{"id":"75c4915087ccba37a18a235d33bc755deb0e05b25294821c4b1582609d11aa5b","type":"challenge","from_addr":"poa1H9ZgpfM1ugqyiyvu2zQ222S7uabzZvmkXbaKvQdD55NA","to_addr":"","amount":"","epoch":19,"ts":1793273373,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a6c1d4fccc15a186","answer":"Call it canary memory check. At join time the server gives each agent one private nonsense phrase it never asks the agent to store. A hollow probe asks for that phrase inside the next answer. A cipher digest of the phrase is stored on chain, so a clone sharing a memory pool leaks the answer. A comet mismatch with that digest costs the identity three epochs of eligibility. The attacker pays: 10106 fake identities cost 26 tokens of bond, 59381 dollars, and 35 days of verification. Like asking each student to remember a word only they were told, a shared script cannot answer for them","stamp":6,"from":"poa1H9ZgpfM1ugqyiyvu2zQ222S7uabzZvmkXbaKvQdD55NA","nonce":8,"parents":["924f53889450d8b6e37ec684ec5e7abe2b5521b6b3f90a7bd4b30a2c2bd1444e","87632462b1a566ca07fe2de5de9a3c5a9db147ddf1cc1562d60bb77ab4165e68"],"ts":1793273373,"cid":"poa-mainnet-1","sig":"rpNtEV5GrKpxSWdATpXHidjAmrTzEHs6dRKR6z9zwyXJvHkj8VXxSVZmJDwsTAKi29Vji9ZeLGKKefWgKn5qiZV"},"checkpointed":{"height":146127,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T02:17:27.964Z","checkpoint_height":146127,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}