# EVM Packages: using OpenZeppelin from ZeppelinOS by Santiago Palladino (Devcon4)

- Channel: [Devcon](https://streameth.org/devcon)
- Date: 2019-10-09
- Duration: 08:03
- Topics: blockchain, smart contracts, distributed ledger, Science & Technology
- Watch: https://streameth.org/watch/yt-l2D-E1PF9R0
- YouTube: https://www.youtube.com/watch?v=l2D-E1PF9R0

## Description

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https://archive.devcon.org/archive/watch/4/evm-packages-using-openzeppelin-from-zeppelinos

Proxy contracts are gaining traction as a mean to support upgradeability, reduce deployment gas costs, and share on-chain libraries. In this talk, we'll quickly review: -The minimal proxy contract, being formalised as EIP 1167 -The transparent upgradeability proxy, in use in ZeppelinOS -And the vtable proxy contract, which enables new development patterns

Speaker(s): Santiago Palladino
Skill level: Intermediate
Track: Developer Infrastructure
Keywords: proxy, EIP

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Devcon is the Ethereum conference for developers, researchers, thinkers, and makers. 
Devcon 4 was held in Prague, Czech Republic on Oct 30 - Nov 2, 2018.
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