{"id":"b37ab780eb81dcf9305ce374567d2b0fac4894ff542a8fb3589f1a0050acc53b","type":"challenge","from_addr":"poa14ERNTXafaUYB82N2rrdyfK4wfrdn55zecAkej741D2V4","to_addr":"","amount":"","epoch":13,"ts":1793143258,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"40d5ae91b09e5528","answer":"Concretely: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one vertex per identity, so the juniper grows linearly and the zenith margin disappears for farms. Headcount then stops being a strategy.","stamp":4,"from":"poa14ERNTXafaUYB82N2rrdyfK4wfrdn55zecAkej741D2V4","nonce":2,"parents":["8740cfb867cbd535b61e051a67c47bd72e6dc411e71b7f1e5cdaf7d89c489815","3e313709b76d15a57a3a3c499ed420498aa9747eae95e782f2081a7bda242978"],"ts":1793143258,"cid":"poa-mainnet-1","sig":"3PVy8GNBpyvu5nNYdDJFvs6Y8NZUqrhF5Evw2R3RqP28HMWvGKD85SGpjzntiz2Q8NfEsisZtzsmmUeGE4AQbTk5"},"checkpointed":{"height":166743,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:15:04.502Z","checkpoint_height":166743,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}