attest.so

A Unified Trust Framework for Blockchain-Based Attestation Infrastructure

🌐 Overview

attest.so provides enterprise-grade infrastructure for builders to create "Reputation Authorities" on-chain with verifiable and comprehensive identity proofs. The project supports multiple blockchain platforms, enabling a unified approach to attestations and identity verification.

Our framework addresses critical challenges in Web3:

• Identity Verification: Robust mechanisms for verifying identities across blockchain ecosystems
• Interoperable Trust: Consistent attestation standards across multiple blockchains
• Reputation Management: Infrastructure for building and maintaining on-chain reputation
• Scalable Solutions: Enterprise-ready attestation infrastructure for builders

🏗️ Architecture

Core Concepts

• Attestations: Verifiable claims made by authorities about subjects
• Schemas: Structured templates defining attestation data formats
• Authorities: Entities with permission to issue and manage attestations
• Subjects: Entities about which attestations are made
• Resolvers: Contract interfaces that locate and verify attestation data

Multi-Chain Support

attest.so is designed with cross-chain compatibility as a primary goal:

Blockchain	Contract Language	Status	Key Features
Stellar	Soroban (Rust)	Active	Fee management, levy collection, verifiable authorities
Solana	Anchor (Rust)	Development	High throughput, scalable attestation storage
Starknet	Cairo	Planned	ZK-friendly proofs, privacy-preserving attestations
Aptos	Move	Research	Resource-oriented attestation model

🧩 Key Components

1. Smart Contracts

The repository contains modular smart contract implementations for multiple blockchain platforms:

Stellar/Soroban Implementation

contracts/stellar/
├── authority/        # Authority resolver contract
│   ├── src/          # Contract implementation
│   └── Cargo.toml    # Dependencies and configuration
└── protocol/         # Core attestation protocol
    ├── src/          # Contract implementation
    └── Cargo.toml    # Dependencies and configuration

Key Features:

• Authority registration and verification
• Schema definition and validation
• Attestation issuance and verification
• Optional fee collection through levy system
• Comprehensive event logging

Additional Blockchain Implementations

Implementation details for Solana (Anchor), Starknet (Cairo), and Aptos (Move) with blockchain-specific optimizations.

2. SDK (Software Development Kit)

A TypeScript SDK that provides a unified interface for interacting with attestation infrastructure:

// Example SDK usage
import { AttestClient } from '@attest.so/sdk';

// Initialize client
const client = new AttestClient({ 
  chain: 'stellar', 
  network: 'testnet' 
});

// Create attestation
const attestation = await client.createAttestation({
  schema: 'did:attest:identity',
  subject: 'G...', // Subject address
  claims: { verified: true, level: 2 }
});

Core Functionality:

• Blockchain connection management
• Schema creation and registration
• Attestation lifecycle management
• Cross-chain verification utilities
• Typescript-first development experience

3. CLI (Command Line Interface)

A powerful command-line tool for interacting with the protocol:

# Install CLI
npm install -g @attest.so/cli

# Create a new attestation
attest create \
  --schema did:attest:identity \
  --subject G... \
  --chain stellar \
  --network testnet \
  --claims '{"verified": true}'

4. Documentation and Examples

Comprehensive documentation and example implementations to facilitate integration:

• Interactive API reference
• Integration guides
• Example applications
• Best practices

📦 Project Structure

The repository follows a monorepo structure using pnpm workspaces:

attest.so/
├── apps/               # Front-end applications
│   ├── docs/           # Documentation website (Next.js)
│   └── explorer/       # Attestation explorer
├── contracts/          # Smart contract implementations
│   ├── stellar/        # Soroban contracts
│   ├── solana/         # Anchor contracts
│   └── starknet/       # Cairo contracts
├── packages/           # SDK, CLI, and utilities
│   ├── sdk/            # TypeScript SDK
│   ├── cli/            # Command-line interface
│   └── common/         # Shared utilities and types
└── examples/           # Example applications
    ├── identity-verification/
    └── reputation-system/

See NAMING.md for detailed information about naming conventions and directory structure standards.

🛠️ Technical Stack

• Frontend: Next.js, React, Tailwind CSS
• SDK/CLI: TypeScript, Node.js
• Smart Contracts:
  • Rust/Soroban (Stellar)
  • Rust/Anchor (Solana)
  • Cairo (Starknet)
  • Move (Aptos)
• Developer Experience:
  • pnpm workspaces
  • TypeScript
  • ESLint/Prettier
  • Jest for testing

🚀 Getting Started

Installation

# Clone the repository
git clone https://github.com/daccred/attest.so.git
cd attest.so

# Install dependencies
pnpm install

# Build all packages
pnpm build

Running the Development Environment

# Start the documentation site
pnpm run dev:docs

# Run the SDK tests
pnpm run test:sdk

# Deploy contracts to local development network
pnpm run deploy:local

Working with Contracts

# Build Soroban contracts
cd contracts/stellar
cargo build --release

# Deploy to Stellar testnet
stellar contract deploy --wasm target/wasm32-unknown-unknown/release/soroban_authority_contract.wasm --network testnet --source <source>

🤝 Contributing

Contributions are welcome! Please see our CONTRIBUTING.md for guidelines.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'feat: add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📚 Resources & Links

• Product Development Log
• Solana Radar Public Goods Award
• Technical Documentation (Coming Soon)
• API Reference (Coming Soon)

📝 License

This project is licensed under the MIT License.