Universal unique identifiers
Category ID identifiers · 36 types
| ID | Name | Categories | Countries | Description |
|---|---|---|---|---|
| aws_account_id | AWS account ID draft | identifiers | global | Twelve-digit number that identifies an Amazon Web Services account, for example in the account field of an ARN. AWS states that account... |
| caip10_account_id | Blockchain account ID (CAIP-10) draft | cryptocurrency, identifiers | global | Chain-agnostic identifier of an account defined by CAIP-10: a CAIP-2 blockchain ID, a colon and the account address in the format of... |
| caip2_chain_id | Blockchain ID (CAIP-2) draft | cryptocurrency, identifiers | global | Chain-agnostic identifier of a blockchain defined by CAIP-2: a namespace of 3 to 8 lower-case letters, digits or hyphens that names an... |
| cuid | CUID (collision-resistant unique identifier) draft | identifiers | global | Identifier of the cuid library, written as the letter c followed by 24 lowercase base36 characters that encode a timestamp, a counter, a... |
| cuid2 | Cuid2 identifier draft | identifiers | global | Identifier of the Cuid2 library, the successor of cuid. It is a SHA-3 hash of a timestamp, a counter, a host fingerprint and random... |
| cusip | CUSIP (Committee on Uniform Securities Identification Procedures) | finances, identifiers | US, CA | A CUSIP is a nine-digit numeric (e.g. 037833100 for Apple) or nine-character alphanumeric (e.g. 38259P508 for Google) code that... |
| cz_data_box_id | Czech data box ID (ID datové schránky) PII draft | government, identifiers | CZ | Identifier of a data box (datová schránka) in the Czech information system of data boxes (ISDS), which public authorities, companies,... |
| dcid | Datacommons unique id | identifiers | global | Every entity in Data Commons (DC) has a unique identifier, called ‘dcid’. So, for example, the dcid of California is ‘geoId/06’ and of... |
| did | Decentralized identifier (DID) draft | identifiers | global | Identifier defined by the W3C Recommendation Decentralized Identifiers (DIDs) v1.0 (2022). It has the form... |
| doi | Digital Object Identifier (DOI) | science, identifiers | global | A digital object identifier (DOI) is a persistent identifier or handle used to identify objects uniquely, standardized by the... |
| doiprefix | Digital Object Identifier (DOI) prefix | science, identifiers | global | Identifier specific to a DOI registrant |
| eidr | Entertainment Identifier Registry (EIDR) content ID | identifiers, media | global | Identifier of a film, television or radio work in the Entertainment Identifier Registry, which studios, broadcasters and distributors... |
| eidr_party_id | EIDR party ID draft | identifiers, media, companies | global | Identifier of a party, a company such as a studio, producer, broadcaster or distributor, in the Entertainment Identifier Registry. It is... |
| eui64 | EUI-64 identifier PII draft | internet, identifiers | global | 64-bit Extended Unique Identifier of the IEEE: an OUI or a longer company identifier followed by an extension that the organization... |
| grid | Global Research Identifier | science, identifiers | global | Global Research Identifier Database (GRID) is a database of educational and research organizations worldwide, created and maintained by... |
| id | Unique identifier draft | identifiers | global | Generic identifier of a record or object, unique within a database or dataset or globally and persistently. Use a more specific type,... |
| ipfs_cid | Content identifier (CID) of IPFS and IPLD draft | identifiers, internet, cryptography | global | Self-describing content address of the multiformats CID specification, used by IPFS, IPLD, Filecoin and the AT Protocol. It is made from... |
| isni | International Standard Name Identifier | science, objectids, identifiers | global | The International Standard Name Identifier (ISNI) is an identifier system for uniquely identifying the public identities of contributors... |
| ksuid | KSUID (K-Sortable Unique Identifier) draft | identifiers | global | 160-bit identifier from Segment's ksuid library. It is a 32-bit timestamp in seconds since 13 May 2014 (Unix time 1400000000) followed... |
| mac_address | MAC address (Media Access Control) PII | internet, identifiers, pii | global | 48-bit hardware address (EUI-48) of a network interface in Ethernet, Wi-Fi, Bluetooth and other IEEE 802 networks, used to deliver... |
| magnet_link | Magnet URI (BitTorrent) | internet, identifiers | global | URI of the magnet: scheme that identifies a file or a torrent by a hash of its content instead of by its location, used by BitTorrent... |
| mongodbid | MongoDB unique Object ID | identifiers, common | global | MongoDB ObjectId, the unique id that MongoDB assigns to each document of a collection as the field _id. It is a 12-byte value written as... |
| nanoid | Nano ID draft | identifiers | global | Random identifier of the Nano ID library. By default it is 21 characters of the URL-safe alphabet A-Z, a-z, 0-9, underscore and hyphen,... |
| openalexid | OpenAlex ID | science, identifiers | global | Identifier of an entity in OpenAlex, the open catalogue of scholarly works: a letter for the entity type and a number. W is a work, A an... |
| ru_eipsk_id | Identifier in the Russian Unified Information Space of Culture (EIPSK) draft | identifiers, companies | RU | Numeric identifier of a place, an organization or an event in the Unified Information Space in the Sphere of Culture (ЕИПСК). The open... |
| snowflake_id | Snowflake ID draft | identifiers | global | 64-bit identifier scheme that Twitter introduced in 2010 and that X, Discord, Instagram, Mastodon and other services use, each with its... |
| torrent_info_hash | BitTorrent Info Hash (BTIH) | internet, identifiers, cryptography | global | Identifier of a torrent: the hash of the bencoded info dictionary of its .torrent file. Version 1 torrents (BEP 3) use SHA-1, written as... |
| typeid | TypeID (type-prefixed UUIDv7) draft | identifiers | global | Identifier from the TypeID specification of Jetify, a UUIDv7 with a type prefix. It has the form <prefix>_<suffix>. The prefix names the... |
| ulid | ULID (Universally Unique Lexicographically Sortable Identifier) | identifiers | global | 128-bit identifier from the ULID specification. The first 48 bits are the Unix time in milliseconds and the other 80 bits are random, so... |
| useruuid | User UUID draft | useraccounts, identifiers | global | UUID that identifies a user account, typically in a column such as user_uuid, account_uuid or user_guid. The value has the UUID format... |
| uuid | Universally unique identifier (UUID) | identifiers | global | 128-bit identifier that systems generate without a central registry, defined by RFC 9562 (2024), which replaced RFC 4122. Microsoft... |
| uuid_urn | UUID as a URN (urn:uuid) pattern draft | identifiers | global | A UUID written as a URN in the uuid namespace, urn:uuid:<UUID>, as RFC 9562 defines. It is used where an identifier must be a URI, for... |
| uuid_v1 | Time-based UUID (version 1) draft | identifiers | global | UUID of version 1 under RFC 9562. It holds a 60-bit count of 100-nanosecond intervals since 15 October 1582, a clock sequence and a... |
| uuid_v4 | Random UUID (version 4) draft | identifiers | global | UUID of version 4 under RFC 9562. Apart from the version and variant bits, its 122 bits are random, so it carries no time or host... |
| uuid_v7 | Unix time-ordered UUID (version 7) draft | identifiers | global | UUID of version 7, introduced by RFC 9562 in 2024. The first 48 bits are the Unix time in milliseconds, and the rest, apart from the... |
| xid | xid globally unique ID draft | identifiers | global | 96-bit identifier of the Go library rs/xid. It uses the MongoDB ObjectId layout (a 4-byte time in seconds, a 3-byte machine ID, a 2-byte... |