Any developers wanting to consume Twelve Data’s data on-chain within their DeFi application, refer to the following documentation here.
We elected to supply and sell our financial data on-chain using Chainlink because it is the most widely used and time-tested decentralized oracle network in both the blockchain and data provider industry. The Chainlink node enables us to sell our data directly into emerging blockchain-based DeFi markets in a quick and seamless manner. Our Chainlink node is also blockchain-agnostic and cryptographically signs data, giving us a futureproof gateway to any blockchain and a way to prove the integrity of our data to smart contract applications consuming it. For a more detailed explanation of why we selected Chainlink, view our previous announcement.

We’re delighted to launch a Chainlink node and enter the DeFi economy gaining traction as an transparent, tamper-proof, permissionless, and globally accessible financial system. We’re confident that our extensive industry experience in managing robust data infrastructure and refining accurate data will provide smart contract developers with the data quality they need to build reliable products across traditional and cryptocurrency asset classes.
“Integrating with Chainlink was a seamless process that quickly introduced our existing API infrastructure to a broad and growing set of new blockchain markets,” stated Sergey, CEO of Twelve Data. “Not only does our own Chainlink nodes allows us to sell our institutional-grade data directly to smart contracts, but it will cryptographically sign it so users can feel confident in using it on-chain to secure high-value contracts knowing it came direct from our APIs.”
Chainlink is trusted by hundreds of organizations, from global enterprises to projects at the forefront of the blockchain economy, to deliver definitive truth via secure, reliable oracle networks. To learn more about Chainlink, visit chain.link and subscribe to the Chainlink newsletter. To understand the full vision of the Chainlink Network, read the Chainlink 2.0 whitepaper. Want to discuss an integration? Talk to an expert.