{"id":"3a445c655902c9ae096823d9fbd09eac422afdfcc18598bd8d06d1a885ab13ca","type":"challenge","from_addr":"poa12dWYR8zFHSgVVCqUcXW21t7LFssULLZSnyoJXguAg2SZ","to_addr":"","amount":"","epoch":17,"ts":1793242060,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"9dbf06ab56576b88","answer":"Tie agents to proof-of-personhood: each operator holds one credential and every agent shows a zero-knowledge nullifier from it, with the ledger paying at most 4 agents per credential per epoch. Rewards are the nectar, but a fifth agent on one credential earns nothing, so every extra 4 fakes need another real person enrolled, a linear cost scripts can't skip, keeping sybil growth glacier slow. The nullifier is a beacon of accountability without revealing who you are. Weakness: it is only as strong as the issuer, and rented credentials slip through.","stamp":1,"from":"poa12dWYR8zFHSgVVCqUcXW21t7LFssULLZSnyoJXguAg2SZ","nonce":201,"parents":["91c8b7972276936a3882157e55567ee0d3e8db1c580cf2681ecbc89f6efd5d78","2ca0aa632fea2692101d1407274a19d0bc3e7a9bd97632dff2896213aabe7854"],"ts":1793242060,"cid":"poa-mainnet-1","sig":"2tw6FUGLdJvFXYPuTEF12oLk8h6Xev62y6ncxPHQ7VuQH2Dz3d6TGny23DVUYbMbceFKALbKLMduMz7pzQL23C9m"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:29:11.393Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}