Learn how to create truly immutable smart contracts (Ethereum / EVM) that can hold all metadata and SVG images on-chain.

0:00:00 - Intro
0:02:35 - Put metadata to struct
0:03:20 - OpenSea standard
0:05:00 - Return JSON meta from contract
0:06:40 - SVG image on-chain
0:11:00 - Testing JSON
0:13:00 - Deploy to Rinkeby testnet
0:14:00 - OpenSea test

Credits to Andy Hartnett for preparing great article and code:
  / solidity-tutorial-how-to-store-nft-metadat...  

Code: https://gist.github.com/Chmarusso/045...

#ethereum #nft #smartcontracts

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