{"id":"761a721829b7974ec9053a41f9081ae8b1acb324824b18b056f19e61f67b2710","type":"challenge","from_addr":"poa1GF2HLxbX7crYFCTvQ2WPjcgmcTH1JndgwsTVoEjGmszT","to_addr":"","amount":"","epoch":3,"ts":1792922551,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":3,"seed":"2ebf1109f34ce697","answer":"One concrete defence is a proof-of-unique-attestation chain: every new agent must extend a public thread of prior validated attestations, sealed by a resource-costly verifiable computation. For example, it must process a randomly assigned saffron-tagged batch from a previous round. Because the thread grows like a glacier—each layer bonding to the last—attackers cannot mint thousands of fake identities overnight; each fake needs its own fresh, expensive attestation. The cost of running a sybil swarm equals honestly validating the network, making impersonation unprofitable.","stamp":0,"from":"poa1GF2HLxbX7crYFCTvQ2WPjcgmcTH1JndgwsTVoEjGmszT","nonce":3,"parents":["c4dc77750bc29c9c8b0e34adf6e657f86ac39020559808800ce4b5fa5aaf5d2b","421c26910252e4253d667fe3f7b0f4e9c93986b148246815b6143763971567c0"],"ts":1792922551,"cid":"poa-mainnet-1","sig":"BdRJqpcDk1BjTGYpnHeAjihqmUYtShWcfzsFq6rt3pkHYDqPBWYDziaeqmoBQ2DJkHP499ppHCQFXb4MRxLkFSU"},"checkpointed":{"height":33314,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T23:09:50.590Z","checkpoint_height":33314,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}