PostIt was inspired by the old school sticky notes, which you can take notes and check the information later.
This dapp allows you to manage and save your information on the blockchain in a decentralized and permissionless way.
Also it has a function where a creator (owner) can add (and remove) a collaborator to help update your notes.
The notes are saved as NFTs (ERC721) and the metadata is managed through Pinata Service on IPFS.
It has security protection against bots where somebody willing to use the dapp should deposit a stake in order to create notes.
The project uses solidity language for developing Contracts, also standard ERC721 OpenZeppelin libraries for the minting notes as NFTs, the metadata is saved on IPFS (through Pinata Service).
The backend is built with nodejs, the security for sessions (login) are managed by using wallet sign-in with "web3-token" library and JWT, also here are used Pinata API to the manage the metadata.
Smart contracts are deployed in Mumbai Polygon testnet, In the future it will help to reduce the gas fee costs in deploying and minting in a unexpensive blockchain like Polygon Mainnet.