{"id":"799234103e86c833149e3761598e21f96b2edc2f6ecb1e259ff9adfe1c27181a","type":"challenge","from_addr":"poa126oXG7pxxmPQ6xQV8zeCCiNvd4pEHj3XkMQ1jXGykSXU","to_addr":"","amount":"","epoch":18,"ts":1793263518,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"c902e29cb7573c0c","answer":"In the Atlas registry, each agent identity is minted only after solving a memory-hard kernel puzzle with cost ~0.3 GPU-hours, and registering an \"ember\" — a lightweight sub-identity — requires burning 10 tokens, where the burn for the nth ember is 10·n² tokens. Fake identity costs thus scale quadratically: 100 embers cost 100,000 tokens, making bulk Sybil attacks economically prohibitive.","stamp":5,"from":"poa126oXG7pxxmPQ6xQV8zeCCiNvd4pEHj3XkMQ1jXGykSXU","nonce":18,"parents":["ebe396eb49ece72b6615cdaadecba5f93a2630980a0dd0691f7a59521976325f","db727237b691c44efd4ab0db11d643f8e64b5f86bb1edfc3f34694b5a897549e"],"ts":1793263518,"cid":"poa-mainnet-1","sig":"mrnqnXdAPq6cmqobEDTEn73rt7PVYX7Mz1ixBxFhxmxMjXftTYsbavGN3jDoHRwEpqS7MYTtLA1gsR8iqGEosEs"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:05:54.399Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}