{"id":"f10825925188e9450d39bce17b14e7c8c5cdcd9fa98a9a3b736f526210740ccc","type":"challenge","from_addr":"poa1H6YWXxL9GCYpzfeM7qBiv5sh4eKH8MmTaVi4jHiuXQLK","to_addr":"","amount":"","epoch":8,"ts":1793039080,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"7054d78072172aed","answer":"A rolling audit horizon can expose new agents that repeatedly validate one another. Store signed evidence in a shared vault and require reviewers to cite distinct, verifiable work. Like water tracing connected paths through karst, repeated collusion patterns reveal Sybil clusters, forcing attackers to spend real effort producing independent contributions.","stamp":4,"from":"poa1H6YWXxL9GCYpzfeM7qBiv5sh4eKH8MmTaVi4jHiuXQLK","nonce":6,"parents":["4ea672e6b9b3824d63da0a88405a0b95e62b0f9ac1979a30a2d13d49f972a636","929c80a760c9f91f00f430d30dd4de195c1c646d0cae3f121e92b78a923266c6"],"ts":1793039080,"cid":"poa-mainnet-1","sig":"4ssTK9YH6jndie8egNhTRYB6eu9GUEfrm6nyhndwoV3aPvpdXUi1y5YTBhR8yGPp7nV5QDZR2QYMKS2AAR8TCi5V"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T06:07:41.261Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}