DEVELOPMENT VERSION: This is an experimental DALICC environment. Features, data and APIs may change or be reset without notice. A stable version of this service, with a potentially different feature set, will be made available soon at dalicc.net.

2026

Attribution Assurance License

Also known as AAL.

Commercial use
allowed
Share alike
not required
Attribution
required (keep the copyright and license notices)
Compare with… Add to the compatibility check Download JSON-LD Turtle RDF/XML Text

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/AAL

Permissions

  • Charge distribution fee from the text Charging a fee for the act of providing a copy of the work to someone else.
  • Charge license fee from the text Charging a fee for granting someone a license to the work.
  • Commercial use from the text Using the work to generate income, directly or indirectly, for example by selling it or by using it in advertising.
  • Derivative works from the text Distributing an adaptation of the work and making it available to the public.

    Duties

    • Attribution from the text The text says: "Redistributions of the Code in binary form must be accompanied by this GPG-signed text in any documentation and, each time the resulting executable program or a program dependent thereon is launched, a prominent display (e.g., splash screen or banner text) of the Author's attribution information, which includes:" Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Derive from the text Creating a new work from the work, such as a translation, adaptation or arrangement of it or of a part of it.
  • Display from the text Showing the work to the public without making a copy the viewer keeps.
  • Distribute from the text Providing copies of the work to the public or to anyone else.

    Duties

    • Attribution from the text The text says: "Redistributions of the Code in binary form must be accompanied by this GPG-signed text in any documentation and, each time the resulting executable program or a program dependent thereon is launched, a prominent display (e.g., splash screen or banner text) of the Author's attribution information, which includes:" Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Grant use from the text Granting third parties the right to use the work.
  • Modify from the text Altering the work, for example by updating it, without creating a new work; an alteration that creates a new work is Derive.
  • No-warranty notice from the text Attaching a notice that the work is provided without any warranty.
  • Present from the text Performing the work in public, including by broadcast or other communication to the public.
  • Reproduce from the text Making copies of the work in any form.

Prohibitions

  • Add statement from the text Not permitted: Add statement. Attaching terms, notices or statements of one's own to the work or to one's modifications when passing it on.
  • Promote from the text Not permitted: Promote. The text says: "Neither the name nor any trademark of the Author may be used to endorse or promote products derived from this software without specific prior written permission." Using the name or trademarks of the licensor or of contributors to endorse or promote a product.
  • Share alike from the text Not permitted: Share alike. Adaptations have to be licensed under the same license or one the license names as compatible.

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

THIS FREE SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

Limitation of liability

IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, EFFECTS OF UNAUTHORIZED OR MALICIOUS NETWORK ACCESS; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Info

Target asset types
Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
http://opensource.org/licenses/AAL
Legal code
http://opensource.org/licenses/AAL
This description is published under
Creative Commons Attribution 4.0 International
Publisher
Edwin A. Suominen
Attribution name
Edwin A. Suominen
SPDX identifier
AAL on the SPDX license list
DALICC identifier
AAL

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/AAL",
  "license-title": "Attribution Assurance License",
  "spdx-id": "AAL",
  "attribution": "Copyright (c) [year] [copyright holder]",
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle 

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

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

RDF, JSON-LD 

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

HTML attribution 

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/AAL" rel="license">Attribution Assurance License</a>.</p>

This license asks for attribution, so the credit line is part of it.

Badge DALICC badge for Attribution Assurance License

Markdown 

[![License: Attribution Assurance License](https://dalicc.net/license-library/AAL/badge.svg)](https://dalicc.net/license-library/AAL)

HTML 

<a href="https://dalicc.net/license-library/AAL"><img src="https://dalicc.net/license-library/AAL/badge.svg" alt="License: Attribution Assurance License"></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
6 recorded, 1 applied to the record, 3 proposed

The Attribution Assurance License is a BSD-style permissive license with an unusually heavy attribution condition: the signed text must be displayed in source redistributions and the author's name, professional identification and URL must be shown each time the program is launched. The record has the right permissions and the right trademark prohibition; the share-alike prohibition and the added-statement prohibition have no basis in the text.

6 findings

  • major Rubric 5 odrl:prohibition proposed

    cc:ShareAlike is prohibited. The text has four numbered conditions and none of them concerns the terms a redistributor may choose; it is adapted from the BSD license, which is silent on reciprocity. A silent license must carry no share-alike statement rather than a prohibition, because the prohibition changes the compatibility outcome.

  • minor Rubric 4 odrl:prohibition proposed

    dalicc:addStatement is prohibited without support: nothing in the four conditions stops a redistributor from adding its own notices.

  • info Rubric 4 odrl:prohibition none

    dalicc:promote is prohibited and condition 3 supports it: "Neither the name nor any trademark of the Author may be used to endorse or promote products derived from this software without specific prior written permission."

  • minor Rubric 5 odrl:duty proposed

    The attribution and notice duties sit on cc:DerivativeWorks and odrl:distribute, while odrl:modify and odrl:derive are bare. Condition 1 applies to redistributions "in whole or part and with or without modification", so the duties belong on modify and derive too.

  • gap Rubric 8 vocabulary none

    Condition 2 requires a runtime attribution display: "each time the resulting executable program or a program dependent thereon is launched, a prominent display (e.g., splash screen or banner text) of the Author's attribution information". cc:Attribution cannot say where or when. Proposed term: dalicc:runtimeAttributionDisplay. Condition 1 also requires the text to be GPG-signed and verifiable, which has no term either.

  • minor Rubric 10 record applied

    Standard-license addition of 2026-09-15, decision 9 and 10: the record was corrected against its new siblings and versioned. Library convention 10: the disclaimer paragraph held both the warranty sentence and the liability sentence, which begins 'IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE'. It is split, as the 116 records of the standard-license addition split it.

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.

  1. Version 2 current2026-09-24 Giray Havur

    The content review of 2026-09-15 recorded the review state. Later changes brought it in line with its family and its text in the verification of 2026-09-15, recorded which sentence of the text each statement rests on and named the license the record itself is published under.

    View JSON-LD Turtle RDF/XML

    8 changes

    • 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 dalicc:LiabilityLimitation "IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, EFFECTS OF UNAUTHORIZED OR MALICIOUS NETWORK ACCESS; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

      Manual edit Library convention 10: the disclaimer paragraph held both the warranty sentence and the liability sentence, which begins 'IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE'. It is split, as the 116 records of the standard-license addition split it.

    • changed dalicc:WarrantyDisclaimer "THIS FREE SOFTWARE IS PROVIDED BY THE AUTHOR \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED."

      was dalicc:WarrantyDisclaimer "THIS FREE SOFTWARE IS PROVIDED BY THE AUTHOR \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, EFFECTS OF UNAUTHORIZED OR MALICIOUS NETWORK ACCESS; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

      Manual edit Library convention 10: the disclaimer paragraph held both the warranty sentence and the liability sentence, which begins 'IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE'. It is split, as the 116 records of the standard-license addition split it.

    • changed permission cc:DerivativeWorks with duties [cc:Attribution, cc:Notice]

      was permission cc:DerivativeWorks with duties [cc:Attribution, cc:Notice]

      Manual edit Its duty cc:Attribution quotes "Redistributions of the Code in binary form must be accompanied by this GPG-signed text in any documentation and, each time the resulting executable program or a program dependent thereon is launched, a prominent display (e.g., splash screen or banner text) of the Author's attribution information, which includes:"

    • changed permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      was permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      Manual edit Its duty cc:Attribution quotes "Redistributions of the Code in binary form must be accompanied by this GPG-signed text in any documentation and, each time the resulting executable program or a program dependent thereon is launched, a prominent display (e.g., splash screen or banner text) of the Author's attribution information, which includes:"

    • changed prohibition dalicc:promote

      was prohibition dalicc:promote

      Manual edit The statement now quotes the sentence of the licence text it rests on: "Neither the name nor any trademark of the Author may be used to endorse or promote products derived from this software without specific prior written permission."

    • 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.

  2. Version 1

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

    View 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.