**Note** from Bead: Uri Guid Discussion · [canonical source](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/notes/found-images-uri-url-urn.md) · session 2026-07-08 · discussion: Talk: Uri Guid Discussion
Foraged 2026-07-08 for illustrations of the identifier vocabulary. Openly licensed images are captured into [artifacts/images/](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/) as external provenance with attribution below; proprietary ones are link-only.
## Captured: the URI / URL / URN set diagrams (Wikimedia Commons) Three takes on the same relationship, useful side by side because they disagree in an instructive way: - [uri-venn-diagram.svg](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/uri-venn-diagram.svg) - the classic textbook Venn: URI as the outer set, URL and URN as overlapping subsets. Source: [File:URI Venn Diagram.svg](https://commons.wikimedia.org/wiki/File:URI_Venn_Diagram.svg). - [uri-euler-diagram-no-lone-uris.svg](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/uri-euler-diagram-no-lone-uris.svg) - the corrected Euler version: every URI is a URL, a URN, or both, with no "lone URI" region. Source: [File:URI Euler Diagram no lone URIs.svg](https://commons.wikimedia.org/wiki/File:URI_Euler_Diagram_no_lone_URIs.svg). - [uri-pseudo-venn-basic.svg](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/uri-pseudo-venn-basic.svg) - the simplified teaching variant. Source: [File:URI pseudo-Venn basic.svg](https://commons.wikimedia.org/wiki/File:URI_pseudo-Venn_basic.svg). The disagreement between the first two is itself one of the "many definitions": whether URIs exist that are neither locators nor names. RFC 3986 deprecated the strict partition, which is why the Euler variant was drawn. Licenses per each Commons file page (linked above); all are free-license or public domain on Commons.
## Captured: URI syntax / URL anatomy - [uri-syntax-diagram.svg](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/uri-syntax-diagram.svg) - RFC 3986 component breakdown (scheme, authority with userinfo/host/port, path, query, fragment) as a syntax diagram, from the Wikipedia [URI article](https://en.wikipedia.org/wiki/Uniform_Resource_Identifier). Source: [File:URI syntax diagram.svg](https://en.wikipedia.org/wiki/File:URI_syntax_diagram.svg). - MDN's URL-anatomy series from [What is a URL?](https://developer.mozilla.org/en-US/docs/Learn_web_development/Howto/Web_mechanics/What_is_a_URL) (CC-BY-SA, © Mozilla Contributors), each highlighting one part of the same example URL: - [mdn-url-all.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-all.png) - the full URL with every part labeled - [mdn-url-protocol.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-protocol.png) - scheme - [mdn-url-authority.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-authority.png) - authority (domain + port) - [mdn-url-path.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-path.png) - path - [mdn-url-parameters.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-parameters.png) - query parameters - [mdn-url-anchor.png](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/images/mdn-url-anchor.png) - fragment/anchor (never sent to the server)
## Link-only (proprietary illustrations, view at source) - [ByteByteGo: URL, URI, URN differences](https://bytebytego.com/guides/url-uri-urn-do-you-know-the-differences/) - polished one-page infographic, the best single share-able explainer. - [Logto: Unveiling URI, URL, and URN](https://blog.logto.io/unveiling-uri-url-and-urn) - clean component-by-component color diagrams. - [Auth0: URL, URI, URN differences](https://auth0.com/blog/url-uri-urn-differences/) - identity-industry framing with examples. - [Damnhandy: URL vs URI vs URN, the confusion continues](https://damnhandy.com/2011/01/18/url-vs-uri-vs-urn-the-confusion-continues/) - the classic essay arguing most Venn diagrams overstate the URL/URN split; pairs well with the Euler diagram above. - [MDN URI reference](https://developer.mozilla.org/en-US/docs/Web/URI/Reference) - authoritative per-component reference (scheme, authority, path, query, fragment) if we want to redraw our own.
## Relevance to the bead The syntax diagrams map directly onto the bead URL anatomy figure in the [onboarding page](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/artifacts/mount-a-bead-onboarding.html): origin = scheme + authority, parciante and `.agents` = path segments with governance meaning, GUID = the opaque leaf. The Venn-vs-Euler disagreement feeds the "many definitions" thread in [definitions-uri-url-urn-iri.md](https://redfish.acequia.io/guerin/.agents/3bf89750-6b01-41ba-8a98-3db7136d0f56/2026-07-08/notes/definitions-uri-url-urn-iri.md).