> ## Documentation Index
> Fetch the complete documentation index at: https://grailx.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Invisible watermarks for product authentication, supply chain traceability, and anti-counterfeiting.

# SQR

SQR is a platform for embedding invisible watermarks into product images, creating digital twin records, and optionally minting ERC-721 NFTs for on-chain provenance.

## What you can do

<CardGroup cols={2}>
  <Card title="Embed watermarks" icon="eye-slash" href="/guides/watermarking">
    Encode invisible identifiers into any product image — surviving print, photo, and compression.
  </Card>

  <Card title="Register records" icon="fingerprint" href="/quickstart">
    Create digital twin records with structured metadata tied to a unique watermark ID.
  </Card>

  <Card title="Mint NFTs" icon="cube" href="/guides/nft-minting">
    Anchor records on-chain with ERC-721 tokens on Ethereum Sepolia.
  </Card>

  <Card title="Scan & verify" icon="qrcode" href="/quickstart">
    Decode watermarks from photos to look up provenance and ownership instantly.
  </Card>
</CardGroup>

## How it works

1. **Upload** an image and provide product metadata
2. **SQR encodes** an invisible watermark into the image and stores the record
3. **Distribute** the watermarked image on packaging, labels, or digital assets
4. **Scan** any photo of the label to decode the watermark and retrieve the record
5. **Optionally mint** an NFT to anchor ownership on-chain

## Quick links

<CardGroup cols={3}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Create your first record in under a minute.
  </Card>

  <Card title="Authentication" icon="key" href="/getting-started/authentication">
    Get an API key and start making requests.
  </Card>

  <Card title="API Reference" icon="square-terminal" href="/api-reference">
    Full endpoint documentation with interactive playground.
  </Card>
</CardGroup>