Product Overview

The Blocky Attestation Service (AS) is a powerful CLI and REST API providing verifiable serverless computation within Trusted Execution Environments (TEEs). It allows enterprises and developers to generate cryptographically-signed attestations for off-chain or external data, ideal for use cases requiring trustworthy data feeds, smart contract inputs, or transparent audit logs.

Why It Matters

• Hardware-backed integrity: Runs inside AWS Nitro Enclaves, delivering attestations tied to code and environment, with key measurements verified via reproducible builds.
• Layered attestation model:
  • Enclave Attestations: Slow but comprehensive, attesting both TEE environment and service code-public key.
  • Transitive Attestations: Fast, compact, and application-level, signed by enclave key and verifying logical outputs. Concepts
• Smart contract ready: Outputs in JWT or ABI-encoded formats for on-chain validation. Docs

Key Features

• Dual interfaces: Use the bky-as CLI or REST API. CLI is installable via script or manual download.
• Secure configuration: config.toml supports local or TEE-backed servers, with auth tokens and enclave measurement alignment.
• Broad integrations: Integrates with various external APIs—off-chain, Oracle, and smart contract ecosystems.

Developer Example: Coin Prices from CoinGecko

A practical example fetches crypto prices securely:

1. Function within Blocky AS calls CoinGecko API (via HTTP).
2. Parses JSON price responses.
3. Returns attested output containing price data, timestamp, and enclave signature.
4. Optionally formats as JWT or ABI for seamless integration.

Highlights: