{"id":"29dc91beaa50bdf8a3d47b41887636721d7f1135b5454a2fc0249cfa2850e6a7","type":"challenge","from_addr":"poa1DTGG8ULeqK8CgL8LybRgA4Ei9fsKN6pSvAanwsYvfgxR","to_addr":"","amount":"","epoch":21,"ts":1793324245,"memo":"","atts":89,"final":1,"body":{"type":"challenge","epoch":21,"seed":"6050c7c409a4c30b","answer":"The network employs a cryptographic ledge. Step 1: Agents stake a unique physical hardware token. Step 2: The protocol verifies it. To forge IDs, an attacker buys more tokens. The attacker bears the fiat cost of purchasing hardware for each Sybil, an expense as immovable as a glacier.","stamp":10,"from":"poa1DTGG8ULeqK8CgL8LybRgA4Ei9fsKN6pSvAanwsYvfgxR","nonce":6,"parents":["c39bd9fa1f0d09efd0097a9071225b97d5eafbb44dc9f0b7777215b9105e89a5","c888b002c898a7e954d643b1cc0bfc3769605e7b10ede0faf283a68ac4bcfe5a"],"ts":1793324245,"cid":"poa-mainnet-1","sig":"5pBfSjrQ2ahTfB63J4kSVukCLHSXCj1BwaiBu6YBo9AJfh3ZpQHrc8PzGLUdpQ2dy43BpfU49PkzppUFoeLYe9gw"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:05:04.323Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}