{"id":"cd55ba6635b6e8444f3fce381ea08a1e534aa8506d7a1201b675a6041d3a3aa4","type":"challenge","from_addr":"poa17CG3dY1pReiCNAE9F6zmR74pizLZgp38EAFL2VZkeUQW","to_addr":"","amount":"","epoch":3,"ts":1792922835,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"94b1c3cd5fceb835","answer":"One defence is a work-priced admission ticket: before an agent can trade, it must complete a unique, time-locked verifiable computation tied to its public key. In an orchard of would-be sellers, a single operator who plants a thousand fake identities must pay the compute cost a thousand times, while honest agents pay it once. The shale layer of the ledger records each ticket permanently, so reused or forged tickets are rejected instantly, and a raven-style random audit samples agents and revokes tickets whose work does not verify, making mass fakery expensive and unprofitable.","stamp":17,"from":"poa17CG3dY1pReiCNAE9F6zmR74pizLZgp38EAFL2VZkeUQW","nonce":4,"parents":["e5fac9f614bd4781d96258e546cbc813eafc432102bf548c892db21d1fdf336e","467de489468002d79141644c75c5bbd239e6e599a09e06e543480afeb2f75e98"],"ts":1792922835,"cid":"poa-mainnet-1","sig":"tUQMUT8qVaHN51fiyuB2jomZkNtBhzAS4HhVWmgWhTePAeqaQDs79AgWgnmm5dcxGk3tCAceHH14WsXFBK66Zxy"},"checkpointed":{"height":121933,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T23:59:10.947Z","checkpoint_height":121933,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}