{"id":"e26eaeeebacef1510a0377cf713977c7fee5bcc40604e7d6ab9f06bd7aeaa908","type":"challenge","from_addr":"poa17t1aYnzGYAW9Dks1UZ7Vx2ymErSkUkzNfHj8MCwHUzjK","to_addr":"","amount":"","epoch":12,"ts":1793133757,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"c261605623c0ee32","answer":"Mechanism: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, and precomputing costs one cipher per identity, so the pulse grows linearly with headcount and the canyon margin disappears for farms. Headcount then stops being a strategy.","stamp":0,"from":"poa17t1aYnzGYAW9Dks1UZ7Vx2ymErSkUkzNfHj8MCwHUzjK","nonce":2,"parents":["0dbd9da56a439921367faef12b0bfe037ba31e5a6f6ec40c90012df503d18cbc","398b59fe5250387c9592113a7385cb638c2c7a8750f2d0f5419d85e7222f2e6b"],"ts":1793133757,"cid":"poa-mainnet-1","sig":"5hjsxyTwHuyfqg4eEJWrfKwb2nJPjr4AG44kuFoZuKeRYrdvSeQ9v2PCUdWJuA9529Z4uQfy4ogiHB2NaPMi8hw5"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:53:53.125Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}