# [Web3 Foundation](https://jam.web3.foundation/) recommended milstone : 1. Block/header data structures and serialization 2. State data structures and serialization 3. In-memory DB and Merklization 4. Non-PVM block execution/state-transition 5. PVM instancing, execution and host-functions 6. **Block-import tests** (第一階段) [JAM Prize Milestone Delivery](https://github.com/w3f/jam-milestone-delivery) [The Rules of the JAM Prize](https://jam.web3.foundation/rules) [曼谷會議的小筆記,有建議到 M1 之前的 baby steps](https://hackmd.io/qA7NNyjyQIil8oSq3aafjw) ## [Demystifying JAM](https://blog.kianenigma.com/posts/tech/demystifying-jam/) Kian Paimani, Enginerring Lead/Rust Core Develop **@paritytech**, **Polkadot Fellow** 大方向 : 基礎 -> Polkadot 1.0, 2.0 -> JAM 基礎 : - [state-transition function, what is "state"](https://paritytech.github.io/polkadot-sdk/master/polkadot_sdk_docs/reference_docs/blockchain_state_machines/index.html) - [Economic Security and Proof of Stake ](https://polkadot-blockchain-academy.github.io/pba-book/economics/economics-of-polkadot/page.html) [Gavin Wood Hackmd Note about JAM prize and FAQs](https://hackmd.io/@polkadot/jamprize) ---
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