We can view finality in ZK-Rollups as a spectrum.

The Delphi Podcast Host and GP of Delphi Ventures Tom Shaughnessy is joined by Eli Ben-Sasson, and Uri Kolodny, Co-Founders of StarkWare, a suite of validity-based blockchain scaling and privacy solut...

...and there are two main categories: Optimistic Rollups (ORU) and ZK Rollups (ZKR)....In fact, the term “ZK Rollup” is not really appropriate; instead, they should be called “Validity Rollups...Validity proofs are posted to Ethereum which includes both the rollup and validium sides, while rollup...

ZK-Rollups For the sake of clarity, it’s important to distinguish between ZK-bridges and ZK-rollups....In ZK-rollups, ZKPs are used to validate every state transition, ensuring the rollup never makes an invalid...Rollup circuits are designed to prove every state transition, whereas ZK-bridge circuits’ main task is...

ZK (Validity) Rollups: Entering the General Purpose Era [Excerpt from a Delphi Insights report] Rollups...(ORU) and ZK Rollups (ZKR)....Fraud proofs, as used in Optimistic rollups, are only needed when disputing the transactions posted to...The main issue with rollups is that they only offer a linear increase in scalability.

zk-rollups (ZKRs):  Sequencer receives and orders transactions....So execution shards with zk-proven state roots can be ERs....Aggregated ZK Bridging  I saved the best for last....By far the most compelling bridging vision is the aggregated ZK-bridging I described above....rollup.

In this report, we look at how the Layer 2 ecosystem is shaping up and dive into the varying rollup solutions...order to unlock the next phase of growth, the scaling torch has been passed over to Layer 2s, led by rollup...

For rollups (zk/ORU) it would be very easy to switch....Because execution still happens on the rollup, fault proofs and zk proofs are still necessary since they...Based on the premise that for non-EVM-compatible zk rollups would not be possible to become based rollups...

ZK (Validity) Rollups: Entering the General Purpose Era [Excerpt from a Delphi Pro Report] ZKRs have...While dYdX is a rollup (data on-chain) the other three under the StarkEx brand (Sorare, DeverseFI and...Aztec is another early implementation and is unique vs the others as it’s a zk-ZKR, meaning a fully private...

This is the thesis behind zk rollups on Ethereum, with the top 3 projects (Starkware, ZKsync, and Polygon...) boasting a combined market cap of around $2.2 Billion ZK rollups on Bitcoin: The rise of L2s on Bitcoin...While this is similar to the ZK rollup model, the major differences are that the coprocessor programs...

rollups....Finally, we take a look at some of the zk rollups building on top of BTC using these components....In zk Rollups, if the block builder / sequencer withholds the data, that part of the data – including...Yona (zk rollup) uses similar strategy where the operators are also Eigenlayer operators.

Especially for optimistic rollups....When funds are withdrawn from an optimistic rollup back to Ethereum using a roll-up bridge, funds are...Optimistic rollups exist so that the L1, Ethereum, does not have to do the compute-heavy job of executing...Extent of Maliciousness As of now, Optimistic rollups collectively hold over $30 bn in TVL.

In simpler terms, ZK-TLS enables cryptographic proofs about data to be exchanged over a Transport Layer...KYC’s shortcomings pave the way for ZK-TLS to take center stage....Dissecting ZK-TLS Before delving into the use-cases and technical architecture of ZK-TLS as a combo,...

⚡ The Complete Guide to Rollups Current rollups settle to Ethereum where they have a smart contract...As rollups decentralize and smart contracts become battle-tested, these rollups could scale Ethereum...You can also build rollups on top of these rollups, so-called “L3s.”...It could serve as a settlement layer for other rollups.

...the co-founder and CEO of Chainway Labs, the company behind Citrea – Bitcoin’s first zero-knowledge (ZK...) rollup....The core innovation behind Citrea is the use of ZK proofs and the groundbreaking BitVM (Bitcoin Virtual...Machine) primitive to create a trust-minimized bridge between Bitcoin’s base layer and the Citrea rollup...

...each one: Succinct https://twitter.com/SuccinctLabs/status/1770843544388771914 There are a bunch of zk...Proposers can buy multiple rollup block sequencing rights simultaneously to offer cross-domain user’s...the auction, once they are identified as the proposer for a particular slot (32 slots in advance) A rollup...

A potentially very powerful primitive that can close this gap is ZK-Email....job but with ZKPs the process becomes practical in terms of verification costs and privacy (e.g. to ZK...Extensibility / Modularity: The ZK circuit follows a specific parsing method to extract info out from...

This is a Snippet from “Solana the Modular” MagicBlock, instead of building a general purpose rollup,...is extending execution using ephemeral rollups....Using PDAs, the execution for accounts can be delegated to an Ephemeral rollup which could have its own...Validators are hyper-specialised and run the Ephemeral rollups. They are co-located near users.

Zk rollups, which use provers for zk proofs, are a solution but can be resource-heavy....zk Rollup Model Let’s walk through a simple overflow of how transaction execution works on a zk rollup...In the past couple of years zk applications (mostly zk rollups) spent almost $30M in gas to verify and...

This offers orders of magnitude cheaper alternative way for rollups to secure their data....Namely, an Ethereum-settled rollup, instead of paying expensive Etheruem gas for DA, can now use Celestia...Instead of rollups relying purely on Ethereum, they will now be relying on attestations of Celestia validators...