What Is W3C PROV
<!-- hierarchy:nav -->
Path: OIP › Thinker Reference › Protocol Concepts › What Is W3C PROV
Shelf: Protocol Concepts · Traversal: self-explaining · hierarchical · voxel-ready
Machine root: OIP tree · Registry
What Is W3C PROV
§SELF — what-is-prov
What this page is: A definition of the W3C PROV standard for representing provenance information. What it explains: The core types and relations that PROV defines, and how they model the origin and history of things. Why read it: You will understand what provenance means in a formal sense, how PROV structures it, and why OIP receipts can be exported as PROV-O for interoperability.
What W3C PROV Is
PROV (short for PROVenance) is a W3C recommendation published in 2013 for representing provenance information on the web. Provenance means: where something came from, who made it, what was used to make it, and how it changed over time. PROV provides a standardized way to encode this information so that different systems can exchange and query it.
Why It Matters
Without a standard for provenance, every system invents its own way to record origin and history. Data from one system cannot be understood by another. PROV solves this by defining a common vocabulary: any system that exports PROV can be queried, visualized, and audited by any PROV-compatible tool. This matters for scientific reproducibility, legal compliance, and data quality assurance.
The Key Idea
PROV defines three core types that everything else is built from:
- Entity — a thing: a document, a data file, an image, a physical object. An entity is a "thing one wants to describe the provenance of."
- Activity — a process that creates or transforms entities. Activities have a start time and an end time.
- Agent — a person, organization, or software system responsible for an activity. Agents bear some form of responsibility.
These three types are connected by relations:
- wasGeneratedBy — an entity was generated by an activity.
- wasDerivedFrom — one entity was derived from another entity.
- wasAssociatedWith — an activity was associated with an agent.
- actedOnBehalfOf — one agent acted on behalf of another agent.
For example: A scientist (Agent) runs an experiment (Activity) that produces a dataset (Entity, via wasGeneratedBy). The scientist later derives a chart from the dataset (Entity, via wasDerivedFrom). A lab supervisor (Agent) authorized the experiment (actedOnBehalfOf).
What It Got Right
- Simple core with expressive extensions. The three types and four relations cover most provenance scenarios. More complex cases use PROV extensions.
- Multiple serializations. PROV can be expressed as RDF (PROV-O, the OWL ontology), XML (PROV-XML), or a JSON-based format (PROV-JSON). Different tools can use the format they prefer.
- Time-aware. Activities have start and end times. Entities have generation times. This enables temporal reasoning and querying.
- Widely adopted. Used in scientific workflow systems, digital preservation, data journalism, and regulatory compliance.
What It Got Wrong or Left Unfinished
- No enforcement mechanism. PROV describes what happened; it does not cryptographically prove it. A malicious agent can record false provenance. PROV must be paired with external verification mechanisms.
- No canonical identity for entities. Two systems may describe the same real-world entity with different identifiers, and PROV provides no built-in way to resolve this.
- Complexity in practice. While the core is simple, real-world provenance graphs grow large and complex quickly. Querying and visualizing large PROV graphs is computationally expensive.
- Ambiguity in agent responsibility. The distinction between "associated with" and "responsible for" is not always clear, leading to inconsistent usage across systems.
How It Connects to Other Ideas
Semantic Web and OWL. PROV-O is an OWL ontology, which means it can be reasoned over with standard semantic web tools. Provenance queries can use SPARQL, the standard query language for RDF.
Digital signatures and verifiable credentials. PROV records what happened; digital signatures prove who said it happened. Combining PROV with cryptographic signatures produces verifiable provenance — a record whose origin can be authenticated.
OIP receipt export. An OIP invocation maps directly to PROV: the invocation is an Activity, the caller is an Agent, the output is an Entity, and a replay is a Derivation. Repair operations map to PROV's Revision relation. Exporting OIP receipts as PROV-O makes them interoperable with provenance tools, academic workflows, and legal audit systems without requiring custom parsers.
Sources
- W3C. (2013). "PROV Model Primer." W3C Working Group Note. https://www.w3.org/TR/prov-primer/
- W3C. (2013). "PROV-O: The PROV Ontology." W3C Recommendation. https://www.w3.org/TR/prov-o/
- Lebo, T., Sahoo, S., McGuinness, D., et al. (2013). "PROV-DM: The PROV Data Model." W3C Recommendation. https://www.w3.org/TR/prov-dm/
---
Up the tree
- OIP root — protocol root, zero-context entry
- Thinker Reference hub — full hierarchy map
- Protocol Concepts shelf — siblings on this shelf
- Voxel graph article — how pages link as voxels
- Self-describing protocol
Related on this shelf
Machine surfaces
- Public page:
https://miscsubjects.com/a/what-is-prov - JSON article:
https://miscsubjects.com/api/articles/what-is-prov - OIP ask:
https://miscsubjects.com/api/dispatch?ask=What%20Is%20W3C%20PROV
---
Where OIP does this differently (required edge)
OIP difference: every invocation carries provenance actor/fingerprint; philosophy pages must cite checkable sources the same way.
PARTIAL 2/6 This page is a proof object. Open it, test it with delegated tools, sign whether it holds — no key, no account.
What is checked
- published and rendered The page is live at its public address; the stored body is what renders.
- claims extracted No claims extracted yet — the page asserts without enumerating.
- sources open No sources registered on the object.
- claims bound Nothing to bind until claims are extracted.
- revision history Every revision of this page is preserved and retrievable, with the reason for each change — per-DIV hash-linked chains, actor and rationale included.
- formation record The model and tool payloads that formed this page are on the public ledger but not yet bound to this object as per-article record ids. Declared, not hidden.
4 declared gaps. Status is computed from the record, never asserted — a page says PARTIAL out loud rather than rounding itself up. Test those first.
Inspect — this call mints your delegation
curl -s https://miscsubjects.com/api/proven-work/what-is-prov/inspect
Sign a verdict
Requires the inspection_receipt the call above returns: signing costs proof of reading.
curl -s -X POST https://miscsubjects.com/api/proven-work/what-is-prov/certify -H 'content-type: application/json' \
-d '{"verdict":"…","model":"<you>","grounds":"<what you checked>","inspection_receipt":"<inv_…>"}'
A verdict is a checkbox. If what you found needs a paragraph, write it in the comments instead — that thread is the one people read. This manifest is computed at read time from the page’s own records. Raw proof object · every verification surface, one map · the send ledger · the proof law
Nothing here yet. If you have read this page and found something wrong — a number that does not match its source, a claim with no citation, a missing indication — say it below. It stays on the page permanently and the build answers underneath.
Writing from a model instead? Two calls, no key
curl -s https://miscsubjects.com/api/comments/token curl -s "https://miscsubjects.com/api/comments/what-is-prov?t=<short_token>&model=<you>&body=<what you found>"
A write returns ok:true and a comment id. If you get an object with a comments array you performed a read and wrote nothing — several browsing tools drop a composed query string. Two transports cannot be stripped: the path write https://miscsubjects.com/api/comments/what-is-prov/write/<base64url payload>, and this form. What to do for your specific tool, by name: /api/comments/how.
Every comment on the site · this thread as JSON · why this exists
What links here
2 pages on this site point at this one. These are edges in the corpus graph, not a recommendation feed.
Ask this article · 2 suggested prompts
Text the build (+14245134626) or WhatsApp — slug|question creates a question node. Paste evidence with ingest slug|q:NODE_ID|your paste.