I am building or managing an art collection

For anyone buying, documenting, conserving, lending, selling or transferring artworks who wants to understand their provenance, condition, rights and circulation requirements.

The guides are currently searched and indexed in Spanish.

19 guides

Why a gallery asks you to identify yourself when purchasing an artwork

What obliges galleries and auction houses to identify their clients, what data they may request, and how long they retain it.

Reviewed on 7 November 2026
- art collecting
- art market
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Buying art at auction: estimation, commission, and delivery

Understanding estimates, additional costs beyond the hammer price, VAT application and essential checks before bidding at an art auction.

Reviewed on 7 November 2026
- art collecting
- art market
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How to sell a work from your collection

Gallery, auction, direct sale, or platform: how to sell a collection piece, what documents will be requested, and how the gain is taxed.

Reviewed on 7 November 2026
- art collecting
- art market
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Valuing a work of art for insurance, inheritance or donation

Una misma obra puede tener valores distintos según la finalidad. Quién puede tasarla, qué debe contener el informe y qué cambia entre seguro, herencia y donación.

Reviewed on 20 October 2026
- collections
- taxation
- art market
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How to certify a digital artwork and its editions

What a digital work certificate must encompass: identification of the work and its files, edition characteristics, assigned rights, migration rules, and the rationale for a token…

Verified on 17 October 2026
- digital art
- artwork documentation
- art market
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Selling a painting is not selling its rights

Why buying a work does not transfer its exploitation rights, what the law allows the owner of the copy to do and what a contract should specify when the artist authorises a use.

Verified on 27 September 2026
- art collecting
- copyright
- art market
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Technical data sheet, certificate and invoice: what each document does

What the technical data sheet, the certificate of authenticity and the invoice each do when a work leaves the studio, and how to keep them consistent.

Reviewed on 27 September 2026
- art collecting
- art market
- cultural work
Includes a downloadable resource

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Buying digital art: files, rights, certificates and preservation

Qué puede recibir quien compra una obra digital: archivos, soporte, acceso, certificado, mantenimiento y licencia, con o sin token.

Verified on 18 October 2026
- digital art
- art collecting
- copyright
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Catalogue raisonné: what it is and how to start your own

An explanation of what a catalogue raisonné entails, its distinction from the authentication of a work, the methodology for commencing your own, and the policies required for the receipt and examination of works.

Verified on 20 October 2026
- archivo
- catalogación
- art collecting
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