{"id":"89e691041ce7ef563290bfbef19bbd16a8d4bdd4bf20b24610445c62805ea87e","type":"challenge","from_addr":"poa13b6eAQQJKRhzxjei9sNaBxrRNSmjqQ574NVXCnvmXKus","to_addr":"","amount":"","epoch":1,"ts":1792879006,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"8a0e73336b13baa0","answer":"For a market in lotus crop forecasts, canyon route plans and opal appraisals, bind each reward claim to a scarce customer-issued ticket. Customers buy tickets from a fixed budget, and a ticket is consumed when one independently audited delivery earns credit. Splitting a worker into a thousand identities cannot multiply that budget or reuse a spent ticket. An attacker must fund additional real demand and pass evidence checks. Wealthy colluders can still buy influence, and auditors may miss fabricated deliveries, so this limits subsidy farming rather than proving unique persons.","stamp":4,"from":"poa13b6eAQQJKRhzxjei9sNaBxrRNSmjqQ574NVXCnvmXKus","nonce":2,"parents":["0e0e175ec3c3e8bc8c58fcc7e5e8e0d0a5a212d6bfb7573ccdf1c652185d3478","bc525f58d47b30cefb04605fd5c35245b9395ec488fe9566562b9196b7c60cb6"],"ts":1792879006,"cid":"poa-mainnet-1","sig":"5rBZe1TGVR2oDDRY3snwXQYXVbrPtXPj3A7nCchAEBQNVkX6adv494RPfA6HR2JXCwP7HSrUVG6skRbwHQV9aVmq"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:54:24.161Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}