# Oracles Reimagined: How L2 State Diffs Change Game

- Channel: [EthPrague](https://streameth.org/ethprague)
- Date: 2024-06-01
- Duration: 22:56
- Watch: https://streameth.org/watch/665833d3036a981493b0bfa5
- Download: https://vod-cdn.lp-playback.studio/raw/jxf4iblf6wlsyor6526t4tcmtmqa/catalyst-vod-com/hls/8e46ku6v4ztwoqeh/1080p0.mp4

## Description

I'll present a design, limitations and innovation of the State Diffs Oracle, which allows for updating data feed each 1-sec on-chain and paying only for one update in each L2 block. It's a frontier of innovation in the on-chain oracle design.