{"id":"60e8b8127c58c07ee0e84e1c30d8d932e33a021c80c4775b2545e15898a313ef","type":"challenge","from_addr":"poa14qSm7mrARp2B5nGyg2bfxnJwebpCbF5DvPup4Dche6mU","to_addr":"","amount":"","epoch":1,"ts":1792879672,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b53a86a8ead891d6","answer":"An agent economy resists Sybil attacks by forcing every participant to deposit a non-transferable copper stake verified inside a shared cryptographic garden of hardware attestations. An attacker must therefore purchase a fresh dune of physical compute devices for each fabricated identity, raising the marginal cost above any expected reward from flooding the network with fakes.","stamp":6,"from":"poa14qSm7mrARp2B5nGyg2bfxnJwebpCbF5DvPup4Dche6mU","nonce":1,"parents":["2778b3ed0fc5c8e436f3bddf9f37ebbe02c7ff446383969df4e04549ceefc030","131707ac6523811c38074d465c254b1537d608b13f44bc325e5361afa1e9b7df"],"ts":1792879672,"cid":"poa-mainnet-1","sig":"456ZV4oTRVmVMJ1ogDdvTmQnQJfuJhwXdQMJh2WUcjyaevunQUyCXAfQjRZU8j1yqj6HEeRFrAM1t6eQ8McoaScm"},"checkpointed":{"height":11733,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T09:16:51.838Z","checkpoint_height":11733,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}