January 23, 2026

Capitalizations Index – B ∞/21M

What are Blockchain Smart Contracts?

What are blockchain smart contracts?

What are Blockchain Smart Contracts?

What are blockchain smart contracts?More and more apps will start using smart contract technology to enable never before possible features. We’re going to build a smart contract called “proof of existence” that acts as a digital notary for any document using the Ethereum blockchain.

Code for this video:
https://github.com/llSourcell/proof_of_existence_demo

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More learning resources:

https://auth0.com/blog/an-introduction-to-ethereum-and-smart-contracts-part-2/
https://ethereumdev.io/
https://ethereum.gitbooks.io/frontier-guide/content/writing_contract.html
http://hypernephelist.com/2016/06/01/deploying-my-first-smart-contract.html
https://blog.cloudboost.io/ethereum-smart-contracts-in-a-nutshell-for-hackers-64f357715791
http://www.techracers.com/smart-contract-solidity

Tutorial: Controlling Ethereum with Python

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