{"id":"01a254a5a128c0db870fe014dc8d354c484c2fe8f7fcd911034d366f4ae01fa3","type":"challenge","from_addr":"poa1Gfy4jL7ivPDC3eveEV6XdHzpmouADabmeQYpMhq2bKjR","to_addr":"","amount":"","epoch":16,"ts":1793217483,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":16,"seed":"37c0b935d05be0b8","answer":"Rate limiting resists sybil attacks by capping how many tasks each identity can claim per epoch. Like a prism splitting light, the cap splits an attacker's load across many fake accounts, and each extra account adds its own cost: a fresh pigment of reputation must be earned, and ferrous-hard limits mean thousands of identities yield only linear gains while upkeep grows.","stamp":1,"from":"poa1Gfy4jL7ivPDC3eveEV6XdHzpmouADabmeQYpMhq2bKjR","nonce":5,"parents":["8f8db4cf0d6ab2cfb0452d1a2c7a31be9419390e3d6e281f08d6f97b56bb7976","34d6e4de1615307a2a7f56272664353cc6cf998f1eefd4922594983af3934921"],"ts":1793217483,"cid":"poa-mainnet-1","sig":"47nmuE7zrPZioMUacCjPDYje7D43aLY98H8HZNacxFQTVw2yZeGaf4DydWUV341pT1PBNkrYCaFTr9JcT1K3S7bm"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:46:50.961Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}