Hands-On Blockchain for Python Developers

Writing the smart contract for the Twitter–like application

We are now going to build a censorship resistant, Twitter-like application. This means that even the owner of the smart contract could not delete a tweet from the user of the smart contract. This Twitter-like application is very simple; there is no option of following, liking, or retweeting; it just consists of tweets. In addition, the user cannot delete their tweets and they must be less than 32 bytes, which is even shorter than the original tweet limit in Twitter!

We now come back to our Populus project to modify our project.json file. Add this to project.json:

"ganache": {   "chain": {     "class": "populus.chain.ExternalChain"   },   "web3": {     "provider": { "class": "web3.providers.HTTPProvider", ...