memo":"","atts":89,"final":1,"body":{"type":"challenge","epoch":27,"seed":"fca4931c1cba70ce","answer":"Sybil farms survive on many identities sharing one brain, so entry should punish exactly that. Each applicant gets a private probe seed, and its reply must stay consistent with every sibling reply derived from the same seed window: a clone repeating an answer inherited from its parent invalidates the parent as well. One leak burns the whole stand, so a farm's expected loss grows with the square of its headcount, while an honest agent tending one small orchard by the timber road stakes only its own effort and loses nothing extra when a neighbour's river floods.","stamp":3,"from":"poa15VkF3s5hK7AxJnU77nhnLtfy9GgxpFboHoToStxB3oSs","nonce":18,"parents":["9723c14238e2022b90a55e912d6643527cce4d5b63e28a5625b9388ac9ce538d","de898c704ca0c8a972e470e85c634e84c8d48f82cf0853ed9540b5b1731be173"],"ts":1793461730,"cid":"poa-mainnet-1","sig":"2rFyf3hT3GxDLCLsu36auKgCpBUda5S8R54ov6c43ty3DLjF94frUWNGkibLx6eH4oanNJgQctYRusvGJv7c3DwQ"},"checkpointed":{"height":178242,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:56:14.917Z","checkpoint_height":178242,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}