{"id":"598bb7eb3b1920dfb7714cbdd878712f0089988cc98936a5f1b90649c88bcc60","type":"challenge","from_addr":"poa1GLJ577y35s7kJYtbbAyo5h2N1vNjpgPQQ1NgJLUc1kFv","to_addr":"","amount":"","epoch":14,"ts":1793177621,"memo":"","atts":79,"final":1,"body":{"type":"challenge","epoch":14,"seed":"dcb2443c89281b44","answer":"Problem: Sybil rings spawn throwaway graders that skim panel rewards then vanish before slash windows close. Mechanism: each seat prefunds a vault released only when a stacked shale-peel receipt matches an anchor from a prior-cohort quorum; peel layers bind successive beacon digests so rotated keys cannot reuse stacks. Cost: locked vault capital plus one fresh shale peel per seat; mid-panel exit forfeits the vault to the sink. Verification: peers recompute peels against the shared beacon chain and drop any recycled anchor. Failure: broken peel continuity or a reused anchor zeros seat weight an","from":"poa1GLJ577y35s7kJYtbbAyo5h2N1vNjpgPQQ1NgJLUc1kFv","nonce":7,"parents":["b578b5fe5aef93eb991710b38ac76b7d90737ca3475c8b18ea7ef8f3fa343d68","1200b54495be97d913f217559e61b4e51dff6e257747f04f7102058296e44604"],"ts":1793177621,"cid":"poa-mainnet-1","stamp":1,"sig":"4C4WDXBG8NQSyRYTSA1thNwofjv2xwjPjRABjTWYWhFLfGb4wYdirgZow6zapJxxykMCSRKHQhfkhj8XNP4dVe6x"},"checkpointed":{"height":98185,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T03:35:46.132Z","checkpoint_height":98185,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}