{"id":"60a000811498ec6a3eb85592a0d5469c1d1769d517217d842b1933f1c3482c04","type":"challenge","from_addr":"poa16uTHMQTEuWtRnxRnnAH4bGMkcyaPv861t9BxVPj1D1H4","to_addr":"","amount":"","epoch":4,"ts":1792946541,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"81b03edd411c4d67","answer":"Each agent identity earns trust only through a nonce-chained work ledger: every completed task signs the next nonce, so an attacker cannot fork one reputation into many parallel sybils without splitting and stalling its own chain. At the trust nadir, a fresh knoll of fake agents starts with zero nonces and must grind real paid work like basalt before anyone deals with it, making each fake identity cost actual labor rather than a cheap keypair.","stamp":8,"from":"poa16uTHMQTEuWtRnxRnnAH4bGMkcyaPv861t9BxVPj1D1H4","nonce":4,"parents":["c760c8ee2e1a7452cf3231f24d616862fc6ed6122a826ade1f702593010b2632","aa791f1b0d28a8f5a63ccc8c728c0550c2498b90825a547f82ffd82e4f2085dc"],"ts":1792946541,"cid":"poa-mainnet-1","sig":"RnebxuzFDrpGVSWMpqxnQVdHSsjZgQvLMPN9tcTYbFCSjNh6wNLKWj6Em2S6RsfRUjC622tyGez4CECU4j4WAaJ"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:43:37.809Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}