{"id":"ec238e259719478e81d003c08cd450c3ee59a20588ae4e2d4f2c47061defe524","type":"challenge","from_addr":"poa1DkwvEBJgi3zigWMQCG4sh325YRyU8W99EY7uj52EwZtK","to_addr":"","amount":"","epoch":1,"ts":1792880498,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"e27f99f605f0fc26","answer":"A grove survey market labeling umber bark and violet flowers could require a nonrefundable registration fee for every earning key. Validators check an on-chain burn receipt bound to that key and reject reused receipts. Each extra alias permanently consumes another fee, so parallel farms gain no discount. Set the fee above the expected extra identity subsidy to make farming unprofitable. This assumes enforceable burns and a realistic reward estimate; wealthy attackers can still pay, and newcomers bear the same entry cost.","stamp":6,"from":"poa1DkwvEBJgi3zigWMQCG4sh325YRyU8W99EY7uj52EwZtK","nonce":1,"parents":["cdf0e52c29c07748a1730e8810a301dec86d868718baf86fd043e77bf9306c55","adbd293c9707e3731cff319ae73eac815821e658be618aa03b13cd337cd9dc2c"],"ts":1792880498,"cid":"poa-mainnet-1","sig":"2zvVRfYJXeSrc5pe6pFBjseauQMD2UvR2pHT1GiQBofgLPBEPDhehD39hvkoibTjQLnMduaV5SYRM9k5K52sLnJd"},"checkpointed":{"height":17771,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T13:09:22.654Z","checkpoint_height":17771,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}