# Privacy Cash

> Transfer SOL privately

Privacy Cash enables private cryptocurrency transfers on Solana through zero-knowledge proof technology and compliance-integrated privacy pools.

Privacy Cash is a privacy protocol on Solana enabling users to shield and withdraw cryptocurrency assets through zero-knowledge proof mechanisms. The protocol uses Merkle tree commitments and cryptographic proof systems to break the on-chain link between deposits and withdrawals while maintaining selective disclosure capabilities for regulatory compliance. Users deposit assets into shared privacy pools and can later withdraw to different addresses without transaction linkage.

- Type: Project
- Sector: Privacy & Confidentiality
- Status: Active
- Founded: 2025-06-01
- Profile: https://thegrid.id/profiles/privacy_cash

## Products

- [Privacy Cash](https://thegrid.id/profiles/privacy_cash): Privacy Cash implements a zero-knowledge proof privacy protocol on Solana, enabling shielded deposits and unlinkable withdrawals through Merkle tree commitments. The protocol processes deposits into privacy pools and facilitates withdrawals to arbitrary recipient addresses using zk-SNARK cryptographic proofs, maintaining transaction confidentiality while supporting selective disclosure for compliance requirements. (Privacy Pool, Live, Main Product)
- [Privacy Cash SDK](https://thegrid.id/profiles/privacy_cash): Privacy Cash SDK provides developer integration tools for interacting with Privacy Cash smart contracts, enabling programmatic deposits, withdrawals, and balance queries for SOL and USDC through the privacy protocol. (Developer Tooling, Live)

## Links

- [Main](https://www.privacycash.org)
- [Documentation](https://github.com/Privacy-Cash/privacy-cash)
- [GitHub](https://github.com/Privacy-Cash)
- [Discord](https://discord.com/invite/8guY9uXBvA)
- [Twitter / X](https://x.com/theprivacycash)

## Legal

This data is provided under two licensing models.

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Model 2 - commercial licenses. The Grid Data Service (TGDS) is also available as a commercial license. See [Web Services Terms](https://about.thegrid.id/legal/web-services-terms) for commercial use that is not covered by the open data service.

The following applies to both licensing models.
- All data is provided AS IS with no guarantees of accuracy.
- The Grid does not provide investment, legal, or tax advice, and
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- [Data Licensing & Disclaimers](https://about.thegrid.id/legal/data-licensing-and-disclaimers): Licensing models and disclaimers
- [Open Data (ODbL)](https://about.thegrid.id/legal/open-data): Open Database License terms and scope for The Grid's open data service.
- [Attribution Guidelines](https://about.thegrid.id/legal/open-data-attribution-guidelines): How to attribute The Grid's data when using the open data service.
- [Web Services Terms](https://about.thegrid.id/legal/web-services-terms): commercial Terms for using data services.
- [All Legal Documents](https://about.thegrid.id/legal): Full index of terms, policies, and disclosures

## Optional

- [TGS Field Descriptions](https://github.com/The-Grid-Data/workspace-public/blob/main/references/tgs-field-descriptions.md): Schema field definitions for The Grid's data model
- [TGS JSON Structure](https://github.com/The-Grid-Data/workspace-public/blob/main/references/tgs-json-structure.md): Data model structure and relationships
- [Product Type Definitions](https://github.com/The-Grid-Data/workspace-public/blob/main/references/product-type-definitions.md): Definitions for each product type
- [Product Type Classification](https://github.com/The-Grid-Data/workspace-public/blob/main/references/product-type-classification.md): Guide for classifying products into types
- [Grid MCP Guide](https://github.com/The-Grid-Data/workspace-public/blob/main/grid-search/skills/grid-query/references/grid-mcp-guide.md): How to query The Grid programmatically via MCP