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OpenBrush follow-up Grant update (#735)
* OpenBrush follow-up grant * Remove 6th milestone * Increased the time and cost for milestone 3 and 4. Added additional deliveries in milestone 4. Co-authored-by: xgreenx <[email protected]>
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‎applications/openbrush-follow-up.md

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### Overview
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**We have decided to describe a full roadmap of an OpenBrush here, with estimates. However, the funding we request at this stage is for milestones 3-6.**
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**We have decided to describe a full roadmap of an OpenBrush here, with estimates. However, the funding we request at this stage is for milestones 3-5.**
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* **Total Estimated Duration:** 10 weeks(+ time for approving changes in ink! and PSP repositories)
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* **Total Estimated Duration:** 12.5 weeks(+ time for approving changes in ink! and PSP repositories)
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* **Full-Time Equivalent (FTE):** 2.5
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* **Total Costs:** 39,000 USD
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* **Total Costs:** 49,500 USD
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### Previous work
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#### Milestone 3. Reduce the size of Erc20 contract.
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* **Estimated Duration:** 3 weeks
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* **Estimated Duration:** 4 weeks
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* **FTE:** 1.5
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* **Costs:** 9,000 USD
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* **Costs:** 12,000 USD
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| Number | Deliverable | Specification |
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| ----- | ----------- | ------------- |
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#### Milestone 4. Pre-release - Standardization of tokens contracts. Implement extensions for contracts. Documentation.
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* **Estimated Duration:** 3 weeks(+ time for PSP approving)
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* **Estimated Duration:** 4.5 weeks(+ time for PSP approving)
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* **FTE:** 2.5
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* **Costs:** 15,000 USD
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| Number | Deliverable | Specification |
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| ----- | ----------- | ------------- |
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| 0a. | License | MIT |
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| 0b. | Documentation | We will provide inline documentation for macros, create a tutorial on how to use macros in your own project, with a detailed description of how it works inside. |
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| 0c. | Testing Guide | We will add more tests to cover all macros, update tests according to new changes. |
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| 1. | Create Proposal for Fungible token | We will create a proposal for standardization of Erc20 token in case of ink! and `contract-pallet`. Based on the final decision regarding the proposal update the implementation in library. |
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| 2. | Implement extensions for tokens | We will implement extensions for Erc20, Erc721 and Erc1155 tokens. |
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| 3. | Create Proposal for Non Fungible token and Multi token | We will create proposals for NFT and multi token, when proposal for FT token will be approved. Based on the decisions of these approves, we will update implementation in library. |
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* **Costs:** 22,500 USD
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| Number | Deliverable | Specification |
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|--------|---------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| 0a. | License | MIT |
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| 0b. | Documentation | We will provide inline documentation for macros, create a tutorial on how to use macros in your own project, with a detailed description of how it works inside. |
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| 0c. | Testing Guide | We will add more tests to cover all macros, update tests according to new changes. |
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| 1. | Create Proposal for Fungible token | We will create a proposal for standardization of Erc20 token in case of ink! and `contract-pallet`. Based on the final decision regarding the proposal update the implementation in library. |
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| 2. | Implement extensions for tokens | We will implement extensions for Erc20, Erc721 and Erc1155 tokens. |
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| 3. | Create Proposal for Non Fungible token and Multi token | We will create proposals for NFT and multi token, when proposal for FT token will be approved. Based on the decisions of these approves, we will update implementation in library. |
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| 4. | Use original ink! instead of our own | We will use ink! `3.0-rc6` version(or a new one if it will be compatible) instead of our own version of ink!. |
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| 5. | Refactor the contracts to be compatible with PSPs | We will refactor the contracts according to the PSP. |
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| 6. | Refactor the structure of the OpenBrush to provide agnostic traits | We will refactor the structure of the OpenBrush to provide traits for each implementation of the contract without restriction and implementation related information:<br/> - Traits will be defined in a separate module.<br/> - The default implementation of that trait for a contract will be provided via unstable feature `#![feature(min_specialization)]`.<br/> - We will provide a new macro to generate a wrapper around a trait. That wrapper can be used for cross-contract calls. So the user is enough of the trait definition to do a cross contract call. |
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#### Milestone 5. Release - Contribution to ink!
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