01
Web app
Shielded deposits, private transfers, and swaps through a consumer interface. Available today on Solana Mainnet alpha.
Company · About Cloak
Building private execution infrastructure for Solana.
Cloak Privacy Corp. builds private transfers, swaps, and treasury operations on Solana while preserving auditability and compliance. We're a team of protocol engineers and operators shipping the first zero-knowledge execution layer for the stablecoin economy.
Cloak Privacy Corp. · Shipping in public since 2026
Our mission
Make private, compliant on-chain payments the default for the next trillion dollars of stablecoin volume — without forcing companies back into custodial infrastructure.
The problem
Transparency at trillion-dollar scale.
Every transaction on Solana is publicly visible, permanently indexed, and traceable by anyone. Treasury movements, payroll payments, and trading strategies become visible to competitors and market observers as soon as they hit the chain.
Today, companies are forced to route activity through centralized exchanges just to hide it — sacrificing security, composability, and the reason they chose crypto rails in the first place.
$33T
Stablecoin transactions · 2025
Source · Bloomberg
100%
Of those transactions · permanently public on-chain
Source · By design
How we build
Three principles behind every decision.
01
Privacy by default
Treasury movements, payroll, and trading strategies stay invisible to competitors and market observers. Shielded state is the baseline — not an opt-in.
02
Auditable when needed
Viewing keys are derived from the wallet signature. Regulators, auditors, and internal teams receive verifiable reports on demand — never by default.
03
On-chain, not custodial
Cloak never holds funds. Every transaction settles directly on Solana with zero-knowledge proofs. No intermediaries, no CEX risk, no withdrawal windows.
02
Mobile dApp
The same shielded flows, optimized for phones — private send, balance checks, and on-device proof generation.
03
Cloak SDK
A TypeScript SDK that embeds private execution into any wallet, DEX, or protocol. Groth16 proofs generated client-side.
Backed by
$250K pre-seed through Colosseum Accelerator, with operational support from the Solana ecosystem.
ColosseumTurbin3BlueshiftSuperteam BrasilCompute LabsSonicTxtx
Integrations in production
Protocols using Cloak to add shielded flows to their products.
Team
Four founders. Shipping in public since day one.
AB
Arthur Bretas
Co-founder · CEO
Previously SVM engineer at SonicSVM, software engineer at Txtx (acquired by the Solana Foundation).
MF
Marcelo Feitoza
Co-founder · CTO
Previously founding engineer at Compute Labs. Builds the shielded pool, relay, and SDK.
MM
Matheus Macedo
Co-founder · COO
Previously software engineer at BTG Pactual. Operates go-to-market, partnerships, and enterprise.
VC
Victor Carvalho
Co-founder · CFO
Previously software engineer at BTG Pactual. Runs finance, compliance, and treasury.
Get in touch
Integrate Cloak, partner with us, or just say hi.
Reach us directly — we read every message. For integration conversations, a 30-minute call is usually the fastest path.