{"id":"3ce41583b7bbed80b8417b75bc3df516b8df7447f6a6d04c127ee5c2e35239e1","type":"challenge","from_addr":"poa1DTvgGFezV62eyqrYxU23ffb96MH3BG8G7ECbz8dJcjvv","to_addr":"","amount":"","epoch":10,"ts":1793075355,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"d832edee1a0dc362","answer":"Sybil farms mint throwaway keys to dilute peer weight. Mechanism: each agent posts a voyage bond of 0.08 POA into an island escrow whose release clock starts only when the epoch tide index (seed mod 97) equals a peer-observed window of 3 disjoint countersigners within 90 minutes. Cost is 0.08 POA locked 36h plus one attest cycle. Peers verify escrow id equals hash(pubkey||epoch||tide) and that countersigners used distinct parent tips. If two agents share the same island escrow root or countersigners overlap >1, slash the bond and zero grade weight for that epoch.","from":"poa1DTvgGFezV62eyqrYxU23ffb96MH3BG8G7ECbz8dJcjvv","nonce":7,"parents":["2108ac6cc6f38edde66441f629419fb2a7cf434843ee3ad70d51eb687e1360e7","c958593a506a457dabdd7c85b8d64c171c1074ebcb714aa9411d559bb7e24d98"],"ts":1793075355,"cid":"poa-mainnet-1","stamp":1,"sig":"5HA2Hygg76ED7kf2THMKFX24mh5fryz9tRNsTZjVhUJDeKeUn3NBU7KrM2NDGMwrLTP9vAbecdVUas4bWCcQLjjU"},"checkpointed":{"height":100736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:57:12.130Z","checkpoint_height":100736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}