2024.06.24 Release Notes
MPCv2 - MPC Wallets for ECDSA Assets
BitGo expands support for multi-party computation (MPC) wallets for ECDSA assets, such as Ethereum, Polygon, and Cosmos SDK assets. MPC wallets enable you to bundle transactions and sign with only 1 on-chain signature, saving you money on fees, compared to multisignature wallets.
This update builds upon existing MPC functionality currently available for EdDSA assets. When creating keys for MPC wallets, there are now 2 different integration flows, depending if the asset is ECDSA or EdDSA. Transaction signing also slightly differs between the 2 elliptic curves.
To distinguish between the two elliptic curves in the code, BitGo now uses MPCv1 for EdDSA wallets and MPCv2 for ECDSA wallets. This update doesn't change the MPC version for any of your existing MPC wallets. You can determine which version of MPC a wallet uses by calling the Get wallet endpoint and checking the value of the multisigTypeVersion response field.
For simplicity, BitGo now refers to TSS wallets as MPC wallets in both the web app and the developer documentation. BitGo's implementation of MPC is still TSS. However, the MPC name better reflects current industry standards.
The MPCv2 feature is currently available only in test environment. When the feature is available in production, BitGo will send an email notification and display an announcement in the web app.
To use MPCv2, ensure you're running the latest version of Express or the JavaScript SDK, depending on your integration. For details on how to update, see Install BitGo Express and Update SDK.
Note: MPCv2 enables multiple receive addresses with automatic consolidations to the root address. This functionality requires you to Fund Gas Tanks with a sufficient balance to cover gas fees. Funding gas tanks is now a required step in the Get Started. To use MPCv2 without issues, ensure that your gas tanks are funded.
Change log
For a comprehensive list of all SDK changes, view the BitGoJS Change Log in GitHub.
Integration Guide
To learn more, see the following topics:
- Concept: Multisignature vs MPC
- Create MPC Keys
- Create Wallets
- Fund Gas Tanks
- Install BitGo Express
- Update SDK
- Withdraw from Wallet - Custody MPC
- Withdraw from Wallet - Self-Custody MPC Hot (Advanced)
- Withdraw from Wallet - Self-Custody MPC Hot (Simple)