CC0 1.0 Universal (CC0 1.0) Public Domain Dedication

Also known as CC Zero , CC0 1.0, CC0 1.0 Universal, CC0 1.0 Universal Public Domain Dedication, Creative Commons Zero 1.0 Universal.

Commercial use: allowed
Share alike: not required
Attribution: not required

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Write this as a license text (needs an account) DALICC reads the model above and writes what it permits, requires and prohibits in plain English. Without an account, the Text download above writes the model out from the vocabulary.

Canonical URI https://dalicc.net/licenselibrary/Cc010Universal

Permissions

Change license from the text
Charge distribution fee from the text
Commercial use from the text
Derivative works from the text
Derive from the text
Display from the text
Distribute from the text
Modified works from the text
Modify from the text
Present from the text
Reproduce from the text

Prohibitions

Promote from the text

License-wide duties

This license states no duties that apply to the work as a whole.

What applies by default

The statements above are the library's reading of this license: each is marked with the sentence it rests on, or as a library convention where the text is not explicit. The statements below are the ones the DALICC reasoner supplies for acts the license says nothing about, from the default rules of the dependency graph it reasons with. Each one names the legal source it rests on. None of it is in the record.

No default rule of that graph reaches this license: it speaks about every act the rules are about.

Clauses

Warranty disclaimer

Affirmer offers the Work as-is and makes no representations or warranties of any kind concerning the Work, express, implied, statutory or otherwise, including without limitation warranties of title, merchantability, fitness for a particular purpose, non infringement, or the absence of latent or other defects, accuracy, or the present or absence of errors, whether or not discoverable, all to the greatest extent permissible under applicable law. Affirmer understands and acknowledges that Creative Commons is not a party to this document and has no duty or obligation with respect to this CC0 or use of the Work.

Limitation of liability

No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document. Affirmer disclaims responsibility for clearing rights of other persons that may apply to the Work or any use thereof, including without limitation any person's Copyright and Related Rights in the Work. Further, Affirmer disclaims responsibility for obtaining any necessary consents, permissions or other rights required for any use of the Work.

Additional clauses

Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "License").

Info

Target asset types: Creative work (i.e. text, picture, sound, movie), Dataset
Region / jurisdiction: Worldwide
Validity: Perpetual
Source: https://creativecommons.org/publicdomain/zero/1.0/
Legal code: https://creativecommons.org/publicdomain/zero/1.0/legalcode
This description is published under: Creative Commons Attribution 4.0 International
Publisher: Creative Commons
SPDX identifier: CC0-1.0 on the SPDX license list
DALICC identifier: Cc010Universal

This record is published under CC BY 4.0. Credit it as: DALICC License Library, DALICC - Verein zur Förderung der Rechtssicherheit in der Datenbewirtschaftung, https://dalicc.net, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The license it describes belongs to its publisher.

Use this license

Everything below is generated from this record. Replace the example address with the address of your own work.

JSON sidecar

{
  "license-uri": "https://dalicc.net/licenselibrary/Cc010Universal",
  "license-title": "CC0 1.0 Universal (CC0 1.0) Public Domain Dedication",
  "spdx-id": "CC0-1.0",
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle

@prefix cc: <http://creativecommons.org/ns#> .

<https://example.org/my-work>
    cc:license <https://dalicc.net/licenselibrary/Cc010Universal> .

RDF, JSON-LD

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/Cc010Universal"
  }
}

This license carries no attribution duty, so no credit line is offered here.

Badge

Markdown

[![License: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication](https://dalicc.net/license-library/Cc010Universal/badge.svg)](https://dalicc.net/license-library/Cc010Universal)

HTML

<a href="https://dalicc.net/license-library/Cc010Universal"><img src="https://dalicc.net/license-library/Cc010Universal/badge.svg" alt="License: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication"></a>

Review

Status: Reviewed against the license text
Last checked: 2026-09-15
Reviewer: Giray Havur
Verdict: corrected during the review
Record changed since this review: yes (version 2, 2026-09-24)
Findings: 13 recorded, 2 applied to the record, 0 proposed

CC0 is a dedication, not a licence, and the record models it as one: every act is permitted, no duty is imposed anywhere, and the only prohibition is the use of the affirmer's trademarks. Applied: spdx:licenseId and the public-licence fallback of Section 3, which is the clause that makes CC0 work in jurisdictions where a dedication to the public domain is ineffective. The waiver covers sui generis database rights expressly, which the model can only show through the dataset asset type.

13 findings

minor Rubric 1 spdx:licenseId applied

The record carried no SPDX identifier. Its cc:legalcode, https://creativecommons.org/publicdomain/zero/1.0/legalcode, is the seeAlso URL of the SPDX entry CC0-1.0, Creative Commons Zero v1.0 Universal. Added.
info Rubric 1 dct:title none

Title, alternatives, cc:legalcode and dct:source all name CC0 1.0 Universal and resolve.
info Rubric 2 odrl:target none

The asset collection is dalicc:CreativeWork plus dcmitype:Dataset. The dataset type is not decoration: Section 1(vi) names the sui generis database rights of Directive 96/9/EC among the rights waived.
info Rubric 3 odrl:permission none

Every act is permitted, which is what the text says: Section 2 waives "all of Affirmer's Copyright and Related Rights ... in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes". dalicc:ChangeLicense is among the permissions, correctly: after a waiver there is no licence left to keep.
info Rubric 4 odrl:prohibition none

The single prohibition, dalicc:promote, is supported by Section 4(a): "No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document." It restricts the use of the affirmer's marks, not promotional use of the work itself, which Section 2 expressly allows.
info Rubric 5 odrl:duty none

The record carries no duty at all, which is correct for a dedication: CC0 imposes no attribution and no notice requirement. The family-rule baseline lists this record among the four where no attribution duty is expected.
minor Rubric 6 dalicc:additionalClauses applied

Section 3, the public-licence fallback, was missing from the record although it is the operative clause wherever the waiver fails: it grants a royalty-free, irrevocable, unconditional licence for any purpose whatsoever as a second line of defence. Quoted verbatim into dalicc:additionalClauses.
info Rubric 6 dalicc:WarrantyDisclaimer none

dalicc:WarrantyDisclaimer is Section 4(b) and 4(d) and dalicc:LiabilityLimitation is Section 4(a) and 4(c), both quoted verbatim. Placing the trademark and patent reservation under a field named LiabilityLimitation is loose, but the text is accurate and the alternative, moving it to additionalClauses, would lose it from the clause view of the site.
info Rubric 7 cc:jurisdiction none

dalicc:worldwide and dalicc:perpetual are both supported: the waiver runs "(i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions)" and is expressly not subject to revocation, rescission, cancellation or termination.
gap Rubric 8 record none

Two things cannot be said with the present vocabulary. First, that this record is a dedication rather than a licence: nothing distinguishes it from a very permissive licence, and the composer treats it the same way. Proposed term: dalicc:publicDomainDedication, a policy quality next to dalicc:validityType. Second, the express non-waiver of patent rights: dalicc:patentFree exists as a concept but says the opposite. Proposed term: dalicc:patentRightsReserved.
gap Rubric 8 record none

Section 4(c), that the affirmer disclaims responsibility for clearing third-party rights and for obtaining consents, and the statement that Creative Commons is not a party to the document, have no term either. They are carried as clause text instead.
info Rubric 9 record none

The consistency check reports no conflict, before and after the corrections.
info Rubric 10 record none

CC0 shares its deontic signature with OdcPublicDomainDedicationAndLicence, the Open Data Commons PDDL, which the review of duplicates (see the review method, docs/LICENSE_REVIEW.md section 3) flags. The two records should be indistinguishable to the compatibility checker, because the two documents do the same thing: a dedication with a licence fallback. The separation into two records is justified by provenance, the publisher and the legal text differ, not by the model. Both now carry their fallback clause in dalicc:additionalClauses, so the records differ in the one place where the documents differ.

Report an issue The review record as JSON The review checks the model against the license text. It is not legal advice.

History

This license model has 2 versions. Version 2 is the one served today; every earlier version keeps its own address, so a conclusion drawn from one of them can still be checked against it.

Version 2 current2026-09-24 Giray Havur

The content review of 2026-09-15 added 1 clause text and 1 identification detail and recorded the review state. Later changes recorded which sentence of the text each statement rests on and named the license the record itself is published under.

View version 2 JSON-LD Turtle RDF/XML
6 changes
- added dalicc:additionalClauses "Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the \"License\")."
  
  Review finding Section 3, the public-licence fallback, was missing from the record although it is the operative clause wherever the waiver fails: it grants a royalty-free, irrevocable, unconditional licence for any purpose whatsoever as a second line of defence. Quoted verbatim into dalicc:additionalClauses.
- added dalicc:reviewStatus dalicc:Reviewed
  
  Review state Every record records how far it has come in the editorial workflow and when it was last checked against the legal text.
- added dalicc:reviewedOn "2026-09-15"^^xsd:date
  
  Review state Every record records how far it has come in the editorial workflow and when it was last checked against the legal text.
- added spdx:licenseId "CC0-1.0"
  
  Review finding The record carried no SPDX identifier. Its cc:legalcode, https://creativecommons.org/publicdomain/zero/1.0/legalcode, is the seeAlso URL of the SPDX entry CC0-1.0, Creative Commons Zero v1.0 Universal. Added.
- changed prohibition dalicc:promote
  
  was prohibition dalicc:promote
  
  Manual edit The statement now quotes the sentence of the licence text it rests on: "No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document. b."
- added dct:license <https://creativecommons.org/licenses/by/4.0/>
  
  Manual edit Every record is published under CC BY 4.0. cc:license names the record DALICC keeps of that licence; dct:license now names it by the address Creative Commons publishes it at, so that a consumer matching the canonical IRI finds it.
Version 1

The version this model had before the content review of 2026-09-15.

View version 1 JSON-LD Turtle RDF/XML

Every change names the reason behind it: a finding of the content review, one of its library-wide decisions, the metadata that review wrote onto every record, or a hand edit. None of it is legal advice.

Nothing on this page is legal advice. What a license means is decided by its text; ask a legal advisor before you rely on it.