The “Why”s of Optimistic Rollup

What Is Optimistic Rollup?

Not this one. (Source)

I’ll Do You One Better: Why Is Optimistic Rollup?

Merged Consensus

  • A fork choice rule (how to choose between two otherwise valid chains)
  • A block validity function (state transition function)
  • A leader selection algorithm (who is permitted to attempt to progress the chain by extending its tip with a new block)
  • A Sybil resistance mechanism (Proof-of-Work, Proof-of-Stake, etc.)

Sustainable Scaling

Non-Interactiveness FTW

Demystifying Transaction Latency Claims

Optimistic rollup gives you instant, gas-free transactions!

On Data Availability Challenges

  1. Post all data on-chain all the time
  2. Use data availability challenges to only post the data when needed
  3. Use data availability proofs

Further Improvements

Teams Building Optimistic Rollup





Blockchain skeptic.

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

Enters Dusk — in full daylight and the difference between an App and a Dapp

JoyStream. The future of online video services.

KICK is about to PUNCH the chains

Things to watch out, before you sign a contract!

Anatomy of Asset and Value Transfers with the Extensible Blockchain Object Model and Extensible…

RUSHMOON-automatic liqudity yield farm&Amm

QuikYield :Pure Unique And Why I’m Bullish On It

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
John Adler

John Adler

Blockchain skeptic.

More from Medium

[PoS Round-Up] Ethereum delays difficulty bomb, Solana Pay transaction requests & Polkadot launched…

Celestia — First Modular Blockchain Network (by Journal Du Coin)

Dialed in with Switchboard: 4–18–22

Polymer and Celestia Partner to Bring IBC to Optimistic Rollups