# Introduction to Chainlink Confidential AI Attester I Solange Gueiros, Andrej Rakic - Speakers: [Solange Gueiros](https://streameth.org/speakers/solange-gueiros) - Channel: [ETHGlobal](https://streameth.org/ethglobal) - Date: 2026-08-09 - Duration: 17:25 - Topics: Chainlink, Solange Gueiros, Andrej Rakic, ETHGlobal New York 2026, Confidential AI Attester, CRE, Chainlink Runtime Environment, TEE, trusted execution environment, AWS Nitro Enclave, DeFi, undercollateralized loans, KYC, AML, proof of reserves, attestation, LLM, Gemma, privacy, smart contracts, oracle, API key, playground, curl, ngrok, Foundry, USDC, workflows, simulation, testnet, data streams, developer skills, Claude Code, Cursor, Codex, Ari Juels, bounties, hackathon, document analysis - Watch: https://streameth.org/watch/yt-LnTS5whjxkc - YouTube: https://www.youtube.com/watch?v=LnTS5whjxkc ## Description In this workshop at ETHGlobal New York 2026, Solange Gueiros and Andrej Rakic from Chainlink introduce the Chainlink Confidential AI Attester and walk through how to use Chainlink across hackathon projects. Solange runs through the four bounties: three best projects using the Chainlink Runtime Environment (CRE) and its workflows, two best projects using any other Chainlink service, two best projects using the new Chainlink Confidential AI Attester, and two best projects extending an existing Chainlink project on the continuity track, all combinable. She encourages installing the Chainlink developer agent skills, which carry the expertise to build with Chainlink services in any environment like Claude Code, Cursor, or Codex, so hackers can focus on use cases rather than becoming experts over a weekend. Andrej introduces the Confidential AI Attester, an early alpha experiment from Chainlink's research and engineering teams, and notes Professor Ari Juels will be a special guest judge for that track on Sunday. He frames the problem: proving your financials today (for a loan or a car) requires showing the books and involving notaries and lawyers, which is not private, and cannot be done in DeFi. Good candidate use cases include undercollateralized DeFi loans, KYC, AML, and proof of reserves, anything that involves uploading documents for analysis. He demos the playground (which needs an API key from the booth or Discord), uploading a mock AI-generated financial PDF and prompting the attester to judge whether the individual is a suitable candidate for a 500 USDC undercollateralized loan. The analysis runs inside a Trusted Execution Environment (an AWS Nitro Enclave) so the document does not leak, using an open LLM (Gemma, switchable to others). Once he gets the attestation, a CRE callback decrypts and decodes the decision and stores it on a simple smart contract exposing view functions a DeFi protocol can check. He walks through simulating the CRE workflow locally (CRE CLI version 19 or above waits for an HTTP or log trigger), exposing localhost via ngrok, and appending a broadcast flag so a simulation still writes on-chain to testnet, showing the resulting approved decision, document digest, and transaction hash. He clarifies CRE is optional (the attester works standalone, callable via curl or any language), points to the demo repo, and closes with Q&A on verifying callbacks and where to get API keys and data streams testnet credentials. 00:00 Introduction 00:12 Why Chainlink for Your Hackathon Project 00:36 Meet Solange and Andrej 01:00 The Chainlink Bounties 01:31 The New Confidential AI Attester Bounty 02:01 Extending an Existing Chainlink Project 02:12 Installing the Chainlink Developer Skills 02:29 The Chainlink Runtime Environment 02:56 A Special Guest Judge: Ari Juels 03:18 What Is the Confidential AI Attester 03:42 Why Proving Financials Is Not Private 04:02 An Early Alpha Experiment 04:25 Candidate Use Cases 04:48 A Look at the Playground and Resources 05:33 Why to Use the AI Skills 05:52 Getting an API Key 06:16 Uploading a Financial PDF 06:45 Running the Analysis Inside a TEE 07:16 Verifying the Attestation On Chain 07:49 How the CRE Callback Stores the Decision 08:20 The Undercollateralized Loan Prompt 08:40 Checking the CRE CLI Version 09:05 Simulating With an HTTP Trigger 09:29 Exposing Localhost With ngrok 09:54 Submitting the Request 10:18 The Broadcast Flag Writes to Testnet 11:07 Seeing the Approved Decision and Transaction 11:34 Querying the Contract for the Decision 12:02 The LLM and Enclave Behind It 12:36 Q&A: Is CRE Required 13:04 Walking Through the Demo Repo 14:07 Q&A: Verifying the Callback 15:21 Recapping the Four Bounties 16:35 API Keys and Data Streams Credentials 17:15 Closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ *ETHGlobal New York 2026* This workshop is specifically for ETHGlobal New York 2026, a 3-day hackathon held June 12-14 at the Metropolitan Pavilion, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! 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