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Based Rollups

Based rollups. Justin Drake.

A based rollup lets the parent's proposers order the rollup's transactions. There is no separate sequencer to bribe or to wait for.

A reading of the public document. Not a copy of it, and not a claim about a later network that reused the name.

A rollup that sells itself as Ethereum-aligned and then runs a single sequencer has not made this choice.
Evidence
Primary paper
Re-measured
No
Assumptions
3
Records linked
2

Code

Source, repository, and what is actually hosted

  • ethresear.chhttps://ethresear.ch/t/based-rollups-superpowers-from-l1-sequencing/15016
  • The source URL is not a GitHub repository. No code remote is invented.
  • Full text is not mirrored. Public availability is not a licence to copy the file onto this site.
  • Add to a reading list

01 Claim ledger

What the paper is allowed to say

Each row is a sentence already in the study. The status is the same on every row: a model claim, not a live measurement.

  1. Claim 01 · Paper model

    The defect

    A rollup sequencer is a new leader. It can reorder, censor, and go down. The parent chain already has a leader election.

  2. Claim 02 · Paper model

    The rule

    A based rollup lets the parent's proposers order the rollup's transactions. There is no separate sequencer to bribe or to wait for.

  3. Claim 03 · Paper model

    How it is put together

    Ordering is inherited from the parent. A separate sequencer is the thing being removed. Liveness of the rollup then tracks liveness of the parent proposers.

  4. Claim 04 · Paper model

    Where the claim stops

    Based does not mean the parent executes the rollup.

02 Three cuts

Observation, model, falsifier

A desk does not stop at the summary. Each claim is cut three ways, using only this study's own assumptions and checks. Nothing here is a new figure.

  1. 01 The defect

    Observation

    What the study says

    A rollup sequencer is a new leader. It can reorder, censor, and go down. The parent chain already has a leader election.

    Model

    What has to hold

    Based does not mean the parent executes the rollup.

    Falsifier

    What would retire it

    What happens when no parent proposer includes rollup transactions?

  2. 02 The rule

    Observation

    What the study says

    A based rollup lets the parent's proposers order the rollup's transactions. There is no separate sequencer to bribe or to wait for.

    Model

    What has to hold

    Based does not mean the parent executes the rollup.

    Falsifier

    What would retire it

    What happens when no parent proposer includes rollup transactions?

  3. 03 How it is put together

    Observation

    What the study says

    Ordering is inherited from the parent. A separate sequencer is the thing being removed. Liveness of the rollup then tracks liveness of the parent proposers.

    Model

    What has to hold

    Based does not mean the parent executes the rollup.

    Falsifier

    What would retire it

    What happens when no parent proposer includes rollup transactions?

  4. 04 Where the claim stops

    Observation

    What the study says

    Based does not mean the parent executes the rollup.

    Model

    What has to hold

    Based does not mean the parent executes the rollup.

    Falsifier

    What would retire it

    What happens when no parent proposer includes rollup transactions?

03 Sequence

One action, as an operating tape

  1. 01A parent proposer includes rollup transactions in a parent block.
  2. 02The rollup derives its order from that inclusion.
  3. 03Proofs or fraud games still have to establish the resulting state.
  4. 04Who chooses the order?

04 Load-bearing

The argument, and where a pitch drops it

  1. Why it is still on the desk

    The cut

    A rollup that sells itself as Ethereum-aligned and then runs a single sequencer has not made this choice.

    Why it carries weight

    If this cut is skipped, the paper's name is being used without the mechanism that makes the name mean anything.

    Where it is dropped

    Based does not mean the parent executes the rollup.

  2. After the text

    The cut

    Later preconfirmation designs try to recover fast acknowledgement without giving the sequencer back its monopoly. They are separate notes.

    Why it carries weight

    If this cut is skipped, the paper's name is being used without the mechanism that makes the name mean anything.

    Where it is dropped

    A later client, parameter or reward formula is a different object from this paragraph.

05 Register

What has to be true

  • Model · Not re-measured

    Based does not mean the parent executes the rollup.

  • Data · Not re-measured

    It does not remove data-availability choices.

  • Model · Not re-measured

    The note is a design, not a deployed standard.

06 Divergence

What happened after the paper

Later preconfirmation designs try to recover fast acknowledgement without giving the sequencer back its monopoly. They are separate notes.

A later client, parameter set, or reward formula is a different object. Cite this paper for the mechanism. Cite a primary release for the network. This desk has not re-run the proof.

07 Pre-mortem

What to check before you use the idea

  4. 0 of 3 marked on this browser. A mark is a reading note, not a pass, a rating, or a recommendation.

08 Anatomy

The paper, in the order a builder needs

The problem it names

A rollup sequencer is a new leader. It can reorder, censor, and go down. The parent chain already has a leader election.

What the design proposes

  • Ordering is inherited from the parent.
  • A separate sequencer is the thing being removed.
  • Liveness of the rollup then tracks liveness of the parent proposers.

How the mechanism is specified

  • A parent proposer includes rollup transactions in a parent block.
  • The rollup derives its order from that inclusion.
  • Proofs or fraud games still have to establish the resulting state.

What this page does not treat as proven

  • Based does not mean the parent executes the rollup.
  • It does not remove data-availability choices.
  • The note is a design, not a deployed standard.

Why the desk still reads it

A rollup that sells itself as Ethereum-aligned and then runs a single sequencer has not made this choice.

09 Lexicon

Terms, opened into the record

Based
Ordered by the parent chain's proposers.
Sequencer
A separate party that orders rollup transactions.

10 Repository

Every linked record on this page

Underlined words open a page that already exists: a concept, a protocol profile, a failure record, or another paper. If a word is not underlined, this desk does not have a record for it.

Concepts

Protocols

This is Blockchain Lab's reading of a public design paper. It is not the paper, not a copy of it, and not an offer of tokens, equity, custody or a partnership. Later network behaviour can diverge from the text. Nothing here is investment, legal or technical advice.

Research status: Design paper. Last reviewed: 1 October 2026. This is a reading of a public paper, not investment, legal or security advice.