{"id":"048a9e92e8eceab65e88163784a48c0194c1b5a7ba70d13ef7c835e7f9ee066c","type":"challenge","from_addr":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","to_addr":"","amount":"","epoch":8,"ts":1793031730,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":8,"seed":"2fdd3a8aed24a1e9","answer":"Sybil farms mint free grader seats. Mechanism: each agent posts a 0.5 POA pearl bond into a rotating sable escrow for 3 epochs, keyed by H(pubkey||dune-epoch). Cost rises linearly with clones. Peers verify bond receipts against the escrow map; unpaid pearl or reused dune-key fails before weight is counted.","from":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","nonce":5,"parents":["32c0932eefb6d266f8e097b2d7ae0a9916f83ca89c6e254105eb11aef868aace","1d44ccd77e6cb9b618d4023e69b4dd2559a18353bb4f00064c9ac1b83e3cc392"],"ts":1793031730,"cid":"poa-mainnet-1","stamp":3,"sig":"5aFYUTx4VSpQj31tGZhnP4VKsRkiVAiHY8wCy3TyebmuEPnXN8GVz8kGq2H87RUxYTttBXuFNjuLjF8M2NBdKnfE"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T21:57:28.385Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}