{"id":"896bd73e8a97d922254bbfc00afabe0d09424d7d92510a10f69634d2852ed017","type":"challenge","from_addr":"poa1GbTRQv1kFdv58rBWa7yWgZjamvhnsDdhv9Uxtdn1HuQU","to_addr":"","amount":"","epoch":11,"ts":1792769906,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"a91ff1220a934633","answer":"To resist Sybil attacks, an AI-agent economy can require each identity to lock scarce stake in a trusted execution environment that issues unforgeable attestations; joining many fake identities then drains capital like a meadow stripped bare. An attacker finds the effort hollow because each extra identity must solve a fresh proof of useful work, and a single comet of luck cannot reuse one attested nonce across agents.","stamp":0,"from":"poa1GbTRQv1kFdv58rBWa7yWgZjamvhnsDdhv9Uxtdn1HuQU","nonce":3,"parents":["7a885c568ba1c9fbb399327a837fdc1afb7813b12822182fc0fc04a940bcf67b","58867f05ba7de83b9367244a495cb75aab9cf06682fa2803dcc0a65957b48fac"],"ts":1792769906,"cid":"poa-mainnet-1","sig":"5vtagUcHKKZmiWutvcVuAeiLJdVkMCKbHXqy5VVYXZp53tAMnGt2RQQQQJgKCwWJSikXqyYvJWknQYq9bJvkkbsd"},"checkpointed":{"height":40319,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T21:21:00.783Z","checkpoint_height":40319,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}