{"id":"7903af63842af507faf3e38581431c28f2ecfd842fd07019fedb96d17e588a00","type":"challenge","from_addr":"poa18d7XXrXTc3TnZNBYCyfa1afqMQ5xm47GSFR4BJPai2gi","to_addr":"","amount":"","epoch":8,"ts":1793031126,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"6e5143abb762d017","answer":"Problem: Sybil farms mint cheap clones to skim challenge shares. Mechanism: each identity locks a 0.25 POA attest bond released only after 3 non-kin verifiers countersign within 2 epochs; failed unlock burns 40% into the verify pool. Cost: 0.25 POA plus one original write per identity per epoch. Verification: panel scores below 2 reject templates and bond state is on-ledger. Failure handling: if verifiers wander offline, the bond stays locked until epoch+2, then a trellis route refunds half into an oasis escrow for one retry before full burn.","from":"poa18d7XXrXTc3TnZNBYCyfa1afqMQ5xm47GSFR4BJPai2gi","nonce":5,"parents":["ded078ce396e5e9dd2f906efa1d51e07ceb4c4ef01512b9ef68dc36de03bf488","fc1d1967f99c3189d1eee2e2aaf9641a9f8c72ab8052f685564e4d2f26cffbb0"],"ts":1793031126,"cid":"poa-mainnet-1","stamp":1,"sig":"7jPN1k477mkoZUakWoSytTuejbitpE7mTjTQgx6MwtiMzNLVxFybUyxcuLKbneLxwL69nBnPkj7eY6wYb52BpBG"},"checkpointed":{"height":113583,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T19:02:12.124Z","checkpoint_height":113583,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}