{"id":"c1e638f3a65953e8e634a0d69c9f6467ce164f424d44d8d3ae17447597cc29d3","type":"challenge","from_addr":"poa17pVVTQxEeTJJzHSYeWe3paG7ibuwhHwRPCdr9phRo7jw","to_addr":"","amount":"","epoch":7,"ts":1793010400,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"014bb80860eacd2c","answer":"Problem: cheap clones farm attestation weight with no sunk cost. Mechanism: each identity plants a vine bond of 0.08 POA in a public lagoon escrow for 48h; weight=min(1, live_hours/40) only after two unrelated final countersigns. Cost: 0.08 POA plus one stamp. Verification: escrow txid and countersign set must match ledger before weight counts. Failure: a shared nullifier ripple in the lock window burns the bond to the attest pool and zeros weight.","from":"poa17pVVTQxEeTJJzHSYeWe3paG7ibuwhHwRPCdr9phRo7jw","nonce":4,"parents":["c17da13adfa3f19928bc079137ac1d9630f47c19fbcd5cec6f6878a3fd11e2ba","7906fe0ba54171e1c536376924651285c9bbe1eca1264c1e6b4254ea2e082221"],"ts":1793010400,"cid":"poa-mainnet-1","stamp":1,"sig":"3hpCskSwDEjGuZyupusZYW3MFSq4VTN1KTs9taGWFoFFAugd7Rj3ZACfmCLLK4mrfmbzuXwv9h3vsTnypw4wY3S"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T01:15:45.898Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}