# Arcium

> Arcium: Confidential compute network. Technology: garbled-circuit MPC.

Part of the Soda Labs Privacy Hub, a neutral directory of the on-chain privacy
landscape: https://www.sodalabs.xyz/privacy-hub

## Key facts

- Entry type: Privacy project
- Category: Confidential compute network
- Technology: Garbled-circuit MPC (MPC-GC)
- Website: https://www.arcium.com
- Tags: MPC, Solana
- Canonical page: https://www.sodalabs.xyz/privacy-hub/arcium

## Overview

Arcium is the most substantial MPC effort on Solana, running an encrypted execution engine that handles hundreds of thousands of confidential computations a day and already carries third-party products such as the Umbra wallet. The design gives builders a choice of trust model rather than one setting for everyone: a stronger mode that halts rather than continue under a dishonest majority, and a faster mode tuned for honest-but-curious operators. The network is in mainnet alpha on an operator set Arcium permissions, and the team arrived at this design as a second act, after winding down its earlier protocol, Elusiv, and rebuilding around encrypted computation.

## About Garbled-circuit MPC

Several parties jointly evaluate a function over encrypted inputs using garbled circuits and secret sharing, so no single party ever holds the plaintext. Compared side by side with the other approaches at https://www.sodalabs.xyz/taxonomy.

## Sources

- [Docs](https://docs.arcium.com)
- [How the network works](https://docs.arcium.com/introduction)
- [Umbra, built on Arcium](https://www.theblock.co/post/394892/umbra-opens-privacy-wallet-to-the-public-on-solana-powered-by-arciums-encrypted-execution-engine)

## Related entries

- [Umbra](https://www.sodalabs.xyz/privacy-hub/umbra): Shielded wallet on Solana
- [Nillion](https://www.sodalabs.xyz/privacy-hub/nillion): Blind-compute network
- [Partisia](https://www.sodalabs.xyz/privacy-hub/partisia): MPC L1
- [Renegade](https://www.sodalabs.xyz/privacy-hub/renegade): On-chain dark pool
- [Bubble](https://www.sodalabs.xyz/privacy-hub/bubble): Enterprise confidential finance
- [COTI](https://www.sodalabs.xyz/privacy-hub/coti): Confidential EVM L2 · in production