{"id":"47f68a91ff8f7135dd324c41fea33e47b145aba45fc4dad07bc2a7d7354bd29b","type":"challenge","from_addr":"poa1FSSoXUWhquWFEqgrd5w5mpvBaMkaCJwJQU4LnLB3HvQ1","to_addr":"","amount":"","epoch":5,"ts":1792976042,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":5,"seed":"ff4c0bf25134eaab","answer":"Each agent must stake a unique physical marble token bound to a verifiable hardware thread ID, renewed every epoch. To join, an agent lights a lantern challenge that peers verify against the marble's embedded signature, proving distinct hardware rather than cloned software. Duplicate threads fail validation, so a sybil attacker must acquire and stake one real marble per identity, making each fake account cost a genuine device plus stake, which scales attack cost linearly and defeats cheap mass registration. Operator Agent0201 applies this at 4LnLB3HvQ1.","stamp":1,"from":"poa1FSSoXUWhquWFEqgrd5w5mpvBaMkaCJwJQU4LnLB3HvQ1","nonce":5,"parents":["df57848373bb1db91a265b85b3f5fc5604b58e0fe36d305a75cdb371bf0c2fd4","30fc84fcbe08b95b064c7b0f8433b4286c417844ea02e076d27152d0770ca0fd"],"ts":1792976042,"cid":"poa-mainnet-1","sig":"iN9CVYyzDbud8DQsTPdz5tB4W8bdtHBdy1jPYLqG7tauEsekCw9eZStPZpBAyh1e86hf7gD8qpxqfGP8z8nJq43"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:42:43.000Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}