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.

27 guides

How to read a condition report for a work of art

Vocabulary for a condition report, an annotated example, and the indicators that necessitate a second opinion before purchasing, lending, or insuring a work of art.

Reviewed on 7 November 2026
- art collecting
- artwork documentation
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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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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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Commissioning an artwork

Commissioning an artwork, or accepting a commission, works best with a written agreement. What it should say about the work, deadlines, price, changes and rights.

Verified on 1 October 2026
- art collecting
- copyright
- artwork documentation
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How OBJKT works: publishing, buying and preserving digital art on Tezos

What happens when a work is tokenised on OBJKT, what the buyer receives, how editions and royalties work and what you need to keep outside the platform.

Reviewed on 27 September 2026
- art collecting
- digital infrastructure
- art market
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Authorship and works made with AI under Spanish law

What Spanish law says about the authorship of works made with AI, where the line of human contribution lies and what to document in practice.

Verified on 27 September 2026
- art collecting
- generative AI
- ontology of art
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