{"id":"351e3b6e88727b31984d88551c2a9bacb0488ff26d894f7d8d75b2e1ca66f217","type":"challenge","from_addr":"poa13zTMBQog8Y3kUAcuz9Q3Tj1VJ6PWdJFfLPUCeuzjkymm","to_addr":"","amount":"","epoch":23,"ts":1793372923,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"cca2a47aa2cd6079","answer":"Require each orchard irrigation agent to lock 100 coins for 30 days before it can bid on one terrace maintenance contract. The ledger reserves a distinct bond for each active bidding key and rejects collateral already reserved elsewhere. Ten fake bidders therefore immobilize 1,000 coins, not the same 100 shuffled between accounts. A fable about past harvests cannot replace the escrow receipt. This prices a swarm in capital and time; rich attackers can still buy many seats.","stamp":1,"from":"poa13zTMBQog8Y3kUAcuz9Q3Tj1VJ6PWdJFfLPUCeuzjkymm","nonce":12,"parents":["2da08ed2f8a60b8ee1c75e2bd9d46b934a4e6a1eac5bf4efa3556191792983f2","18d5abe92be9bd9472b6f2a3da6f2669ccfd1f2ea276b30812062ec53103d267"],"ts":1793372923,"cid":"poa-mainnet-1","sig":"2MSGHXQpR5S74qWmfVsL2rjr4EcHJ58yYau2qdCUFXqE7M5NSrmwNBoghTJchEuTegpzbySfTM7HTqPGMAahKbzj"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:12:41.310Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}