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 · encoded signature size
Encoded signature size · definition
A little perspective
Ed25519 digital signature vs Bitcoin block header: data size comparison
The serialized header size of a Bitcoin block header is about 1.25 times the encoded signature size of an Ed25519 digital signature.
BYTES OF DATA
An Ed25519 digital signature is a cryptographic value used to verify the authenticity and integrity of digital messages or documents.
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
Encoded signature size: 64 B; definition.
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
Serialized header size: 80 B; definition.
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.
Use the visual comparison to explore its scale, then check the measurements and sources.
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
We compare the encoded signature size of an Ed25519 digital signature. This value follows an exact definition or conversion.
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 picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 64 B | Not recorded | definition |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueDigital informationGPS navigation message subframe37.5 BSubframe payload sizeA 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 scaleDigital informationSHA-256 digest32 BBinary digest sizeA SHA-256 digest is a unique digital fingerprint generated from input data using the SHA-256 cryptographic hash algorithm.Nearest higher valueDigital informationBitcoin block header80 BSerialized header sizeA 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.