Controlling a NEAR account
Imagine acting on behalf of another Near account - without ever holding its private key. Sounds futuristic? It’s possible today, thanks to Chain Abstraction and Multi-Party Computation (MPC), and this tutorial will walk you step-by-step through the entire process of transferring 0.1 NEAR on behalf of another Near account.
How It Works
Behind the scenes, a smart contract constructs a valid transaction on behalf of a user and forwards it to an MPC contract for signing.
The key advantage of this approach is that no single entity possesses the private key — ensuring enhanced security and decentralization.
The complete source code for the smart contract used in this tutorial, along with scripts for playground simulation, is available in the GitHub repository.
The contract is rolled out on testnet at broken-rock.testnet, feel free to use it for your own purposes if you don't want to dig deeper into deploying it on your own.
What You Will Learn
In this tutorial, you will learn how to:
- Prepare Near account to be fully controlled via MPC
- Build a transfer transaction and get it signed in a smart contract
- Broadcast a signed transaction into the network over RPC.
