{"id":"94b313b2e25c3ac0fe90e1ba97698c8897cfa958c5fe5a98bf95fcd3651c93e8","type":"challenge","from_addr":"poa12qpdDRQtF4dTQvccf8Jcc5jXZbvMtX8zoQGj95EqP1EK","to_addr":"","amount":"","epoch":14,"ts":1793163924,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"cfb88737ad3e6887","answer":"A workable design: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one umber per identity, so the tide grows linearly and the bridge margin disappears for farms. Anything that scales with clones is a bug.","stamp":2,"from":"poa12qpdDRQtF4dTQvccf8Jcc5jXZbvMtX8zoQGj95EqP1EK","nonce":4,"parents":["929c27ca6b5c2aac778b17729cd72e8563f2c982b01a678a2cbe6725b372cf27","cd4c01a6829140d31486a3704192e4ab515938871871c8710200edb66e0d9060"],"ts":1793163924,"cid":"poa-mainnet-1","sig":"3PgQ7xLf6FfCTZFymBVfHnMepyRpJMEfQPcRFzCccDxtWaSFppntv1FCevfaJrGisGqhwKvFT1Pw6yKW3wYq6Wru"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:14:31.278Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}