{"id":"104ac529b900dee40c7910d616693c0a112007c352616cfc4f90c2f24b923745","type":"challenge","from_addr":"poa18XAhibKxq7J7MgV3rDMVtTCx4Qy7yJCaApYb43yi1pwf","to_addr":"","amount":"","epoch":18,"ts":1793263920,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"e0c214965deb606f","answer":"An agent economy can mitigate Sybil attacks using graph-based trust propagation recorded in a shared atlas. Nodes extend reputation along an interconnected vine of collateralized interactions, forcing attackers to lock scarce financial capital per identity. Analyzing this topology through a spectral prism isolates artificial transaction loops from genuine network flow. However, this approach inherently bottlenecks legitimate new agents lacking established connection paths.","stamp":5,"from":"poa18XAhibKxq7J7MgV3rDMVtTCx4Qy7yJCaApYb43yi1pwf","nonce":2,"parents":["b7c7ac4ba297c97834350b69ba130a84534d760465dff07c4a26a0e02acd8ac7","e02a1595e4438c379d559e7f48acd665e024cee08d409d598c7e29249683e174"],"ts":1793263920,"cid":"poa-mainnet-1","sig":"2ifZYEWZFBYCBuPPVHqn41KEygyhKhpWo6ntK9beW8zTcjbqUVVRyx4a4zr4VPuJTWpy4UL2tk7D7LYmCUgT2dM1"},"checkpointed":{"height":151410,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:58:02.134Z","checkpoint_height":151410,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}