Sleepy Cartoon Characters

Submission for https://nft.replit.com/ hackathon

Value proposition

Create a fun experience to learn not to buy/sell NFTs too fast, i.e. before a good night sleep

Principle

• A NFT collection of 40 Sleepy Cartoon Characters on the Ethereum blockchain (Rinkeby testnet)
• Each character has a unique sleeping duration between 9 and 48 hours.
• The sleeping duration depends on the traits of the character, e.g. a smiling characters needs less sleep than a sad one. Rare characters have a red element and the longest sleeping need!
• This sleeping duration needs to be respected between buying a NFT and listing it for sale.
• Otherwise the character goes in hibernation between 9 and 48 days!
• When a characters is asleep, it appears with a grey background. When it hibernates, it goes black!
• One mint per wallet. The minter wallet address appears as a watermark on the NFT image.

Monetization

0.1 ETH per mint

Directory

• api -> cloudflare worker
• app -> react app
• smart-contract -> solidity for https://rinkeby.etherscan.io/address/0xbf3c7e598211f33b765f304521959173bb77f6da
• scripts
  • init.js to initialize small DB on cloudflare KV
  • pinata.js to create ipfs files
  • cron.js backend script updating data every minute (should be moved in api for consistency, see https://developers.cloudflare.com/workers/examples/cron-trigger/)

Known limitations

• Offer acceptation in WETH and transfers not taken into account

Credits

• https://freesvg.org/cartoon-mouth-and-eyes for art elements
• https://app.buildspace.so/projects/CO77556be5-25e9-49dd-a799-91a2fc29520e for contract and app skeletons