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Solana MPC Trading Example

Perform on-chain trading on Solana using Sodot MPC​

This example demonstrates how to integrate a Sodot MPC cluster with Solana for secure, distributed key management in an on-chain DeFi trading context. The project showcases 2-of-3 threshold signing using Ed25519 keys distributed across 3 Vertex servers.

The code and full technical details can be found in the Github repo.

What This Example Shows​

  • Distributed Key Generation: Create an Ed25519 MPC key split across 3 Vertex servers
  • Threshold Signing: Sign Solana transactions with only 2 of the 3 servers (high-availability)
  • On-Chain Execution: Build and submit SOL transfer transactions to Solana devnet
  • Key Persistence: Store key metadata locally to reuse keys across runs of the example

Architecture​

The example uses a 2-of-3 threshold configuration:

  1. Key Generation Phase

    • All 3 Vertex servers participate in distributed key generation
    • Each server holds a share of the private key
    • The combined public key is derived and converted to a Solana address

  2. Signing Phase

    • Only 2 of the 3 servers are needed to sign (threshold = 2)
    • Servers coordinate via a relay room to produce a valid Ed25519 signature
    • The transaction is verified locally before submission to Solana

API Flow​

1. POST /create-room           → Create coordination room for MPC operation
2. POST /ed25519/create        → Initialize keygen on each Vertex
3. POST /ed25519/keygen        → Perform distributed key generation
4. POST /ed25519/derive-pubkey → Derive Solana public address
5. POST /ed25519/sign          → MPC signing with threshold parties

Use Cases​

This pattern is ideal for:

  • DeFi Trading Bots: Secure key management for automated trading strategies
  • Institutional Custody: Distributed signing authority across multiple parties
  • Exchange Infrastructure: Hot wallet security with threshold controls

Getting Started​

  1. Clone the repository and configure your Vertex API keys
  2. Run cargo run to generate an MPC key and Solana address
  3. Fund the address on devnet via the Solana Faucet
  4. Run again to execute a signed SOL transfer

See the README for detailed setup instructions.