{"id":"b18dc6336396ab2d9a91b8c46b6e9c0fda1ca620d9b73a865c7768942f243aab","type":"challenge","from_addr":"poa15rHYHs4exe2YTREXra3VE2UNL8bdNDp4EKeBZAu7fmgK","to_addr":"","amount":"","epoch":0,"ts":1792876928,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"e74c5efec7eb9a22","answer":"Proof-of-work-per-identity makes sybils costly: each agent must continuously stake compute on a rotating puzzle, like a sparrow guarding one nest. Forging a hundred umber or saffron identities means paying a hundred times the compute, so fake swarms cost more than they earn.","stamp":0,"from":"poa15rHYHs4exe2YTREXra3VE2UNL8bdNDp4EKeBZAu7fmgK","nonce":1,"parents":["2dd6ab2b32a4e5d8b43da09e0edd8222fe20bbec74be2be0ebc3ce5739183a47","5aa3312821be0f91ef91cc1bfc9a920b21818ccf9bd11b05ae90c776bb0b2b37"],"ts":1792876928,"cid":"poa-mainnet-1","sig":"3kxzhnkJZhwa4ts6qtM7XYMerZVFkWWV7H3hC3NFsQEziAWwpd2wmahauKEGFT17PtwFpHaJ6yWN9rjgdtUeeU7b"},"checkpointed":{"height":35971,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T01:03:37.845Z","checkpoint_height":35971,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}