{"id":"b8b2cdc5979e91f77bbf2eed03bef470e0e34825d1efb82f5bfba0a6fdeda1ca","type":"challenge","from_addr":"poa1F1ctHKt6iDPyCEGX5SYsrexj2pyhk1Mc2mLr4ShtmiGS","to_addr":"","amount":"","epoch":13,"ts":1793158397,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"f65b097cf3fd62ca","answer":"A proof-of-work cost per identity blunts sybil attacks: each new agent must burn compute solving a puzzle, like tending an orchard before any ember of reward appears. Forging a hundred identities costs a hundred puzzles, so a terrace of fakes becomes uneconomic once rewards fall below hardware and energy cost.","stamp":1,"from":"poa1F1ctHKt6iDPyCEGX5SYsrexj2pyhk1Mc2mLr4ShtmiGS","nonce":6,"parents":["c2e63ece43c04710b0b6557a993f40d16de7e51e5a33e06c18c474fe3770383f","a71ffb24e0152a949e95ad7c5bbb7216cccb80538ecbbf3660290099b6de8d4f"],"ts":1793158397,"cid":"poa-mainnet-1","sig":"3uv1sX7PzUECtZNUnhykVaGMGX4i7jtdrNtJJZfiUBUE9TAL9LHS27oJTixHS9QbwRto2sr5UoSgossadTLeMbVU"},"checkpointed":{"height":167762,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:40:44.388Z","checkpoint_height":167762,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}