# Tongo

> Confidential ERC-20 payments on Starknet

Tongo is a confidential payment protocol on Starknet that enables private ERC-20 transfers using zero-knowledge proofs and ElGamal encryption.

Tongo is a confidential payment protocol on Starknet that enables private ERC-20 token transfers using ElGamal encryption and zero-knowledge proofs. Users convert standard ERC-20 tokens into encrypted balances, transfer hidden amounts, and withdraw back to standard tokens. The protocol supports optional auditor keys for compliance and requires no trusted setup.

- Type: Project
- Sector: Privacy & Confidentiality
- Status: Active
- Founded: 2024-01-01
- Profile: https://thegrid.id/profiles/tongo

## Products

- [Tongo](https://thegrid.id/profiles/tongo): Tongo is a privacy pool on Starknet that wraps ERC-20 tokens with ElGamal encryption for confidential transfers. Users fund encrypted balances, transfer hidden amounts, and withdraw back to standard tokens. The protocol uses zero-knowledge proofs over the Stark curve with no trusted setup, and supports optional auditor keys for regulatory compliance. (Privacy Pool, Open Beta, Main Product)

## Links

- [Main](https://www.tongo.cash)
- [Documentation](https://docs.tongo.cash)
- [Twitter / X](https://x.com/tongoxyz)
- [Telegram](https://t.me/tongoxyz)
- [GitHub](https://github.com/fatlabsxyz)
- [Twitter / X](https://x.com/fatsolutionsxyz)

## Legal

This data is provided under two licensing models.

Model 1 - open data. The open data core is licensed under the Open Database License (ODbL) — a copyleft/share-alike license allowing free use, modification, and sharing for any purpose. Attribution is required: include "Powered by The Grid" linking to https://thegrid.id wherever the data is used. Derivative databases must be shared under ODbL terms. Trademarks, logos, and brand names (marked "Special TPIP") are not covered by the ODbL. For ML/AI use: training datasets that substantially extract ODbL data are Derivative Databases and must be shared under ODbL if publicly used; models must be attributed in documentation.

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
- a project's presence in The Grid's data does not imply endorsement.


- [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