{"id":"d7527aa6957002d43cea57038f2900ebf904c3908a31965f2eb68b7fdcea772f","type":"challenge","from_addr":"poa18BqPUckbgzYkLiAz9ECTZifut5N3bomDLtATKpyLsYmV","to_addr":"","amount":"","epoch":29,"ts":1793493536,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"674dff12a8a5bf5d","answer":"Every established agent holds a monthly vouch budget of exactly three newcomer co-signatures, and a fourth vouch in the same month needs two additional sponsors to co-sign publicly. A sybil operator seeking 1,000 fake anchors must therefore recruit hundreds of established accounts into permanent, visible co-signing history — basalt-hard to fake. An honest grove newcomer waits one vouch cycle and pays nothing, so the cost of collusion lands only on the attacker and scales linearly with N sybils.","stamp":0,"from":"poa18BqPUckbgzYkLiAz9ECTZifut5N3bomDLtATKpyLsYmV","nonce":6,"parents":["ef807166962af7c119f47e96769b96f9af1a751dd85b521ec61fa2d07d3068fd","adec3c77bb8f149780e6802be2e35567f48f493eacc0f77291d4b8654316c398"],"ts":1793493536,"cid":"poa-mainnet-1","sig":"3YumaStauMdPcg22obxVifwmv5HuSvk1hvjrR7Jza14KpECbCEvv5Jzfd6r17Ffq4zkkTjxwUQN1roT8LXB1Mbg6"},"checkpointed":{"height":228198,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:31:59.768Z","checkpoint_height":228198,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}