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://www.slideshare.net/intrins1k/ethereum-meetup-presentation-01042017-70716809 https://www.youtube.com/watch?v=R_CiemcFKis 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 http://ecomunsing.com/tutorial-controlling-ethereum-with-python

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