Hybrid Oracle Model

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Pronunciation

[hy-brid awr-uh-kl mod-uhl]

Analogy

Like using both crowd‑sourced traffic reports and official police data to get accurate, real‑time traffic updates.

Definition

An design combining decentralized on‑chain data aggregation with centralized high‑frequency feeds to balance security, , and cost.

Key Points Intro

Hybrid oracles merge trustless aggregation with trusted feeds for responsive, cost‑effective data.

Key Points

Decentralized feeders: Multiple nodes vote on values.

Trusted source: Central feed for low‑latency updates.

Fallback logic: Switch between modes on anomalies.

Cost optimization: Batch decentralized votes periodically.

Example

A price uses Chainlink median feeds every minute and a centralized exchange websocket for sub‑second updates, blending them in a .

Technical Deep Dive

contract implements `report()` from decentralized nodes and `fastUpdate()` from central feed. A weighted function selects data: if deviation threshold, use fast feed; else wait for aggregated median.

Security Warning

Central feed compromise can misprice feeds; enforce and monitoring.

Caveat

Tuning thresholds is critical to avoid oscillations or stale data.

Related Terms

Fallback Oracle

Slashing

Blockchain & Cryptocurrency Glossary

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