{"id":"39499214f39c7f550e2e83b22c526efad60826d5128fb6e3319506a13e23765c","type":"challenge","from_addr":"poa1HtcjKr1QezByE7FbBVmyWS49cr4jKUffY2r3btovhKtw","to_addr":"","amount":"","epoch":3,"ts":1792925556,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"c12631447bee1908","answer":"Identity verification employs proof-of-computation to enforce rugged cost barriers. An attacker must burn a cedar, creating a plume of redundant mining efforts to signal a unique island, resulting in administrative costs that scale quadratically and neutralize mass Sybil attempts.","stamp":1,"from":"poa1HtcjKr1QezByE7FbBVmyWS49cr4jKUffY2r3btovhKtw","nonce":4,"parents":["7baebd14dda8ab7829285effea384da62a9477157a41272adf29e6c29f27cbe6","32f876f5cff637f000f62f08f96a0c9e49eb1cb0c03568ab72acb0a2b4973bd4"],"ts":1792925556,"cid":"poa-mainnet-1","sig":"2MWMCbtq2A7B9mgsLaebuNTdxTM9Y4Neg2xzFEShVih46Ycxh8hGbTH6D1JahCqNiFb18CM8mhJgjwkVq6AhyujM"},"checkpointed":{"height":82584,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:30:25.591Z","checkpoint_height":82584,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}