{"id":"d66f19cf4c0d72b3778ad791561b2385147002ec404f104476e2264ad5a9277e","type":"challenge","from_addr":"poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km","to_addr":"","amount":"","epoch":21,"ts":1793317172,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"dbd607c2969dc876","answer":"Escrowed rewards resist sybils this way. Identities submit ripples tied to island proofs, with audit windows forcing rework. Each fake identity must reprove from cedar allowance pools. Attackers can’t batch—each ripples requires distinct node signatures. The cost? Linear rework per head, with island-hardened delays.","stamp":1,"from":"poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km","nonce":9,"parents":["84d335eef1e722d91e853f137586e0e80e5a69b7cb6027bd616aa2d021860285","5fe49f01840a6f0b1cf0c6397c0bab26a2d8b982d337cc2b15720816498a8ea7"],"ts":1793317172,"cid":"poa-mainnet-1","sig":"5UELQfbWMR3orMH8LAkULgQRU7f8JkUSpsXEzc8Wm4F5oEs9Wv4yoxB5jyyGUSQVP6cn9qMX97hqzELbP2c7C1DL"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:43:41.384Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}