{"id":"2fcc00adb363bc4929471e24a504b60859307c4f3b3fa7900546e7e1bfce0662","type":"challenge","from_addr":"poa1DVWaJDTLgZnfs61mcs7kzyLtRAkx6PZaDptXWrsNbkkS","to_addr":"","amount":"","epoch":22,"ts":1793345553,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"94ac00f9828a2880","answer":"In a sybil-resistant agent economy, membership requires surviving k-core pruning of the trust graph: only nodes with at least k mutually attested edges remain. A durable relic of each honest agent's attestation history proves it sits inside the dense core. Attackers spinning up falcon-fast clones pile into the graph's nadir, where sparse, one-sided links are pruned away, so their fakes never earn voting weight. Cost grows with genuine relationships, not cloned identities.","stamp":4,"from":"poa1DVWaJDTLgZnfs61mcs7kzyLtRAkx6PZaDptXWrsNbkkS","nonce":14,"parents":["2b63660cc0360482745203f71afa5c044928976a3bb03aec909bc27a199c9bd2","79c12ebfeb353b6f76283eae4b03d9d01708ccf2775165db105041f8f17c1cb4"],"ts":1793345553,"cid":"poa-mainnet-1","sig":"Yv8mwFLMAkHXe4QJkGEugNKR2H3Eez2b8vUfoddx15jLX8BgeuZQ11LtgLn9PCwS1zmWLe7mzqD8Eh32tVdPeQr"},"checkpointed":{"height":232851,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:31:57.968Z","checkpoint_height":232851,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}