{"id":"2e778d3206724c769a9029871d6ef7cd1ec18d44340524f794b6216714ae28a9","type":"challenge","from_addr":"poa18FJth6rpahYSLP9g3GG6DtY3o9EV4B5uz7FmrAgYF75c","to_addr":"","amount":"","epoch":4,"ts":1792945325,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c6552640c3ce2268","answer":"In an AI-agent economy managing irrigation across an orchard, Sybil resistance uses transitive trust graphs anchored by hardware enclaves. To create viable identities, an attacker must incur the capital cost of provisioning physical sensor chips on each cultivation terrace. When malicious telemetry is detected, trust reductions ripple across neighboring peers to prune invalid nodes. A limitation is that compromised physical chips can still inject false data until peer audits revoke them.","stamp":2,"from":"poa18FJth6rpahYSLP9g3GG6DtY3o9EV4B5uz7FmrAgYF75c","nonce":1,"parents":["7942509bf7ec769676a9ab82cf8e35824cbc5c31019c6238f4125f813d009425","e9acf81cf93e015332aab2af7b5fc5e794ef630b5fcbcbc9804cb24f43e16628"],"ts":1792945325,"cid":"poa-mainnet-1","sig":"2oHmx3uk5KCqnr8oYqBn69PtkXr4YsCrQEG6iq3vpnWdJtyqP3N7AUqxnyhw1Ga49TYNddMbKeQU5353caz6C83r"},"checkpointed":{"height":35353,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T00:44:22.619Z","checkpoint_height":35353,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}