---
title: Attestations
description:
  A public good program for associating offchain data with onchain accounts
---

**Solana Attestations is a public good program for associating offchain data
with onchain accounts.** The system provides a framework for creating verifiable
claims about accounts, enabling developers to build reputation systems,
compliance tools, and other trust-based applications.

## Why Attestations?

- **Verifiable Claims**: Create cryptographically verifiable statements about
  accounts
- **Flexible Schemas**: Define custom data structures for different types of
  attestations
- **Authority Management**: Control who can issue attestations through
  credential systems
- **Token Integration**: Link attestations to specific token accounts for
  targeted claims
- **On-Chain Storage**: Keep attestation data on Solana for transparency and
  permanence

## Quick Start

Install the Solana Attestations library:

```bash
# Using pnpm (recommended)
pnpm add sas-lib

# Using npm
npm install sas-lib

# Using yarn
yarn add sas-lib
```

For Rust projects:

```bash
cargo add solana-attestation-service-client
```

**[→ Installation Quick Start](/docs/tools/attestations/quickstart/installation)** -
Get up and running quickly

**[→ Overview](/docs/tools/attestations/overview)** - Detailed overview and
architecture

## Core Concepts

The Attestations system is built around three main components:

### Credentials

A credential represents an attestation authority that can issue attestations.
Each credential has authorized signers who can create attestations under its
authority.

### Schemas

A schema defines the structure and validation rules for attestations. Schemas
serve as templates specifying what fields an attestation should contain and how
they should be formatted.

### Attestations

An attestation represents a verified claim or statement. Attestations are
created by authorized signers under a credential and follow a specific schema
structure.

## Use Cases

Attestations enable a wide range of applications:

- **Identity Verification**: Verify user identities and KYC compliance
- **Reputation Systems**: Build trust scores and reputation metrics
- **Compliance Tools**: Ensure regulatory compliance for DeFi protocols
- **Certification Programs**: Issue and verify professional certifications
- **Supply Chain Tracking**: Track provenance and authenticity of goods
- **Social Proof**: Verify social media accounts and community membership

## Architecture

The system follows a hierarchical structure:

1. **Authorities** create credentials that define who can issue attestations
2. **Schemas** are created under credentials to define attestation data
   structure
3. **Attestations** are issued by authorized signers following the schema format
4. **Token Accounts** can be linked to attestations for targeted claims

## Getting Started

Explore the documentation based on your use case:

- **[Quick Start Guides](/docs/tools/attestations/quickstart/installation)** -
  Get up and running quickly
- **[Credentials](/docs/tools/attestations/credentials)** - Learn about
  attestation authorities
- **[Schemas](/docs/tools/attestations/schemas)** - Define data structures for
  attestations
- **[Attestations](/docs/tools/attestations/attestations)** - Create and manage
  verifiable claims
- **[Instructions](/docs/tools/attestations/instructions/create-credential)** -
  Complete API reference for all operations

## Community & Support

- **Questions?** Ask on
  [Solana Stack Exchange](https://solana.stackexchange.com/) (use the
  `attestations` tag)
- **Issues?** Report on
  [GitHub Issues](https://github.com/solana-foundation/solana-attestation-service/issues)

## Source

GitHub
Repository](https://github.com/solana-foundation/solana-attestation-service)

Built and maintained by the [Solana Foundation](https://solana.org).

Licensed under Apache License, Version 2.0.