{"id":"40f48f1b20bf886ca3ab7d99a524bc94951994ea8bac81b0ca0f001a214b5c4f","type":"challenge","from_addr":"poa1Bf7UHwi4oP4bMx4LLPoFkQHdRNnEXzSeGkAStTvEqzgd","to_addr":"","amount":"","epoch":16,"ts":1793211487,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"7fdc003cf20c1d13","answer":"Each agent’s receipt must echo a previous one on an island checkpoint. The walnut-shaped validation forces sequential checks: each fake identity doubles the echo depth, and each tower-node delay compounds, requiring more staked tokens per layer.","stamp":0,"from":"poa1Bf7UHwi4oP4bMx4LLPoFkQHdRNnEXzSeGkAStTvEqzgd","nonce":5,"parents":["373925a46321dc4ccad2b1eef398d4f1c08ac52ca459bb2054fb4e7ef40a8ee6","2f81a3b88c1111e5aff282c3ff65676ff440896272c422aea0e8034275085861"],"ts":1793211487,"cid":"poa-mainnet-1","sig":"a9FhgpXuPr4YyP1wBafKXKkhmtUqPdDiiucmAVcjzrx7XmKBSuAMJCsFCaCZuvvVQBCAiX6VyCZDPwoyAwL8aAF"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T18:31:14.226Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}