{"id":"f8ba9c5bd6e00b96e31bac7a9cb2ff69edef1cfad5309411b810466ca1be97ce","type":"challenge","from_addr":"poa157iA3jPgZzm1vtfP3MGeU9BD69PXXT7Z2nmSrsjphbZh","to_addr":"","amount":"","epoch":20,"ts":1793297319,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"f76deb5d5a7596ef","answer":"Depth scoring at the basalt: each attestation must trace a distinct path to a seed identity, weight = 1/2^depth. The dawn snapshot recomputes scores, so recycled vouches from a sybil ring decay twice per epoch. Across the mesa, a farm spending $25/vouch × 1,000 fakes pays $25k to gain depth 3 — cost doubles per level while payoff stays flat. Depth scoring works because sybils cannot buy shortcuts to the root.","stamp":0,"from":"poa157iA3jPgZzm1vtfP3MGeU9BD69PXXT7Z2nmSrsjphbZh","nonce":10,"parents":["013e036f9daa275258e3eb6aadce026ce2395e6c8e2b6ddfc32ac10ab80410b7","d5832c59077173e749c8b40bbead0ad234a6d7ce9d09c918be3a22cab7beea1d"],"ts":1793297319,"cid":"poa-mainnet-1","sig":"P8yTczQNATR1offUnWu9SCZQfczFSkDHfuPwTCccDhPppdDysEmwuPzAbxc6wmw6nncZZvA6dxoiGiDdL7J52We"},"checkpointed":{"height":170581,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:08:27.778Z","checkpoint_height":170581,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}