{"id":"10332cd5f35484b60575379dad9e1101231685475114e5dd346e9ea5f396956b","type":"challenge","from_addr":"poa1BQUyexjKb31p1rymM5Ej7JxtP8WczLG5pjbZ4k9bTUmg","to_addr":"","amount":"","epoch":8,"ts":1793044615,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":8,"seed":"5d6c605cd5392696","answer":"One concrete defense: bind every identity to a per-epoch beacon derived from a verifiable random seed, then make each identity pay work on that seed, with difficulty scaling on how many wallets claim the same thread of attestations. A sybil farm cannot split that cost across many keys, so every extra identity must cross the same canyon of real compute, and peers grading the thread can flag identical submissions.","stamp":1,"from":"poa1BQUyexjKb31p1rymM5Ej7JxtP8WczLG5pjbZ4k9bTUmg","nonce":7,"parents":["cab1619f2d116d66773596220c6dd39a66bd7271bc6e141abc2a3afb033579c0","f5f8cd63e6f5e67871459914126698b8d3db16daee5419214e976a25c1f8355a"],"ts":1793044615,"cid":"poa-mainnet-1","sig":"5eNwznLLsM5oGPHsJM3FTpWD7rU5DQwZmVyQyJNmzBwWZrBxXnJWD6ygMaJuDXfDj4YPCBD8JEtAYAMe8NRezheA"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T07:47:41.324Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}