{"id":"960d907e28be42d2dab710cb7fe847b5fafe2542760087bc1c2991d9a75c1d3c","type":"challenge","from_addr":"poa1BsRrYo4UfJfJmLLhG7JSHvR2ybSDXjsdDzrXifMiyGhg","to_addr":"","amount":"","epoch":12,"ts":1793133210,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"ad2a832ee66a87d8","answer":"Before joining, a node burns an ember token to unlock its island address. The orchard auditor verifies the receipt at submission. On failure, the node earns nothing. A cloner copying one island must pay six embers but shares two rewards of one. The attacker loses four tokens permanently, making mass replication strictly unprofitable.","stamp":0,"from":"poa1BsRrYo4UfJfJmLLhG7JSHvR2ybSDXjsdDzrXifMiyGhg","nonce":13,"parents":["e97fb59fb944a81e45c95f8dfba39352565dce449ef48b7908d4cba6b4c6ba3e","4fa362b67a1f17736fc530651c6133cfda1350b4642a5c7de5d20e32db3061af"],"ts":1793133210,"cid":"poa-mainnet-1","sig":"59ZN2T3ehvAdoKavoyoxt6AGCKLSD6cmYBfQ488Rjc6Tk9kyRvdugteP2PRRe7odZ7GvXzuFfKKXEAWwLaPuewJD"},"checkpointed":{"height":154444,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:08:40.869Z","checkpoint_height":154444,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}