Starknet.id Contract

This contract is written in Cairo. It allows to mint identity nfts. The nft contains fields associated to values. To each field, value can be bound, certified by a user or other contracts. For the same field there can be multiple values from multiple contracts.

Official addresses of deployment:

• Goerli: 0x783a9097b26eae0586373b2ce0ed3529ddc44069d1e0fbc4f66d42b69d6850d
• Mainnet: 0x05dbdedc203e92749e2e746e2d40a768d966bd243df04a6b712e222bc040a9af

Usage

Note: When rewriting extended data, you might want to add a zero at the end to tell to unbounded read where to stop.

For users

// mint a nft with id token_id (can be random, must not be already minted)
mint(token_id);

// write a data (my discord id) associated to a token_id of a NFT I own and a type (here the felt 'discord')
set_user_data(token_id, 'discord', 707979046952239197);

// write multiple felts
set_extended_user_data(token_id, 'avatar', 3, new('my', 'avatar', 'url'));

For verifiers

// confirm this data is correct for this specific type and token_id (e.g. you got a proof)
set_verifier_data(token_id, 'discord', 707979046952239197);

// same with multiple felts
set_extended_verifier_data(token_id, 'avatar', 3, new('my', 'avatar', 'url'));

For external services

// get data written by the nft owner
get_user_data(token_id, 'discord');

// retrieving an array knowing its size (will return zeros if not written)
get_extended_user_data(token_id, 'avatar', 3);

// retrieving an array up to zero (not included)
get_unbounded_user_data(token_id, 'avatar');

// get data written by the specified verifier
get_verifier_data(token_id, 'discord', verifier_addr);
get_extended_verifier_data(token_id, 'avatar', 3, verifier_addr);
get_unbounded_verifier_data(token_id, 'avatar', verifier_addr);

Building/testing

Setup: protostar install Testing: protostar test Building: protostar build Deploying: python deploy.py <private_key>