Skip to main content

Delta Feeds

You can find currently deployed DeltaFeeds contracts on this page.

Overview​

DeltaFeeds is a next-generation oracle contract designed to deliver highly efficient, secure, and scalable price feeds. It combines multiparty computation, threshold ECDSA signing, and on-chain data compression to minimize gas costs while ensuring robust data integrity.

Key Features​

Multiparty Computation with Threshold Signatures​

DeltaFeeds leverages multiparty computation (MPC) to coordinate participants in generating threshold ECDSA signatures for price updates. Updates are coordinated via a side network (e.g., Gnosis, Fantom Opera, Chunk chain), which acts as an intermediate data layer.

Benefits of the side network:

  • No central point of communication (and hence, no single point of failure).
  • Participants are naturally protected against DDoS attacks.
  • The network layer can be swapped in case of outage.
  • The oracle does not trust the side network — it only transports data. Security relies on MPC.

Efficient Price Packing & Gas Optimization​

Traditional oracles consume one storage slot per metric update. DeltaFeeds introduces advanced data packing techniques, compressing multiple metric updates into a single slot.

  • Deltas instead of raw values: Price changes are stored as compact logarithmic deltas, allowing tiny movements to be represented efficiently.
  • On-chain compression: Several metrics are consolidated into a single storage slot, significantly lowering gas usage.
  • Minimal distinguishable change: With a fixed-point delta base (DELTA_BASE = 1.002), the oracle supports fine-grained updates (~0.2% steps) while minimizing overhead.

This makes DeltaFeeds particularly suitable for high-frequency updates and multi-asset feeds.

Dual-Chain and Single-Chain Scenarios​

Dual-Chain Setup

  • Computation and coordination are executed in a low-cost side network.
  • Final signed updates are relayed and committed to a target network (e.g., Ethereum mainnet) with higher security guarantees.
  • This approach combines affordability with Ethereum-level security.

Single-Chain Setup

  • Both computation and storage happen on the same chain.
  • Simplifies architecture for smaller deployments or chains with lower fees.

DeltaFeeds combines multiparty cryptography with efficient compression to deliver cost-effective, scalable, and secure oracles across multiple blockchain environments.

Last updated by Chunk