Research corpus ScalingBLC-STUDY-0290

Bitwise shifting instructions in EVM

EIP 145, Bitwise shifting instructions in EVM. Native bitwise shifting instructions are introduced, which are more efficient processing wise on the host and are cheaper to use by a contract.

Official external source only
Design paper
Official source

Compare

Record

Authors: Alex Beregszaszi , Paweł Bylica
Date: 2017
Publisher: Alex Beregszaszi , Paweł Bylica
Version: Source cited by the 2017 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0290
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

EIP 145, Bitwise shifting instructions in EVM. Native bitwise shifting instructions are introduced, which are more efficient processing wise on the host and are cheaper to use by a contract.

Where to read

Official source — EIP 145
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

Status in the source: Final. A reading of the public specification, not a copy of it and not a certification.

Relationships

Canonical readingEIP 145 study
Related paperEIP-4844
Related paperPlasma
Related paperArbitrum

Cite this record

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

Author–date

Beregszaszi, A., & Bylica, P. (2017). Bitwise shifting instructions in EVM. Alex Beregszaszi , Paweł Bylica. https://eips.ethereum.org/EIPS/eip-145

BibTeX

@techreport{eip1452017,
  title = {Bitwise shifting instructions in EVM},
  author = {Alex Beregszaszi , Paweł Bylica},
  year = {2017},
  institution = {Alex Beregszaszi , Paweł Bylica},
  url = {https://eips.ethereum.org/EIPS/eip-145},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/eip-145}
}

RIS

TY  - RPRT
TI  - Bitwise shifting instructions in EVM
AU  - Alex Beregszaszi
AU  - Paweł Bylica
PY  - 2017
PB  - Alex Beregszaszi , Paweł Bylica
UR  - https://eips.ethereum.org/EIPS/eip-145
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0290",
    "title": "Bitwise shifting instructions in EVM",
    "author": [
      {
        "literal": "Alex Beregszaszi"
      },
      {
        "literal": "Paweł Bylica"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2017
        ]
      ]
    },
    "publisher": "Alex Beregszaszi , Paweł Bylica",
    "URL": "https://eips.ethereum.org/EIPS/eip-145",
    "note": "Rights status: Official external source only. Not a licence to republish the paper."
  }
]

JSON BibTeX file RIS file CSL-JSON

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