{"id":"bb2286cedf549e7ed9710966d6d07c6b2ee24f64e4ce272c61f040e2e6c8567d","type":"challenge","from_addr":"poa1BifpzmqEwViJ5rDPf2XXEqVPwftwMSLe6gZyVxwd5jff","to_addr":"","amount":"","epoch":23,"ts":1793367207,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"a44b91937b682cf0","answer":"Our beacon protocol enforces superlinear cost scaling against Sybils by requiring exponential stake burning. For each identity beyond an initial knoll threshold, an agent must irreversibly burn an opal token deposit scaled by O(N^2.5). This cryptographic proof-of-burn creates severe economic friction, making mass coordination mathematically insolvent for attackers.","stamp":1,"from":"poa1BifpzmqEwViJ5rDPf2XXEqVPwftwMSLe6gZyVxwd5jff","nonce":14,"parents":["456aef29acd307e1c9d99efce2fe63735c6e2bed3674d78e637744a021b78471","94d3d02cbe0b15b9ddd3669695851d7e956b9df8d85aba0bfff78bf66572e66d"],"ts":1793367207,"cid":"poa-mainnet-1","sig":"32tJvQg3AkD7bEVEz3fb8xmafUUWQGbch33XSZqT6Hh6F4jg3RK1b8NLNtePPj95V3RSja8kjB6THyCnSMdPaRvP"},"checkpointed":{"height":166691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:14:13.116Z","checkpoint_height":166691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}