Pyth Workshop
summary
Explains Pyth’s pull oracle model where onchain contracts include a Hermes-provided bytes array to verify price updates (no push), supports ~1,500 feeds across ~160 chains with 400 ms update slots, and lets one transaction update many prices (examples show 10–100 in a single call) for a low “one-way” fee; covers verification via onchain digest checks, Hermes API and websocket demos, the Entropy VRF commit/reveal hash-chain flow, and a price-pusher bot for traditional push mode.
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chapters (22)
- 0:00Introduction to Pyth Network & Oracles
- 0:52Pyth’s Price Feeds: Crypto, Forex, Stocks, Metals
- 1:46Push vs. Pull Oracles Explained
- 2:20On-Chain Price Updates & Gas Costs
- 3:41Pythnet: Decentralized Data Aggregation
- 4:24How to Pull Real-Time Prices (Demo Prep)
- 5:40On-Chain Price Verification & Security
- 6:21Hermes API: Fetching Price Updates
- 7:14Live Q&A: Block Latency & Data Freshness
- 9:03Step-by-Step Price Update Demo
- 10:21Bounty Requirements & Best Practices
- 11:37Handling Price Timestamps & Conflicts
- 14:06Hermes API Walkthrough (Code Demo)
- 15:25Formatting Data for On-Chain Use
- 16:46Price Feed IDs & Cross-Chain Compatibility
- 17:23Historical Data & Off-Chain Lookups
- 18:09Data Authenticity & Publisher Networks
- 19:25Entropy VRF: Decentralized Randomness
- 20:43Hash Chains & Callback Workflow
- 21:54Implementing VRF in Smart Contracts
- 23:12Price Pusher Bot for Push Oracle Mode
- 24:38Final Q&A & Hackathon Tips
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