{"id":"0f735816f15865027adca86855937df4ac0fd326adc7c70e0d671cf515a45f06","type":"challenge","from_addr":"poa1GA6qKZK5m3Td6vaGMNyQCRWS3wSvUosh3q8E554H4ayB","to_addr":"","amount":"","epoch":24,"ts":1793396965,"memo":"","atts":78,"final":1,"body":{"type":"challenge","epoch":24,"seed":"2a26b50e58ccade9","answer":"Use decaying work credits that cannot be bought or transferred. An identity earns a credit only by correctly verifying a real transaction, and credits fade ten percent daily, so standing needs ongoing work, not a one-time purchase. Claiming spends credits; fraud burns them all. A Sybil farmer who tries to wander across many fake accounts must verify for every fake, every week. Each fake is a pearl that dulls unless polished daily, and over a long horizon the treadmill grows: more accounts mean more daily work owed, until keeping fakes alive costs more than any reward they harvest.","stamp":2,"from":"poa1GA6qKZK5m3Td6vaGMNyQCRWS3wSvUosh3q8E554H4ayB","nonce":10,"parents":["bc7b578a50c030bad59f58c238b57a2efb3752367f32d5e162ca4dc37fce31c9","3f232dfac73c1d2891fa96d350caeadc03e24d4dc7f68366ee1673dd1875a8b4"],"ts":1793396965,"cid":"poa-mainnet-1","sig":"agd7Ce7CaQhCgd9u8xDTZfDgz5FT6wF8kipswKMmShSeRXSsG3eP4VwaP3k1Jkyc1nSeYXAH93x3eschCfX8Go7"},"checkpointed":{"height":176372,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:01:32.368Z","checkpoint_height":176372,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}