AttestMe

AttestMe is an attestation service built on StarkNet, offering a variety of attestation functionalities including CreateSchema, MakeAttestation, RevokeAttestation, and advanced resolvers for enhanced flexibility.

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Features

• CreateSchema and ViewSchemas: Define schemas for structured attestations.
• MakeAttestation and ViewAttestations: Create attestations based on predefined schemas.
• RevokeAttestation: Revoke existing attestations when no longer valid.
• Resolvers: Custom resolvers such as DataResolver, ExpirationResolver, PayingResolver, and TokenResolver.

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Prerequisites

• Node.js (v18.17.x or later)
• npm or yarn installed globally
• Starknet Wallet (e.g. Braavos, Argent X) for interacting with the application

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Installation Steps

Follow these steps to set up the project locally:

1. Clone the Repository

   git clone https://github.com/rajeebkm/attest-me
   cd attest-me

2. Navigate to the Front-End Folder

   Move into the front-end directory where the client application resides.

   cd front-end

3. Install Dependencies

   Install all required dependencies using the following command. The --f flag ensures compatibility by forcing a clean install.

   npm i --f

4. Run the Development Server

   Start the development server. This will host the front-end on a local server, typically accessible at http://localhost:3000.

   npm run dev

5. Access the Application

   Open a browser and navigate to http://localhost:3000. Connect your StarkNet wallet to begin using the attestation features.

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Technical Architecture

Core Contracts

• schema_registry.cairo: Manages the creation, registration, and management of schemas, enabling structured and reusable attestations.
• sas.cairo: Provides logic for attesting, verifying, and revoking attestations based on schemas.

Resolvers

Resolvers are modular components that add specific conditions or features to attestations. Each resolver is implemented as a separate contract to provide extensibility and reuse:

1. recipient_resolver.cairo: Ensures that an attestation is made to a specific recipient, like addressing a letter to the intended individual.
2. attester_resolver.cairo: Verifies that the attestation is created by a specific attester, granting exclusive rights to a trusted entity.
3. revocation_resolver.cairo: Manages and controls the revocation process for attestations efficiently.
4. schema_resolver.cairo: Validates attestations against predefined schemas to ensure structural consistency.
5. token_resolver.cairo: Checks the approval of a specific amount of tokens for attestation, integrating token transactions into the process.
6. value_resolver.cairo: Ensures that a specific amount of ETH accompanies an attestation, acting as a required fee or deposit.
7. expiration_resolver.cairo: Validates that the attestation has not exceeded its expiration time, enforcing time-based validity.

Front-End

• Framework: Built with Next.js.
• Libraries:
  • Starknet.js: For wallet integration and blockchain interactions.
  • React: For building reusable UI components.

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Smart Contract Testing

To test the contracts, navigate to the project's home directory and run:

snforge test


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Feel free to reach out at https://x.com/stark_attestme with any questions or issues!