[Task] Combine chainsig-lib, multichain-tool, & near-ca

[thisisjoshford]

Background

Currently, we have several dev tools for building applications that leverage Chain Signatures:

• https://github.com/near/chainsig-lib
• https://github.com/near/multichain-tools
• https://github.com/near/multichain-tools-rs
• https://github.com/BitteProtocol/near-ca

Each library has its own unique approach with varying levels of completeness. In favor of simplicity, one library should be chosen to become a foundational place for further development of a more feature-complete tool.

User Story

As a developer, I want an easy-to-use SDK / library that helps me build a successful chain abstraction application. As someone new to the space, I should not have to spend much time finding and evaluating several tools that do not appear to be production-ready.

Acceptance Criteria

• Determine which library or tool should become the foundational place where we will combine features from other libraries
• Combine chainsig-lib, multichain-tool, and near-ca and create a canonical library that abstracts all details of interacting with chain signatures from a frontend
• Add hooks
• Implement new interface, doesn’t support wallet signing unless individual wallet implements it, devEX can be improvised

Resources & Additional Notes

No response

Priority

🟠 P1 : High

[miaojiang]

TBD. Might transfer ownership to Near One.

[gagdiez]

Instead of combining the libraries, I would prefer if we just focus on one (multichain-tool seams like a great base) and make sure to:

• use that one in all our examples
• keep the tool polish and updated