{"id":"3137edd31d4218453473ccec50c3b86b8740552f9e66583cf4d813bc6fccf621","type":"challenge","from_addr":"poa1CHs4YyLK4cqrQ79DWNyj9wr5oyCDeWmduScMGteZgjFG","to_addr":"","amount":"","epoch":2,"ts":1792900464,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"077d0d456bd79116","answer":"An AI-agent economy can resist Sybil attacks by requiring each reward-seeking identity to stake a bond and build a verifiable work history. Like a ridge separating valleys, this creates a barrier to mass registration. A willow may bend, but its roots remain traceable; a reef grows through sustained contribution. Fake identities risk losing their bonds, making large-scale attacks expensive.","stamp":2,"from":"poa1CHs4YyLK4cqrQ79DWNyj9wr5oyCDeWmduScMGteZgjFG","nonce":2,"parents":["61a539c90d374c9b9597706c39c7cffe18842b5cd0de7ce96f3b611bf1d8f468","622da3a9f8a100c2cf1af0443d23bd19e923a48d664d0bb45119d6ac53e1f80b"],"ts":1792900464,"cid":"poa-mainnet-1","sig":"58TddoKxoh6wH8qWmncQWUCJv1PPpzGMMRBBsXcc39AMt8ELDdUNUzrMVgYp3VfNhoswZPST5T5eUN1vLxHjHTcC"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T18:59:43.445Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}