Please describe your proposed solution

Building a partnerchain is the equivalent of building a new blockchain. One could even argue that the technical challenges are even more complex since it requires the integration with the Cardano protocol. The available resources and SDKs provided by IOG go a long way simplifying this development process, but the process still requires a huge effort.

Our solution to this problem involves building a fully functional partnerchain within the context of a particular use-case that development teams can use as a baseline or reference for their own implementations.

Our reference partnerchain will provide the following benefits for developers:

• An example of how to leverage IOGs SDK
• An example of how to implement a use-case specific Substrate chain
• An example of how to exchange assets between Cardano - Partnerchain

Given the diversity of use-cases, deciding which one to use for the reference implementation is not an easy choice. The short list of possibilities is:

• DePin chain
• DAO chain
• Game chain
• Decentralized Identity Chain (DID)
• DeFi chain
• <s>Oracle chain</s> (excluded since there are other projects already working on this)
• <s>Privacy chain</s> (excluded since we already have Midnight)

To make this choice, we'll execute a community survey at the beginning of the development process asking for their preference. The result of the survey will define the use-case we'll use for the reference implementation. Since the scope / effort defers between each option, the amount of features to develop in each case will accommodate to the available budget / time.

Please define the positive impact your project will have on the wider Cardano community

The potential benefits of a rich partnerchain ecosystem on top of Cardano have been well extensively discussed and can be summarized as:

• allowing new use-cases that require a different set of trade-offs at the protocol level (consensus, finality, etc) by extending Cardano capabilities instead of forcing projects to opt for other chains.
• leveraging the extensive and robust community of SPOs to serve as providers for new chains. This provides a new revenue stream for SPOs, effectively making the Cardano network more secure.

All of the above benefits won't live to its potential if the development effort is to high for any project to implement a partnerchain. A reference implementation of a partnerchain will improve our chances of building a rich and active partnerchain ecosystem.

What is your capability to deliver your project with high levels of trust and accountability? How do you intend to validate if your approach is feasible?

TxPipe is an active member of the Cardano ecosystem

TxPipe has been developing open-source tools for the Cardano ecosystem for over 3 years and we're not going anywhere. Evidence of our commitment can be found by evaluating the continuous activity of our public code repositories.

Experience developing in the Cardano ecosystem

TxPipe has helped developed several dApps for the Cardano ecosystem. This experience allows us to evaluate the feasibility of the project and its potential benefit from a developer's perspective. We've also participated in development of chains using the released version of the IOG's Partnerchain SDK.

Successful Catalyst proposals

We have successfully completed several Catalyst proposals. This may serve as evidence that our team has the required capabilities to fulfill these type of projects.

Development process will be public and open-source

Both the output and the development process will be public and open-source. This approach provides an easy way for the Catalyst team and the Cardano community to evaluate the progress at each step of the process.

What are the key milestones you need to achieve in order to complete your project successfully?

Milestone 1: Project scaffolding

Milestone outputs:

• The selection by the community of the use-case to implement
• A stub of the Substrate node using existing templates

Acceptance criteria:

• All components stubs are ready for feature development
• A CI/CD pipeline is in place to build / integrate the different artifacts

Evidence of milestone completion:

• Publicly available source-code containing the project scaffold

Milestone 2: Generic Substrate Chain

Milestone outputs:

• A generic Substrate-based node for a new chain
• Instructions on how to develop on on top of the basic node

Acceptance criteria:

• A developer is able to clone and compile the Substrate node
• A developer is able to run a local instance of the Substrate node
• A developer is able to use the existing node to build feature on top

Evidence of milestone completion:

• Publicly available source-code of the generic Substrate node
• Link to documentation site with development instructions (URL TBD)
• Video showing how to start developing on top of the Substrate node

Milestone 3: Cardano Integration

Milestone outputs:

• A Substrate-based node that integrates the Partnerchain SDK
• An instance of the partnerchain governance contracts on Cardano
• Tutorial on how to run the node as part of the existing partnerchain

Acceptance criteria:

• A developer is able to clone and compile the updated Substrate node
• A developer is able to run the node as a member of the partnerchain

Evidence of milestone completion:

• Publicly available source-code of the updated Substrate node
• Link to documentation site with development instructions (URL TBD)
• Video showing how to setup the node to participate in the partnerchain

Milestone 4: Use-case Specific Features

Milestone outputs:

• A Substrate-based node that implements features of the selected use-case
• Tutorial describing the process of adding custom features to a Substrate node

Acceptance criteria:

• A developer is able to clone and compile the updated Substrate node
• A developer is able to run the node as a member of the partnerchain

Evidence of milestone completion:

• Publicly available source-code of the updated Substrate node
• Link to documentation site with development instructions (URL TBD)
• Video showing the new features and how to access them in the codebase

Milestone 5: Development Tutorial

Milestone outputs:

• A step-by-step tutorial of how the final Partnerchain node was developed
• A binary release of the complete Substrate node to use as example

Acceptance criteria:

• A developer can follow the tutorial to replicate the Substrate node development
• A developer is able to install and run the binary release of the Substrate node

Evidence of milestone completion:

• Link to documentation site containing the tutorial (URL TBD)
• Link to binary release for the complete Substrate node (URL TBD)
• Video describing the available content and artifacts

Final Milestone: Final Report

Milestone outputs:

• publicly available source-code of the complete system
• publicly available documentation site with tutorial &amp; support artifacts
• a video showcasing the final output of the project
• a final report describing the project process and outcome

Acceptance criteria:

• the tutorial facilitates the task of building new parternchain
• the final video complies with Catalyst requirements
• the final report complies with Catalyst requirements

Evidence of milestone completion:

• Source-code available in the Github repository
• Public documentation site (URL TBD)
• Final video uploaded to Google drive
• Final report uploaded to Google drive

Who is in the project team and what are their roles?

TxPipe members involved in this project will be:

• Santiago Carmuega - Github
• Federico Weill - Linkedin
• Rodrigo Suaya - Linkedin
• Felipe Gonzalez - Github
• Paulo Bressan - Github
• Manuel Gunther - Linkedin
• Franco Luque - Github
• Alejandro Gadea - Github

Please provide a cost breakdown of the proposed work and resources

FTE = Full-time equivalent

Software development:

• Rust developer: 1 FTE x 5.5 months = ₳ 141,429
• Technical Writer: 1/2 FTE x 2 months = ₳ 8,571

Infrastructure:

• Site-reliability Engineer: 1/2 FTE x 3 months = ₳ 34,286

Project Management:

• Project Manager: 1/4 FTE x 6 months = ₳ 12,857

No dependencies.

How does the cost of the project represent value for money for the Cardano ecosystem?

The bulk of the budget falls under the software development category. TxPipe has extensive experience in the field, allowing it to provide good value for money. The hourly rates are defined using fair market prices. The estimation for the level of effort takes into account all of the optimizations that our team is capable of providing after years of experience developing software solutions in the Cardano ecosystem.