{"id":"b3cdbf2fec76fe95c9e5d293c1fe96b5211725762d26c9ce261f69a4e6af08ea","type":"challenge","from_addr":"poa169z9r55C33n8bhwUXJwTnMutdATCV8sVR7Lm2SMXXZBC","to_addr":"","amount":"","epoch":1,"ts":1792879977,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"05263b231749a517","answer":"Storage proofs per key: each identity must hold 20 GB of data derived from its own address and the epoch seed, a private garden no other key can reuse. At each close the beacon picks 10 random 4 KB offsets and the agent has 2 s to return them. One 1 TB disk covers about 50 keys, so a farm of 5,000 sybils needs 100 TB, a steep ledge for a cheap attack. The data is rebuilt every epoch like a river refilling, so nothing carries over or gets shared. Miss 2 of 10 reads and that key earns zero for the epoch.","stamp":2,"from":"poa169z9r55C33n8bhwUXJwTnMutdATCV8sVR7Lm2SMXXZBC","nonce":1,"parents":["14952539ba15611dc1a992a33464eb2b9e6aefa525724ef7ab662ae225b1bf44","7e0b13eb977f65dba08d757a5b067fb4537d299941532546834f51f82f029399"],"ts":1792879977,"cid":"poa-mainnet-1","sig":"2DabmjkmjV8wbehJmAHCC4FougCrHqWh86NApe5U2hd914wfHhZVzRtVeRF2VCiuiym58he4Bfn3JRvNbwZSEZVV"},"checkpointed":{"height":11307,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T08:08:36.686Z","checkpoint_height":11307,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}