# SureMark Digital

> Know who you're speaking with.

SureMark Digital provides cryptographic identity verification tools that help organizations and individuals detect and prevent AI-powered impersonation and deepfake attacks.

SureMark Digital helps organizations and individuals combat AI impersonation by issuing cryptographic identity credentials. Users can verify counterparties before high-stakes transactions, authorize digital content across platforms, and check a public registry of verified credential holders. The platform uses digital signature provenance rather than AI-based detection to confirm identity.

- Type: Company
- Sector: Security
- Status: Active
- Profile: https://thegrid.id/profiles/suremark_digital

## Products

- [SureCircle Identity Assurance](https://thegrid.id/profiles/suremark_digital): SureCircle Identity Assurance is a cryptographic identity verification service for organizations facing AI impersonation risks. Credential holders verify themselves by signing a one-click identity challenge with their unique cryptographic key, producing audit-ready proof of identity in under 20 seconds. The service addresses executive deepfakes, vishing, and business email compromise by using provenance-based credentials that cannot be replicated by AI. (Decentralised Identity, Live, Main Product)
- [Verified Web](https://thegrid.id/profiles/suremark_digital): Verified Web is a content authorization platform for public figures and organizations. Credential holders issue digital signatures on the content they publish across social media, news platforms, and hosted files. Audiences verify authenticity through a searchable public registry, inline browser extension badges, or a bio link pointing to the credential holder's verified profile. The platform is designed for bulk credentialing of rosters managed by talent agencies, PR firms, sports leagues, and management companies. (Decentralised Identity, Live)

## Links

- [Main](https://www.suremark.digital)
- [Blog](https://www.suremark.digital/blog)
- [Documentation](https://support.suremark.digital/support/home)
- [Privacy policy](https://www.suremark.digital/privacy-policy)
- [Terms of Service](https://www.suremark.digital/terms-of-use)
- [Twitter / X](https://x.com/SuremarkDigital)
- [LinkedIn](https://linkedin.com/company/suremark-digital)
- [Instagram](https://instagram.com/suremark.digital)
- [YouTube](https://youtube.com/@UCQSqU7WS_h-mtuleRAGRdWw)

## 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