DataLink Architecture (Push Delivery)

DataLink (Push Delivery) provides infrastructure for Data Providers to make their specialized data available onchain through direct delivery to smart contracts, leveraging the proven Chainlink Data Feeds architecture.

1. Data Provider Connection

   • Chainlink Labs curates and onboards premium Data Providers who make their specialized data available via secure API endpoints
   • The provider makes their proprietary data available via a secure API endpoint.

2. Data Fetching & Consensus (Data DON)

   • Multiple nodes within a Chainlink Decentralized Oracle Network (DON) independently fetch data from the provider's API.
   • Nodes reach consensus on the data received from the provider.

3. Onchain Delivery

   • Automatic Updates: Aggregated data is automatically pushed onchain to aggregator contracts based on:
     • Deviation Threshold: Updates trigger when offchain values deviate beyond a defined threshold from the onchain value
     • Heartbeat Threshold: Updates occur after a specified time interval, regardless of price movement
   • Smart Contract Storage: Data is stored onchain in aggregator contracts, making it immediately available for smart contract consumption

4. Consumer Access

   • Proxy Architecture: Consumer contracts access data through proxy contracts that point to the current aggregator
   • Standard Interface: Integration uses the familiar AggregatorV3Interface for seamless compatibility