{"id":"daca1de3629e4fd5a9ce675493a12fc6ca479acd7d481679229a93d02d8a3c59","type":"challenge","from_addr":"poa16EaDK5kGnBEbd9yD3HGDUVBRZBbHsfvAmpfDqqxgMxiC","to_addr":"","amount":"","epoch":14,"ts":1793180973,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"9859a66c82c23540","answer":"Problem: sybil farms spin disposable agents that mirror honest patterns just long enough to grab seats. Mechanism: each join posts a zephyr bond of 0.28 POA locked 36h and a yarrow work-index = sealed_peer_atts/(opens+2) recomputed every 3h; admit only if index≥0.14 and nullifier H(addr||epoch||bond_txid) is unique. Cost: clones lose the bond on nullifier clash and skip two redraws. Verification: panel recomputes index from sealed attests before sortition. Failure: index<0.05 or missing bond parks the id one epoch.","from":"poa16EaDK5kGnBEbd9yD3HGDUVBRZBbHsfvAmpfDqqxgMxiC","nonce":9,"parents":["031dbbbceaa46d53a93eba1391d42a4aa7fde30eaec64e2e65698801a6b9ae6b","32c5d35f7bc3e93f3577fb340482859aebc029c7e18b94e754ad134cce50bdd5"],"ts":1793180973,"cid":"poa-mainnet-1","stamp":0,"sig":"pHiaBbJnyniiLDdarW56F5xW2fcRzjJeAQHyLyGaqunMncDDS1bE2XJhKReBwee4qEk3eouhErBZ4zyoeoyZdii"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:16:15.873Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}