Ed25519 digital signature
An Ed25519 digital signature is a cryptographic value used to verify the authenticity and integrity of digital messages or documents.
How big is it?
64 B of data
Encoded signature size · specified
A little perspective
Bitcoin block header is about 1.25 times larger on this measurement.
Bitcoin block header: A Bitcoin block header is a fixed-format data structure containing summary information about a block in the Bitcoin blockchain.
Measurements, assumptions & sources +
Ed25519 digital signature
An Ed25519 signature is defined as 64 bytes. This counts the signature value only, excluding the message, public key, protocol framing and text encodings such as hexadecimal or Base64.
Defined examples — our methodology
The marked encoded signature size is calibrated. Unmeasured illustration details are representative.
Bitcoin block header
The serialized Bitcoin block header is defined as 80 bytes. This excludes transactions, network framing and any display encoding.
Defined examples — our methodology
The marked serialized header size is calibrated. Unmeasured illustration details are representative.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 64 B
For comparison, this page uses encoded signature size. The record labels this value specified, so the stated convention rather than an inferred average controls the comparison.
An Ed25519 signature is defined as 64 bytes. This counts the signature value only, excluding the message, public key, protocol framing and text encodings such as hexadecimal or Base64.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Ed25519 digital signature dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 64 B | Not recorded | specified |
Around this scale
Go smaller. Go bigger.
These links use compatible data records, ordered around the selected value.
Nearest lower value · DigitalGPS navigation message subframe37.5 BA GPS navigation message subframe is a segment of digital data transmitted by GPS satellites to provide positioning and timing information to receivers.Around the same scale · DigitalSHA-256 digest32 BA SHA-256 digest is a unique digital fingerprint generated from input data using the SHA-256 cryptographic hash algorithm.Nearest higher value · DigitalBitcoin block header80 BA Bitcoin block header is a fixed-format data structure containing summary information about a block in the Bitcoin blockchain.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
There’s always another scale
Follow your curiosity.
DigitalBitcoin block header80 BA Bitcoin block header is a fixed-format data structure containing summary information about a block in the Bitcoin blockchain.DigitalSHA-256 digest32 BA SHA-256 digest is a unique digital fingerprint generated from input data using the SHA-256 cryptographic hash algorithm.DigitalGPS navigation message subframe37.5 BA GPS navigation message subframe is a segment of digital data transmitted by GPS satellites to provide positioning and timing information to receivers.DigitalIPv6 address16 BAn IPv6 address is a numerical label used to identify devices on a computer network using the Internet Protocol version 6.DigitalUniversally unique identifier16 BA universally unique identifier is a standardised alphanumeric code used to distinguish information or objects in computer systems.
DigitalText page3 kBA digital file containing one page of plain text characters without formatting or embedded fonts.
DigitalASCII character1 BAn ASCII character is a letter, digit, punctuation mark or control code encoded using the American Standard Code for Information Interchange.DigitalEthernet MAC address6 BAn Ethernet MAC address is a unique identifier assigned to network interfaces for communications on physical networks.