☕Company overview

Espresso is a software company that creates infrastructure tools for safer and more open blockchains. Since this is an infrastructure product you will be re-staking with, it is important to know the two services they provide. A roll-up sequencer called Sequencer and CAPE. We will focus on Sequencer since it has an obvious relationship with Eigen and re-staking. CAPE is a protocol for decentralized private computation and I cannot find any direct ways it may interact with Eigen at this time.

Key Points

• Sequencers are a necessary piece of L1 architecture.

• Sequencers should have high throughput and low latency, but also be decentralized, have low trust assumptions, and be secure. The first two are hard to implement without compromising the others.

• Espresso’s Sequencer product can run as a consensus protocol with high throughput and low latency but then use Eigen re-staking to decentralize and borrow eth’s world-class security. So now roll-up sequencers can get the best of both worlds.

What is Sequencer? ⏰ - A shared sequencer for roll-ups to use. Sequencers function to, you guessed it, sequence transactions. They order the transactions to then be transmitted to and executed by the VM and then make the information available to clients. So for example, all of us degens long eth at 4,900 through Metamask on a roll-up, that transaction is then shipped to the rollup where it goes to the mempool queue. The sequencer will then fetch the transactions and order them for the VM and present it to clients for nodes to transmit to the blockchain. Thus cementing your long at the tippy top of Eth’s price. No worries though fren, you will make it back next bull run.

Eigen’s role 🤝

So why would this product need Eigen? I certainly am no roll-up expert, so I will try and highlight how I believe this company will interact with Eigen and update later if need be. We will call this educated speculation.

So a Sequencer can live at two extremes. Either centralized in a server or decentralized across many nodes. Most sequencers are centralized on a server, for higher throughput, lower latency, etc. they simply outperform the decentralized sequencers at present. A roll-up is only as decentralized as its least decentralized component though! So even if other parts of your roll-up are maximally decentralized, the centralized sequencer can prevent it from being truly decentralized with all the risk that entails. So server is a dirty word here in Ethereum land for a reason. A Server centralized sequencer negates many of the benefits of a decentralized app on eth in the first place. Builders know this but there is not much they can do about it for now as they have to remain competitive with high throughput and low latency. This is where Espresso and Eigen can join forces. Espresso can replace a centralized sequencer with a decentralized consensus protocol and get the best of both worlds, higher throughput, and faster confirmation of transactions than even native Ethereum. This protocol only needs to order and make available the data NOT execute said data. This significantly eases consensus since execution is taken out of the sequencer and the nodes can finish after consensus has been reached. How do we reach a consensus for this consensus protocol though? Without the old server system? With Eigen re-stakers 🥩! By borrowing from Eigen’s decentralized validator sets the Espresso protocol can be decentralized and share in the security of Ethereum’s L1. So now we have the best of both worlds high throughput, low latency, decentralization, and world-class security. This also unlocks the ability for cross-roll-up bridges to become more interoperable. The shared sequencer guarantees that a transaction is finalized on the rollup only if it is finalized on the other roll-up across the “bridge”.

Sequencers are essential middle-ware that Eigen Layer was born to address. Taking a centralized component and through the magic of Eigen’s risk market decentralizing it with little to no loss of benefits. So my frens, I think Espresso has a vital part of Ethereum’s roll-up centric road map and you can be part of it. Who knows, perhaps you will decide to give us here at EigenFrens the honor of being your node operator and we can make Espresso and Ethereum something great together!