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Cardless ID
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AI Impact Score 95/100 · A
Cardless ID is listed in the llmstxt.info directory as an AI-discoverable organization. Industry: Other. The website cardlessid.org provides its llms.txt at https://cardlessid.org/llms.txt. Listed since 13 June 2026.
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https://cardlessid.org/llms.txt
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# Cardless ID
> Decentralized identity credential system built on Algorand blockchain with W3C Verifiable Credentials
**Latest Version:** This documentation is also available at `https://cardlessid.org/llms.txt` for remote access with tools like `blz`.
## Project Overview
Cardless ID is a privacy-focused, decentralized identity verification platform that issues W3C-compliant verifiable credentials on the Algorand blockchain. The system enables one-time identity verification with cryptographic proofs, designed primarily for age verification across websites while maintaining user privacy.
**Key Features:**
- W3C Verifiable Credential standard compliance
- Algorand blockchain integration for credential storage
- Sybil-resistant duplicate detection via composite hashing
- Privacy-first architecture with no persistence of PII data
- Mobile wallet support for credential management
- QR code-based verification flow
**Primary Use Case:** Age verification for adult content sites (24 US states + UK, France, Germany require age verification by law)
## Architecture
### Application Structure
```
.
|-- app/
|-- components/ # React components
| |-- credentials/ # W3C credential templates
| +-- verification/ # Identity verification UI
|-- routes/ # React Router v7 routes
| |-- api/ # API endpoints
| +-- app/ # Application pages
|-- utils/ # Utility functions
|-- layouts/
[…truncated]