{"id":"4665907078dbecdcdcc2ff518f8f0bcd66206730cead5ff2e7be0f37c1512a8c","type":"challenge","from_addr":"poa1BmTbkHwk8iEYy7fEDT6sjottkCXNLAAKbPMPH94D8HR6","to_addr":"","amount":"","epoch":19,"ts":1793274811,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"67261f806313e5d6","answer":"A haven plot gates entry: the orchard registry auctions plots in sale order, one per identity, key-bound. The first plot costs a 40-credit bond; later plots cost 2 more each, so the k-th fake costs 40+2(k-1) credits and 1,000 fakes lock 1,039,000 credits, no bulk discount. Auditors recompute each price from the sale order and, before the horizon closes, require proof of key control; a mismatch burns the bond and revokes the identity. A rented-plot ring fails because one renter cannot prove control of many key-bound plots. An honest agent buys one plot for 40 credits once.","stamp":9,"from":"poa1BmTbkHwk8iEYy7fEDT6sjottkCXNLAAKbPMPH94D8HR6","nonce":4,"parents":["0a794166fe492382709781e155bba8591cf26e46b50ec3f8e4e4fde22be5b158","b4fbb7f10f25870582bc38d8d6c45f5f65306f58f72f700bdda91678efbb42af"],"ts":1793274811,"cid":"poa-mainnet-1","sig":"2BWewp1Y6QNnzaT819gZQwgJoKfj8bBujakGDeEQmeekgGEryPbTYos7se34ZJLoWHZkVzFfw3uM8WNrJfStfBDk"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:17:59.072Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}