The Relationship Between Proposer and Sequencer in Arbitrum

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On some chains, proposer and sequencer are the same component. It's probably fair to say in arbitrum that those roles are both played by the arbitrum sequencer. And how did arbitrum earn its green slices in these two slices? One of the most important was designing the protocol so that the sequencer is trusted for only one thing: to say which transactions it has received and in what order.

What did the Arbitrum L2 just unlock with its BOLD release? What stage of L2 is Arbitrum in? What is next for decentralizing the Arbitrum stack? We brought on Ed Felten and Raul Jordan to help answer these questions and much more.

Ed Felten is a Co-Founder of OffChain Labs, the organization that created Arbiturm. Raul Jordan is one of the Co-Founders of Prysmatic Labs, the Ethereum consensus client which not too long ago got acquired by Offchain Labs.

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----- TIMESTAMPS

0:00 Intro 7:30 What is BOLD? 9:20 Are L2s Decentralized? 19:30 BOLD Timeline 23:40 What Does BOLD Solve? 27:15 How Does BOLD Work? 31:35 Why Use BOLD? 38:00 Shared Sequencing 42:30 Why Was BOLD Hard to Build? 48:50 Will BOLD Be Open-Source? 50:00 Are L2s Secure? 52:30 Staking $ARB 1:00:20 Arbitrum's New Tech 1:03:50 Ethereum's Overarching Roadmap 1:06:30 Closing & Disclaimers

----- RESOURCES

BOLD, Permissionless Validation for Arbitrum Chains https://offchain.medium.com/bold-permissionless-validation-for-arbitrum-chains-9934eb5328cc

Ed Felten https://twitter.com/EdFelten

Raul Jordan https://twitter.com/rauljordaneth

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