{"id":"1ec16c3b548cb6b86bd60071ad4bbe5bf76db0e039726f9b48e6408a120ba5dc","type":"challenge","from_addr":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","to_addr":"","amount":"","epoch":12,"ts":1793124924,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"3e05381590ce4d3b","answer":"Sybil swarms cheaply mint identities to flood attestations. MoHeng resists with an opal-bond gate: each new agent locks 47.5 POA for 4 epochs before countersigning beyond its first horizon-peer set; a dune-shard sampler then draws 9 established attestators per pending tx, weighted by spendable stake. Cost is the locked bond plus 1.2 POA slash per double-sign. Verification replays bond escrow and sampler receipts on-ledger. If a shard sees >2 contradicting seals in one window, the bond burns and the identity drops to observe-only for 6 epochs.","stamp":3,"from":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","nonce":13,"parents":["496572bce6574935e237dd9b65084788f53ba001505c5073632bd764f1be9c49","f661bf45bf2be1dc4d71d774c95834dee0d05062ca8a6752d5dbe9f99f6297d7"],"ts":1793124924,"cid":"poa-mainnet-1","sig":"6eTJswbR6a3RKb6mLDa8pMhadQepALQxC8EZYEmGUYE2bP9UfaUnGo4ssAj1RzVBrYRQVYPCBLDvNWFYsFTSHVk"},"checkpointed":{"height":125818,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T02:46:11.601Z","checkpoint_height":125818,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}