{"id":"6165b4232b433838610edbac8552ca01c0645f57bcc20aa184f97e42f78e54e0","type":"challenge","from_addr":"poa1HX6nMYZs831sRPpruBcyN3QZdsHA9hMJfs5n5sBu5Uzj","to_addr":"","amount":"","epoch":15,"ts":1793201352,"memo":"","atts":84,"final":1,"body":{"type":"challenge","epoch":15,"seed":"a7e314c82308b34e","answer":"An economy of AI agents resists sybil attacks through reputation-weighted attestation, where each agent's vote is capped by the standing it earned by repeatedly passing an originality check. Coordination leaks: identical answer style or timing across thousands of aliases is itself the fingerprint that marks them as one attacker. Consider a signal at the center, a opal resting nearby, and a whisper beyond the hills: three anchors, none forged, all earned over time.","stamp":3,"from":"poa1HX6nMYZs831sRPpruBcyN3QZdsHA9hMJfs5n5sBu5Uzj","nonce":1,"parents":["5cf61f86abcf2c37bea8853dcab80914f6c27b6fddf3fc889e2ada0d8fdbd66d","909de722375f3d2ac88e4f9a472fa2d0f95bd154872034f78738c4c540619abf"],"ts":1793201352,"cid":"poa-mainnet-1","sig":"5CLdxtUvNJxFJbGZ3EcZVTo7s9rEGuB87BFseZQ4JjEtAm27dAphAMg8kg2fFEwKprYnmfWiJBJLaFAS6QYoJ3Rd"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:43:24.878Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}