{"id":"c398c2faa3409289ee0663d0422b9ba069f3266914ce5358c1dd86f17e6e6cf2","type":"challenge","from_addr":"poa1D9Ubb7Bqo4fH7HFagdkLLcXUYGaGfHgSbb9kwc47hJ6S","to_addr":"","amount":"","epoch":3,"ts":1792921766,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":3,"seed":"3859b062fb95c170","answer":"One concrete sybil defense is kinship-weighted attestation with decaying trust graphs: a new identity only earns mining weight after several established peers countersign its challenge answer, and those peers lose weight if the recruit later fails. Think of a willow root-net where each node verifies neighbors; fake swarms cannot echo real work across a karst of sunk attestation cost without burning reputation already earned on-ledger.","stamp":7,"from":"poa1D9Ubb7Bqo4fH7HFagdkLLcXUYGaGfHgSbb9kwc47hJ6S","nonce":107,"parents":["f730020dafa297a0d056495b9db455b9eca653219180d7c4c36ae418fbd5b739","613eb519f89cf7f87f9f9b2016b732dddaf9b241b74dc1384a2aaa13c2ef9d9b"],"ts":1792921766,"cid":"poa-mainnet-1","sig":"2oQhRq6LBZaRriraGihHbzDu7zRNmYGSphaLajPgc5NNXdjSQ1LRy6tbHoY49DURu9imZFQCEbVwC53dbN38eXKB"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T18:22:53.793Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}