# Verify all the sources by Ligi

- Channel: [Devcon](https://streameth.org/devcon)
- Date: 2020-10-09
- Duration: 23:39
- Topics: blockchain, smart contracts, distributed ledger, ethereum, ethereum solidity, solidity, solidity summit, language design
- Watch: https://streameth.org/watch/yt-uYvbBP3GEFk
- YouTube: https://www.youtube.com/watch?v=uYvbBP3GEFk

## Description

"In this talk you will learn about source verification. These topics will be covered:
 - Why is it needed?
 - How is it done?
 - How can it be decentralized?
 - How can you use it?
 - What is wrong with NatSpec and RadSpec?
 - What are the next steps?"