**Proponent:** 12wWLUd5qMzLFGqBsMnHLVFeTuYJwuo5ygMAxuSywrBX1XSF

**Date:** 07.11.2022

**Requested DOT:** ($172,500) ~27,080 DOT

**Contact:** Frederik Gartenmeister (frederik@centrifuge.io)

***
This is a Polkadot treasury proposal by **Centrifuge** to fund the development of FUDGE (FUlly Decoupled Generic Environment for substrate-based chains). FUDGE provides a simple and generic way to interact with and manipulate the database of a substrate-based blockchain. This includes building and importing blocks locally without any kind of network or consensus, as also changing existing state and finalizing it without the need of forging a new block.

The currently most obvious use-case for FUDGE are local integration tests as the library drastically reduces time and overhead for these. But the library is furthermore useful as a core building block around clis in the Substrate ecosystem. E.g. a cli for forking-off a database of a node, tooling around analysing a chain in various states (i.e. at variaous blocks).

There already exists a PoC version of the library ([https://github.com/centrifuge/fudge](https://github.com/centrifuge/fudge)) and the library is actively used by the Centrifuge team for integration tests ([https://github.com/centrifuge/centrifuge-chain/tree/main/runtime/integration-tests](https://github.com/centrifuge/centrifuge-chain/tree/main/runtime/integration-tests)).

The full proposal can be found here: [https://centrifuge.hackmd.io/@rxJQ-iCrT9eYElX4L2WMmA/BkMfLwPli](https://centrifuge.hackmd.io/@rxJQ-iCrT9eYElX4L2WMmA/BkMfLwPli)

This proposal seeks funding to maintain the substrate-api-client from January to June 2024. The proposal emphasizes the library's role as a common good for the Polkadot ecosystem and offers a discounted hourly rate of 165 CHF for their services. Monthly progress reports will be shared on Polkassembly, and updates will be communicated on GitHub and the Polkadot Direction channel on Matrix.

- Centrifuge is proposing a funding request for the development of FUDGE.
- FUDGE is a library that helps interact with and manipulate the database of a substrate-based blockchain.
- It reduces time and overhead for local integration tests and can be used as a core building block for clis in the Substrate ecosystem.
- There is already a PoC version of the library and it is actively used by the Centrifuge team.
- The full proposal can be found at the provided link.

#290 Treasury Proposal by Centrifuge: FUDGE - Core library for local integration-tests in Substrate

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