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Sport Legends NFT

This project allows to fully build a new NFT collection on Ethereum block-chain and mint them through a ReactJS based website.

There are some key features:

  • Image generation is completely random, based on pre-defined percentages, different SVG layers will be combined together. This will result in different clustering groups (common, rare, super-rare).
  • The website is built with ReactJS and Web3.
  • The generated images will be pushed to IPFS for resiliency and privacy.
  • The smart-contract is ERC721 and it leaverage the openzeppelin-solidity library.
  • Utility scrits are located under ./scripts folder.

Discord Group Invite

https://discord.gg/EcgEet9G

Generate gif

convert -resize 50% -delay 20 -loop 0 metadata/images/*.png output.gif

Run the DApp Locally

Install truffle

npm install -g truffle

Install ganache-cli

npm i ganache-cli

Run ganache-cli

ganache-cli --port 7545 --quiet

Open new terminal window and clone this repository

git clone https://github.com/raelix/sport-legends.git

Install dependencies

npm install

Compile smart contract

truffle compile

Deploy smart contract to ganache

truffle migrate --reset --network rinkeby

Test smart contract

truffle console --network rinkeby

Start DApp

npm start

Open metamask browser wallet and connect network to Localhost 7545.

Import accounts from ganache-cli into the metamask browser wallet to make transactions on the DApp.

Flatten contract

npm install -g truffle-flattener
truffle-flattener contracts/SportLegends.sol > SportLegends.sol

Inkscape useful batch command

N.B. the layers must be visible (up to now we have sublayers as well so this approach needs to be revisited)

for lay in $(inkscape --query-all NFT.svg  | grep "g" | grep -v svg | awk -F, '{print $1}'); do 
inkscape NFT.svg -i $lay -j -C --export-png=testme/$lay.png; 
done

Work-arounds

export NODE_OPTIONS=--openssl-legacy-provider

COSTS

The cost = Gas Price x Amount of Gas consumed Cost = 80 Gwei * 2683987M = 214718960M Gwei = 0.21471896eth Cost = 50 Gwei * 2683987M = 134199350M Gwei = 0.13419935eth