# Pawel Zaremba: The Oracle Directive - Connecting Worlds  | ETHSofia

- Channel: [ETHSofia](https://streameth.org/ethsofia)
- Date: 2025-10-07
- Duration: 22:24
- Watch: https://streameth.org/watch/yt-B_SyY4SG8IY
- YouTube: https://www.youtube.com/watch?v=B_SyY4SG8IY

## Description

Understand why "there's no DeFi is without oracles" and how Oracle tech connects blockchain networks and external data.

Join Pawel Zaremba from Chronicle Labs as he explores the pivotal role of oracles in enabling secure and reliable connections between on-chain and off-chain worlds. 

Chapters:

00:00 Oracle Directive Introduction
02:26 How Oracles Work
03:07 Data Collection and Verification in Oracles
06:41 Gas Optimization with Signature Aggregation
07:21 Schnorr Signature Scheme Explained
08:07 Optimistic Updates for Efficiency
10:21 Security Measures Against Bad Actors
11:06 Scalability of Oracle Validators
11:49 Choosing the Right Oracle System
13:21 Real-World Oracle Failures
15:18 Integrity and Consensus in Oracles
15:58 Chronicle's Historical Security
16:40 Data Availability in Oracles
17:21 Cost and User Impact of Oracle Systems
18:50 Transparency and Reputation in Oracles
19:29 Risk Management with Oracle Systems
20:13 Need for Independent Verification Tools
20:51 Envisioning Automated Oracle Analysis
21:29 Trust and Verification Mantra

This video was recorded during the ETHSofia Conference and Hackathon - October 17-19, 2024.

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#DeFi #OnChainData #SchnorrSignatures #ETHSofia #BlockchainOracles