Research corpus ScalingBLC-STUDY-0175

The Espresso Sequencer

A shared sequencer orders transactions for many rollups. Each rollup still executes its own state. The sequencer sells order, not execution.

Official external source only
Design paper
Official source

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Record

Authors: Espresso Systems
Date: 2022
Publisher: Espresso Systems
Version: Source cited by the 2022 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0175
DOI: None recorded
Last reviewed: 1 October 2026
Licence: No licence recorded. Rights status under review.

No hash is published. This build does not store those PDF bytes, so a checksum would be invented. Where a legacy path exists, it points at the Internet Archive copy of the old library.

Direct answer

A shared sequencer orders transactions for many rollups. Each rollup still executes its own state. The sequencer sells order, not execution.

Where to read

Official source — Espresso note
Blockchain Lab study, the canonical readingOriginal commentary. Not a transcription of the paper.

Metadata and commentary only. The reading is the study page.

Full text

Full text is not published on this page. Public availability is not a licence to republish a document. Blockchain Lab has not recorded a licence that permits an HTML transcription, a training set, or a retrieval corpus of the paper. Text on this page is Blockchain Lab's own wording, or a pointer to a study that is also Blockchain Lab's wording.

What changed

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

Relationships

Canonical readingEspresso study
Related paperBased rollups
Related paperArbitrum

Cite this record

These citations point at the source document. They are not a licence to copy it.

Author–date

Systems, E. (2022). The Espresso Sequencer. Espresso Systems. https://hackmd.io/@EspressoSystems/EspressoSequencer

BibTeX

@techreport{sharedsequencing2022,
  title = {The Espresso Sequencer},
  author = {Espresso Systems},
  year = {2022},
  institution = {Espresso Systems},
  url = {https://hackmd.io/@EspressoSystems/EspressoSequencer},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/shared-sequencing}
}

RIS

TY  - RPRT
TI  - The Espresso Sequencer
AU  - Espresso Systems
PY  - 2022
PB  - Espresso Systems
UR  - https://hackmd.io/@EspressoSystems/EspressoSequencer
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0175",
    "title": "The Espresso Sequencer",
    "author": [
      {
        "literal": "Espresso Systems"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2022
        ]
      ]
    },
    "publisher": "Espresso Systems",
    "URL": "https://hackmd.io/@EspressoSystems/EspressoSequencer",
    "note": "Rights status: Official external source only. Not a licence to republish the paper."
  }
]

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Rights record

Source status: Official source
Use status: Metadata and commentary only. The reading is the study page.
Rights: Official external source only
Training and retrieval: Not permitted from this site. There is no rights-cleared full text to retrieve or to train on.

Rights and licensing Corrections