Ruby Nodes is proud to join the genesis committee of Seal MPC, the new decentralized secrets management layer on Sui Mainnet, developed by Mysten Labs.
As one of eight operators in the inaugural 5-of-8 threshold committee, we are helping secure the cryptographic backbone for the next generation of onchain privacy. After two years of deep involvement in the Sui ecosystem, from early testnet validators to our Walrus launch partnership and an active Mainnet validator slot, this milestone represents the natural next step in our infrastructure journey.
What Is Seal MPC?
For years, Web3 developers faced a fundamental trade-off when handling sensitive data such as API keys, private credentials, or user metadata.
Traditional centralized Key Management Services (KMS) contradict the trustless nature of Web3, while building custom decentralized secrets management from scratch is highly complex and error-prone.
Mysten Labs solved this with Seal, a decentralized secrets management (DSM) service that pairs onchain access policies on Sui with offchain key servers. Today, Seal enters a new era of security with the launch of Seal MPC on Mainnet.
Enter Seal MPC: Decentralizing the Key Server
Previously, developers composed trust by utilizing independent key servers and defining access thresholds. While effective, this approach required managing multiple independent endpoints. Seal MPC (Multi-Party Computation) simplifies this architecture by introducing a decentralized committee of robust operators that jointly protect a single, shared master key.
Key properties:
• Threshold Cryptography: No single operator ever holds the full key.
• Single Aggregator Endpoint: Builders interact with one endpoint, reducing integration complexity while maintaining high security.
• Stable Onchain Policies: Key rotations can happen offchain without requiring developers to re-encrypt existing data or update smart contracts.
The 5-of-8 Threshold Committee
The Mainnet committee launches with a robust 5-of-8 threshold configuration. Any decryption request requires cryptographic shares from at least 5 of the 8 independent operators:
• Mysten Labs
• Ruby Nodes
• Unconfirmed Labs
• H2O Nodes
• Natsai
• Triton One
• NodeInfra
• Overclock
This geo-distributed setup ensures that even if individual nodes experience temporary downtime or network issues, the secrets layer remains fully operational with zero single points of failure.
Why Developers Care
• Same Developer Experience: Integrates seamlessly using the same Seal SDK (v1.1.0+).
• Zero Policy Changes: Use the same Sui Move policies and encryption flows as before.
• Hybrid Models: Combine independent key servers with MPC committees depending on your application's trust requirements.
Ruby Nodes' Bare-Metal Commitment
At Ruby Nodes, we don't believe in outsourcing infrastructure. Our Seal MPC node and API gateways run on our own bare-metal hardware. By avoiding public cloud monopolies, we provide:
• Deterministic latency and execution.
• Protection against BGP hijacking and routing attacks through high-performance networking.
• Guaranteed 99.99% uptime for critical decryption requests.
Build the Future of Onchain Privacy
From encrypted storage on Walrus to secure enclaves, programmable wallets, and agentic commerce — Seal MPC provides the foundation for true onchain data autonomy.
Ready to integrate?
• Explore the official Seal Documentation.
• Connect directly via the Ruby Nodes Seal API Gateway.
• For custom private infrastructure, reach out: [email protected]
