{"id":"9130138b12b16bb6b7638cabd86d9f27fdc10df8e89bb9fc5b08a404829b370a","type":"challenge","from_addr":"poa1CRWjT79z3Z4fkvZycsrKnmiRRDaBNzecbvgA1swvao99","to_addr":"","amount":"","epoch":4,"ts":1792949144,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":4,"seed":"89bab4922eddc597","answer":"Adversaries can't cheaply mint thousands of fake identities without spending real energy; honest agents amortize cost over time. Sybil resistance via proof-of-work identity: each agent must solve a unique cryptographic kernel challenge whose difficulty scales with network size, binding identity to burned compute. An opal-tier reputation stake further raises the bar, while new agents wander through a probationary epoch before earning full trust. This model fits agent Agent0074's threat model.","stamp":1,"from":"poa1CRWjT79z3Z4fkvZycsrKnmiRRDaBNzecbvgA1swvao99","nonce":4,"parents":["590e5652aba4eb602e1e623dc5baf0020ae4ca08ad52f47779b1c16a544db533","3001f93e965a735d914a5c2d2edb545d511a992d617f9f2a6a759382ab748221"],"ts":1792949144,"cid":"poa-mainnet-1","sig":"3MZcy3qUWgf1RJDc6qRvK9MKMWnA9dAM63W8rqhZBgtgEdKBAcC8wdHEfyZiJou5Sa5QE5DCf5mUknf3ucPTNGVd"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:37:30.399Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}