Especially for optimistic rollups....rollup....When funds are withdrawn from an optimistic rollup back to Ethereum using a roll-up bridge, funds are...Extent of Maliciousness As of now, Optimistic rollups collectively hold over $30 bn in TVL....rollup frameworks.

ZK (Validity) Rollups: Entering the General Purpose Era [Excerpt from a Delphi Insights report] Rollups...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.

Based rollups Quoting Justin Drake: “A rollup is said to be based, or L1-sequenced, when its sequencing...With based rollups, every rollup and their competitors can opt-in to use the already bootstrapped and...If current rollups were to switch to become a based rollup, they’d be giving up this value to the L1...

In the case of Optimistic Rollups, fraud proofs require access to the transaction data along with the...Rollups The full utility of these infrastructure components by the rollups is still in its infancy....the entire rollup execution....This is similar to BOB, which is currently an Optimistic rollup on ETH, which will use BitVM, Optimine...

Synthetix and Optimism While the rollups we know and love today were still being built, Synthetix committed...to building on Optimism – one of the earliest projects to commit to a specific rollup.

This simplified graphic depicts the parts which apply to both Ethereum optimistic rollups (ORUs) and...Settlement from Rollups – Rollups post proofs to the L1....It’s quite optimistic that every rollup will run near the lower bound of DA efficiency....rollup.

Rollup implementations, are designed to be general-purpose....Importantly, these Rollups inherent the underlying security assurances of Ethereum....This is because, as part of the Rollup security model, the Rollup Sequencer (the party that replaces...Furthermore, similar to L1, fees are also driven by congestion on the Rollup. ...

...and there are two main categories: Optimistic Rollups (ORU) and ZK Rollups (ZKR)....Fraud proofs, as used in Optimistic rollups, are only needed when disputing the transactions posted to...In fact, the term “ZK Rollup” is not really appropriate; instead, they should be called “Validity Rollups...

⚡ 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.

Pioneered by the team that launched the first Optimistic rollup, Fuel is not another rollup stack but...rollups (ORUs) and zero-knowledge (ZK) rollups....Before we understand how Fuel’s Hybrid proving works, we should understand how Optimistic rollups structure...

Plus, bridged assets are especially tricky on Optimistic rollups as rollbacks might lead to a significant...Briefly, an Optimistic Rollup’s transaction life cycle works like this....The optimistic rollup version of this design looks similar to the Shared Validity Sequencing design we...

Chart of The Day: Arbitrum vs Optimism Arbitrum and Optimism are the two leading Optimistic rollups...For more on L2s, Delphi members can read our Delphi Pro report on ZK Rollups here!...Chart of The Day: Arbitrum vs Optimism Arbitrum and Optimism are the two leading Optimistic rollups for...

...across rollups....Initia (Rollups) OP Stack (Superchain) Arbitrum (Stylus) Infra to deploy rollups ✔️ ✔️ ✔️ Supported...Interwoven Rollups (L2s): application-specific rollups in EVM, MoveVM, or WasmVM that settle to Initia...stack, an optimistic rollup framework built from scratch....between rollups.

Optimistic rollups inherit their name from their “optimistic” approach to handling the off-chain transactions...By default, Optimistic rollups assume that all transactions are valid....Instead, to safeguard against fraudulent or incorrect transactions being validated, Optimistic rollups...

...zk Rollup Model Let’s walk through a simple overflow of how transaction execution works on a zk rollup...Example: Rollup A sends a message to rollup B....So rollup B will accept this message from A before the state of rollup A is finalized on Ethereum to...

These two leading optimistic rollups have been able to effectively incentivize usage via airdrops....These are classified as optimistic rollups (ORUs) because the transactions are assumed to be valid....We cover rollups in more detail in our guide to rollups, published exclusively for Delphi Pro members...

L1s and Rollups have struggled to meet these performance demands, with relatively longer block times...Ethereum Rollups are dealing with a serious handicap: DA saturation and the increasing costs that come...This will leave Ethereum rollups in 2027 handling less capacity than (FD-enabled) Solana this year.

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...

...bottleneck that defined early blockchain design has largely been addressed via high-throughput L1s, rollups...Whether it’s proof objects, fraud logs, rollup transaction data, or large offchain datasets, EigenDA...double-signing, are trivial to detect, but others such as verifying a complex AI inference or a custom rollup...

’s ephemeral rollups which are very different than gp rollups....Optimistic rollups such as Optimism, Arbitrum, Taiko, Fuel, and many others have been working on hybrid...Combined with rapidly falling costs, these zkVMs are positioned to challenge optimistic rollups’ dominance...