Commons:Línea de crédito

Shortcut: COM:CREDIT

Línea de crédito o línea de atribución contiene información que el autor del trabajo solicita a todos los usuarios que incluyan con el trabajo, como una condición de uso exigida por la licencia. Las licencias CC-BY y GFDL de uso generalizado Creative Commons requieren que todos los usuarios de la obra atribuyan el autor.

Aunque aquí se utiliza el término "línea de crédito", no es necesario especificar la atribución requerida como una línea de crédito, ni tampoco se especifica el formato de la atribución.

Algunas obras pueden tener instrucciones específicas del autor sobre cómo les gustaría que se atribuyera su trabajo. Esas solicitudes deben cumplirse, siempre que estén dentro de lo requerido por la licencia, y deben cumplirse, si es razonable, de lo contrario. Si el autor no dio instrucciones explícitas, aún debe atribuirse al autor y las formas mínimas y sugeridas de atribución se pueden encontrar a continuación.

Líneas de crédito requeridas por licencia

Creative Commons

CC-BY and CC-BY-SA licenses

According to Creative Commons CC BY and CC BY-SA licenses, reusers must attribute the work by providing a credit line. Section 4b (Section 4c in CC BY-SA 3.0) of full license provides the details. Included below are the most relevant fragments:

If You Distribute [] the Work or any Adaptations or Collections, You must, unless a request has been made [not to], keep intact all copyright notices for the Work and provide, reasonable to the medium or means You are utilizing:

• (i) the name of the Original Author (or pseudonym, if applicable) if supplied, and/or if the Original Author and/or Licensor designate another party or parties (e.g., a sponsor institute, publishing entity, journal) for attribution ("Attribution Parties") in Licensor's copyright notice, terms of service or by other reasonable means, the name of such party or parties;
• (ii) the title of the Work if supplied;
• (iii) to the extent reasonably practicable, the URI, if any, that Licensor specifies to be associated with the Work, unless such URI does not refer to the copyright notice or licensing information for the Work;

In other words, unless author or licensor asks not to be credited, reusers distributing files found at Wikimedia Commons must provide credit line with license and author. Also author might request for credit line to include: other "Attribution Parties" (like Wikimedia Commons), URI (like web pages), or title. Reusers can choose format of the credit line "reasonable to the medium or means" as long as all required components are present. Example Credit lines in minimal format:

License	Author	Source	Credit line	Notes
{{cc-by-sa-3.0}}	John Doe	Own work	John Doe / CC-BY-SA-3.0	Minimum information required by the license for files without explicit Credit line field specified by the author
{{self|cc-by-sa-3.0|GFDL}}	John Doe	Own work	© John Doe / Wikimedia Commons / CC-BY-SA-3.0 / GFDL	Example credit line for dual license file with Wikimedia Commons as extra "Attribution Party"
{{cc-by-sa-3.0}}	User:Example	Own work	© User:Example / Wikimedia Commons / CC-BY-SA-3.0	Example credit line for users who do not provide their real names.
{{cc-by-sa-3.0}}	John Doe	Own work	© John Doe / http://example.com / CC-BY-SA-3.0	Example credit line with external website specified by the author.
{{cc-by-2.5}}	John Doe	Own work	Marble Lady by John Doe / CC-BY-2.5	Example credit line with title specified by the author.

CC-SA licenses

Note that attribution in accordance with best practices may be demanded by law in many European countries (cf "moral rights"), regardless of any general waivers such as CC-SA.

CC-PD licenses

CC Licenses not requiring attributions: {{Cc-zero}}. Please consider using an optional courtesy credit line.

Note that attribution in accordance with best practices may be demanded by law in many European countries (cf "moral rights"), regardless of any general waivers such as CC-zero.

Free Art License

The Free Art Licence considers it vital to announce the image is free and under a copyleft licence, which is linked to (or the URL spelled out in print). This is in addition to information on the author, the title of the work, the date of the work, any other authors contributing to the work and the location of the original work(s). The following format is required:

[Name of the author, title, date of the work. When applicable, names of authors of the common work and, if possible, where to find the originals].

Copyleft: This is a free work, you can copy, distribute, and modify it under the terms of the Free Art License

For example:

"Cherry Blossom Grove on the National Mall" © Vcelloho 2009. From Wikimedia Commons.

Copyleft: This is a free work, you can copy, distribute, and modify it under the terms of the Free Art License

GNU Licenses

License	Author	Source	Credit line	Notes
{{self|cc-by-sa-3.0|GFDL}} {{GFDL|migration=relicense}}	John Doe	Own work	© John Doe / Wikimedia Commons / CC-BY-SA-3.0 / GFDL
{{GFDL}} only (now called {{GFDL|migration=opt-out}}) {{GFDL-1.2}}	John Doe	Own work	Copyright (c) John Doe. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".	You also have to include full text of the license.

Líneas de crédito de cortesía

Public Domain media do not require a credit line or any kind of attribution; however, reusers are encouraged to attribute the author (if known) and inform users that the work was released into the public domain. (Public domain works are not under copyright, and thus should typically avoid the use of the © symbol.) Below are suggested formats for the reusers:

License	Author	Source	Credit line
{{PD-self}} {{PD-author}} {{PD-heirs}}	John Doe	Own work	John Doe / Wikimedia Commons / Public Domain
{{PD-old}}	John Doe	publication / self-scanned	John Doe / Public Domain
{{PD-self}}	Usuario:JohnDoe	I, the copyright holder of this work, hereby publish it under the following license:	Usuario:JohnDoe / Wikimedia Commons / Dominio público
{{anonymous-EU}} {{PD-anon-1923}} {{Anonymous work}}	anonymous	publication	Public Domain
{{PD-textlogo}} {{Trademark}}	Acme Corp	publication	™ Acme Corp

Manejo automático de la atribución por parte de los reutilizadores

API:Imageinfo does offer image license info with iiprop=extmetadata - see for example https://commons.wikimedia.org/w/api.php?action=query&titles=File:Gull%20portrait%20ca%20usa.jpg&prop=imageinfo&iiprop=metadata%7Ccommonmetadata%7Cextmetadata with useful data in Credit and AttributionRequired entries.

Véase también

• Commons:Marcas de derechos de autor
• Commons:Reutilización del contenido fuera de Wikimedia
• Commons:Watermarks

• Attribution requirements for different versions of Cc licenses
• {{credit line}} - template to add credit line to your images