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Represent JSON Object On Starknet 💫

An experimental project for representing any JSON data structure as a Starknet smart contract. It demonstrates the feasibility of hosting complex objects, such as MIDI compositions, in smart contracts

How to run the project?

Install modules defined in package.json

npm install

Create a temporary environment

nix-shell

Generate a contract

To represent a JSON object as a Starknet smart contract:

  • Create a new folder and place the JSON file in it.
  • Run the following command:
npx hardhat generateContract <path-to-json-file> <name-of-generated-file>

This will generate a new cairo file with the specified name in contracts folder.

Example:

npx hardhat generateContract example/input/midi.json midi-generated

(I used the Tone.js library to convert the object retrieved from the smart contract into a midi file.)

Retrieve onchain object

Once your contract is deployed, you can call the smart contract's retrieve_object function to get a representation of your original JSON object. To convert this object back to a JSON style, you can use the onchainObjectToJSON function.

Feedback

If you have any comments, suggestions, or encounter any problems, please let me know. You can submit your feedback by creating an issue on this repository, or you can contact me on Twitter at @raphael_dkhn. Thank you for your support!

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