Arcium

Arcium is a decentralized confidential computing network that enables trustless, verifiable computation over encrypted data on Solana. Rather than requiring data to be decrypted before processing — the core vulnerability in conventional systems — Arcium's network allows sensitive inputs to remain encrypted throughout computation. No single node, operator, or third party can read the underlying data at any point in the process.

Origins: From Elusiv to Arcium

The project traces its roots to Elusiv, a privacy application that launched on Solana in 2022 and raised a $3.5 million seed round in November of that year. The Elusiv team recognized that private transactions were a narrow application of a much broader unsolved problem: general-purpose encrypted computation on public blockchains. In 2024, the team rebranded and restructured around that larger vision, launching Arcium as a programmable confidential computing layer.

Core Technology: MPC eXecution Environments

Arcium's fundamental building block is the MPC eXecution Environment (MXE). Each MXE is a configurable, isolated computation context where sensitive workloads run across a distributed set of nodes using Multi-Party Computation (MPC). The protocol splits each input into secret shares, distributes those shares across independent nodes, and allows the nodes to compute jointly over the encrypted shares without any individual node gaining access to the underlying values. Only the final output is decrypted.

The network achieves malicious security with dishonest majority protection — meaning computation remains correct and private even if a majority of nodes in a given MXE attempt to cheat or collude. This guarantee is stronger than most MPC deployments, which assume only semi-honest adversaries.

Arcium integrates three cryptographic primitives under a unified interface: MPC for the primary computation layer, Fully Homomorphic Encryption (FHE) for additional data protection, and Zero-Knowledge Proofs (ZKPs) for output verification. Developers interact with these capabilities through Arcis, a Rust-based domain-specific language for writing confidential programs. On the integration side, Solana programs invoke MXEs via Cross-Program Invocation, keeping confidential applications anchored to Solana mainnet rather than operating as a separate chain or layer.

Onchain coordination, finalization, and application integration all run through Solana. The design is also chain-agnostic at the architectural level, positioning Arcium as a general confidential compute layer rather than a Solana-only product.

Use Cases

Confidential DeFi is the most mature application category. MXEs enable dark pools, sealed-bid auctions, and front-running-resistant order books — mechanisms that require hiding order information from other participants while still settling on a public ledger.

Confidential Payments are addressed through C-SPL, Arcium's Confidential SPL Token Standard. C-SPL extends Solana's SPL Token and Token-2022 models with MPC-backed encrypted balances, allowing users to transact without exposing amounts or participants on chain.

Encrypted AI is a declared roadmap priority under the product name Arcium Blackthorn. The target is encrypted inference and model training — allowing AI models to operate over sensitive inputs (medical records, proprietary datasets, personal data) without the compute provider seeing the underlying data. This remains in development as of mid-2026.

General confidential applications include hidden-information games and any use case that requires one party to prove a computation was performed correctly without revealing the inputs.

Ecosystem Applications

Several teams have already deployed on Arcium's confidential computing layer. Crafts runs sealed-bid auctions where bids are encrypted until settlement. Bench operates an encrypted opportunity market for financial data. Dinaro provides a confidential payments wallet built on C-SPL. Melee is a prediction market designed to resist front-running by hiding position data until resolution. Umbra, a broader privacy application in the ecosystem, raised over $155 million in ICO commitments during an October 2025 MetaDAO offering, signaling significant market demand for Arcium-adjacent infrastructure.

Team and Talent

Arcium is led by four co-founders: Yannik Schrade (CEO), Nico Schapeler (CTO), Julian Deschler (CSO), and Lukas Steiner (COO). In May 2025, the company acquired Inpher, a specialist MPC firm, adding co-founders Dr. Jordan Brandt and Professor Dr. Dimitar Jetchev to the team. The Inpher acquisition deepened the cryptographic research capacity underpinning the network.

Funding and Backers

Arcium has raised approximately $14 million across disclosed rounds. A $5.5 million strategic round led by Greenfield Capital included participation from Coinbase Ventures, Heartcore Capital, Longhash VC, L2 Iterative Ventures, Staking Facilities, and Everstake. A $4 million CoinList community round in March–April 2025 was priced at a $200 million fully diluted valuation. Angel backers include Anatoly Yakovenko (Solana co-founder), Keone Han (Monad co-founder), Mert Mumtaz (Helius Labs), Santiago R Santos, Kenny Li (Manta Network), and Lucas Bruder (Jito). Arcium is also a member of the NVIDIA Inception Program.

$ARX Token and Network Status

The $ARX token launched on June 22, 2026, with a total fixed supply of one billion tokens. At launch, 208.8 million tokens (20.88%) were immediately circulating, with the remainder vesting over time. The token priced at approximately $0.40–$0.43, implying a fully diluted valuation in the $395–$438 million range.

$ARX serves four functions in the network: paying fees for on-chain and off-chain computation requests; staking to secure the network with performance-based rewards; stake-weighted computation scheduling (operators with more stake are selected more frequently for MXE execution); and on-chain governance, where voting power scales with lockup duration. The supply mechanics include controlled inflation during low demand periods to compensate node operators, and fee burning when demand is high.

Arcium's Mainnet Alpha launched in February 2026, prioritizing reliability and controlled node participation before opening the network more broadly. By early June 2026, the network had processed over one million confidential computations. The prior testnet phase validated developer interest at scale: over 3,000 distributed nodes, more than 30 deployed applications, and more than 300 hackathon submissions.

Significance for Solana

Arcium addresses a structural gap in blockchain architecture: the tension between the transparency required for trustless settlement and the privacy required for most real-world applications. By embedding encrypted computation directly into Solana's execution environment — using Solana for coordination while handling sensitive logic inside MXEs — Arcium enables use cases that are not possible on a fully transparent chain. Confidential DeFi, private payments, and encrypted AI inference are all applications where the absence of a confidential compute layer has historically blocked adoption. Arcium positions itself as the infrastructure layer that makes these categories viable on Solana.