KSUID (K-Sortable Unique Identifier)

ID ksuid

DatatypeNot PIIidentifierDraft

This record is a draft: it has not been reviewed yet and may be incomplete or wrong. Do not rely on it for compliance decisions. Help improve it (see CONTRIBUTING.md).

160-bit identifier from Segment's ksuid library. It is a 32-bit timestamp in seconds since 13 May 2014 (Unix time 1400000000) followed by 128 random bits, so values sort by creation time. The text form is always 27 base62 characters (digits, uppercase and lowercase letters) without separators. The largest KSUID is aWgEPTl1tmebfsQzFP4bxwgy80V, so the first character is a digit, an uppercase letter or a.

Categories: Universal unique identifiers
Countries: Global (not tied to a country)
Languages: Common to most languages
Quality: 80/100 · missing: mapping (Wikidata, Schema.org, ...), detector coverage
Metacrafter rules: no detection rule yet
Supported by tools: no tool record lists this type yet

Regular expression

^[0-9A-Za][0-9A-Za-z]{26}$

Python re syntax.

Examples

Value	Description
0ujtsYcgvSTl8PAuAdqWYSMnLOv	KSUID inspected in the ksuid README, created 2017-10-10 04:00:47 UTC
0ujsswThIGTUYm2K8FjOOfXtY1K	KSUID generated in the ksuid README
aWgEPTl1tmebfsQzFP4bxwgy80V	Largest KSUID
0ujtsYcgvSTl8PAuAdqWYSMnLO invalid	26 characters
0ujtsYcgvSTl8PAuAdqWYSM-LOv invalid	The hyphen is not a base62 character

Translations

Language	Name	Description
Russian	KSUID (K-сортируемый уникальный идентификатор)

Sources

doc: https://github.com/segmentio/ksuid

Use this record

Page URL: http://registry.apicrafter.io/datatype/ksuid
JSON: API v1 · legacy shape (used by metacrafter) · Markdown (for LLMs)
Improve it: edit data/datatypes/any/identifiers/ksuid.yaml on GitHub