Stellar Community Fund

By Stellar Attestation Service

Stellar Attestation Service

SCF #29

$37.5K

Legacy v5.0 Activation Award

Awarded

Soroban framework for attesting to digital interactions on the Stellar network.

Products & Services

Problem: In many industries, the verification of credentials and compliance with regulatory requirements is complex, time-consuming, and prone to fraud. Traditional methods for issuing and verifying digital attestations often rely on centralized systems, which are vulnerable to security breaches, tampering, and inefficiencies. These challenges are especially pronounced in sectors such as financial services, supply chain management, education, healthcare, real estate, and employment verification.

Solution: We are building a decentralized attestation service for the Stellar blockchain, leveraging Soroban smart contracts. This service will allow projects within the Stellar ecosystem to issue, verify, and manage digital credentials for their users. Our platform will enable the creation, storage, and verification of various types of attestations, such as identity verification, educational certifications, professional qualifications, and more. This service will issue tokenized assets representing attestations, store metadata on decentralized storage solutions like IPFS, and provide APIs for seamless integration with various projects. By integrating with our platform, projects within the Stellar ecosystem can enhance their operations, increase trust among users, and ensure compliance with regulatory requirements. This service will not only address critical pain points but will also foster innovation and collaboration within the Stellar community.

Key features of our attestation service include:

Unified Trust Framework (UTF): Our Soroban smart contracts standardize trust assessments across various applications, with default resolver contracts and the ability to use your own resolver contracts for custom attestation logic.

Attestation Schema Registry: Allows registration of custom attestation schemas that define the structure and rules for attestations.

Privacy-preserving verification mechanisms: Verifications are conducted without compromising privacy.

Integration with existing Stellar wallets: Seamlessly works with current Stellar wallet solutions.

Revocation and expiration management: Supports managing the validity and lifecycle of attestations.

Secure on-chain storage of attestations: All Attestations are safely stored on the blockchain.

Interoperability with Stellar-based services & SEPs: Ensures compatibility with other Stellar services.

Developer SDKs and integrations: SDKs and CLI tools for Rust and Node.js allow developers to easily integrate attestation functionalities into their applications.

Target Audience: SAS caters to:

Developers building applications on Stellar

Financial institutions using Stellar for remittances or asset issuance

Decentralized finance (DeFi) projects requiring KYC/AML compliance

Credit Worthiness, Lending and Scoring (DeFi)

Educational institutions issuing digital certificates

Marketplaces that rely on reputation and reviews

Government agencies for identity verification

Stellar Integration:

Soroban Smart Contracts: Implement core attestation logic (issuance, revocation, verification) Store credential schemas and registry of issuers Handle selective disclosure and zero-knowledge proofs

Stellar Operations: Use custom operations for credential-related transactions Leverage multi-signature accounts for enhanced security

SEP Integrations: SEP-0010 for authentication of issuers and verifiers SEP-0012 for KYC information collection SEP-0030 for account recovery using attestations

Ecosystem Partnerships: Collaborate with Stellar anchors for fiat on/off ramps Integrate with existing Stellar wallets for credential storage Partner with KYC/AML providers in the Stellar ecosystem

We chose Stellar for our attestation service due to its:

Fast and low-cost transactions, ideal for frequent credential operations

Built-in compliance features align with regulatory requirements

Strong focus on financial inclusion aligns with many use cases for digital credentials

Soroban's WebAssembly-based smart contracts offer flexibility and performance

Active developer community and support from Stellar Development Foundation