# Verify events across chains with ICCF · Learn Chromia

> Use cross-chain event confirmation to build secure user access control between blockchains.

Source: https://chromia.com/learn/iccf-course/

[Learn](https://chromia.com/learn/)Verify events across chains with ICCF

# Verify events across chains with ICCF

Use cross-chain event confirmation to build secure user access control between blockchains.

Intermediate6 lessonsRell

[Start course](https://chromia.com/learn/iccf-course/introduction/)

**0** / 6lessons done

1. [01Confirm Events Across Blockchains](https://chromia.com/learn/iccf-course/introduction/)
2. [02Set up your project](https://chromia.com/learn/iccf-course/setup/)
3. [03System overview](https://chromia.com/learn/iccf-course/system-overview/)
4. [04Subscription chain](https://chromia.com/learn/iccf-course/subscription-chain/)
5. [05Digital warehouse chain](https://chromia.com/learn/iccf-course/digital-warehouse-chain/)
6. [06Testing the dapp](https://chromia.com/learn/iccf-course/manual-testing/)