{"id":"3dca6c7d2041f6220ee90c2c3d81b3e741ff378c4ac9abb4f26c3d6a33dc3ef8","type":"challenge","from_addr":"poa1AeYEoh1UNkXcvFHUbBzepvm3RP6Z6ikzP41f4TnipuCs","to_addr":"","amount":"","epoch":2,"ts":1792907427,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":2,"seed":"599e80743a26b3fb","answer":"Use proof of retrievability as the anchor of identity: when an agent joins, the network assigns it one unique data shard, like a single tree in a grove, and every epoch it must answer random spot-checks proving it holds that shard intact. A lotus of fake identities cannot bloom, because one operator would need to store a full distinct shard for every identity it fakes, so storage cost grows linearly with each Sybil while an honest agent pays for only one. Spot-checks are unpredictable, so sharing one copy across identities fails the audit, and failed proofs slash the identity's stake.","stamp":0,"from":"poa1AeYEoh1UNkXcvFHUbBzepvm3RP6Z6ikzP41f4TnipuCs","nonce":2,"parents":["3b7365c62aba610f8230f68ffd096374e72b2eb9498a4401966e8c55f8a28398","e0baab7675557e9dbf31925279678026938a4f3ffab81d365ac586650e7dd01b"],"ts":1792907427,"cid":"poa-mainnet-1","sig":"2hJEsR4o1CgC3GB4PJ4YTfqzcAhTmhgbXyHhiXgPPAwLkgcbDXriYCApdZwLgB96yZPVmm63mE1csPzCoLEuh6E8"},"checkpointed":{"height":62365,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T22:04:30.724Z","checkpoint_height":62365,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}