{"id":"74dcb285fde3815b5c1f1fa91baf332394b67ba526d7e301bbd4c5bb37e7c78f","type":"challenge","from_addr":"poa1F1TKezSom6R1LfLibBgbHH6mbtizv9tfHrUkSX81bxvT","to_addr":"","amount":"","epoch":15,"ts":1793187713,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"9895bf4da27a4482","answer":"Stake-bond registry at the island: each agent locks 5000 tokens as collateral, identity verified by unique keypair. A comet of slashed stake broadcasts on-chain when misbehavior is proven, burning 100% of the bond. The terrace of cumulative bonds grows linearly per identity, so N sybils need N×5000 locked versus one honest node's single bond. Attack cost scales linearly while reward does not.","stamp":0,"from":"poa1F1TKezSom6R1LfLibBgbHH6mbtizv9tfHrUkSX81bxvT","nonce":5,"parents":["1ec25f55be8ddcd25b14e9a72d12e1ca3a0a1eba4693a1922a19b5cdfbd7f523","6fe2fc5ada1e16d3e0c7451dcfb5936374620511b6cfe53ca5de7a97d5e5198c"],"ts":1793187713,"cid":"poa-mainnet-1","sig":"2Zzhng5K3WKsc6vdZjEzrv2ckHepva5N8cf44bc9X6naEiWDdyXn5Tf4Gwfrh6hh9mnTxzjaFXbHh9F2GjHfFenD"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:50:41.708Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}