Terms of Service

This website is operated by Algoritmo Espacial, Unipessoal Lda., under the brand IQUI.

All artworks presented on this website are original works created by Joana Castro, the artist.

Throughout the site, the terms "we", "us" and "our" refer to Algoritmo Espacial, Unipessoal Lda. as the commercial entity responsible for sales, payments, and fulfillment.

By visiting our site and purchasing from us, you engage in our "Service" and agree to be bound by these Terms of Service ("Terms"), including those additional terms and policies referenced herein and available by hyperlink. These Terms apply to all users of the site, including browsers, customers, and contributors of content.

We reserve the right to update or modify these Terms at any time by posting changes to this page. Your continued use of the site following any updates constitutes acceptance of those changes.

By agreeing to these Terms, you represent that you are at least the age of majority in your country of residence, or that you have the consent of a legal guardian to use this site.

You may not use our products for any unlawful or unauthorized purpose. Any breach of these Terms may result in immediate termination of access.

We reserve the right to refuse service to anyone for any reason at any time.

You understand that your content (not including payment information) may be transferred unencrypted across networks.

Payment information is always encrypted and securely processed through Stripe.

You agree not to reproduce, duplicate, copy, sell or exploit any portion of the Service without written permission.

All artworks listed on this website are original, one-of-a-kind creations by Joana Castro, presented and sold under the IQUI brand.

Each artwork exists as a singular piece and will not be reproduced or reissued in any form.

Gift cards, limited editions and commissioned works may also be offered under the IQUI label.

Colors and textures are represented as accurately as possible, though minor variations may occur due to lighting or display settings.

We reserve the right to limit availability or discontinue any artwork or product at any time.

Prices are listed in Euros (€) and may change without prior notice.

Commissions are available upon request and confirmed in writing.

Each begins with a dialogue about perception, space and light, leading to a singular work created specifically for the collector.

A non-refundable deposit may be required to initiate the process.

Completion timelines are approximate and depend on artistic and material conditions.

All commissioned works remain the intellectual property of the artist, and reproduction rights are not transferred upon purchase.

Payments are securely processed via Stripe, which accepts major credit cards and Apple Pay.

All payments are processed by Algoritmo Espacial, Unipessoal Lda. as the selling entity.

Bank transfers and selected digital payment options, including stablecoins, may be arranged upon request.

All payments must be made in full before the artwork is shipped or the digital certificate released.

Payment information is encrypted and not stored by IQUI.

Original artworks

• Each artwork requires preparation time prior to dispatch. Please allow up to seven (7) business days for packing and handling.
• Shipping is provided at no additional cost.
• International shipping is subject to destination availability and applicable regulations. Delivery to certain locations may be restricted due to legal, carrier, or external constraints.
• Once dispatched, a tracking reference will be provided.
• Studio pickup may be available by appointment.

Gift cards

• Gift cards are physical items associated with a connected digital certificate.
• Shipping for gift cards is included.
• Gift cards may be shipped to the purchaser or directly to a designated recipient.
• Once dispatched, a tracking reference will be provided.
• Studio pickup may be available by appointment.

Customs and import duties

• Shipments outside the European Union may be subject to customs duties, import taxes, or handling fees imposed by local authorities. Any such charges are the responsibility of the recipient.

Returns and Exchanges

• All artworks offered for sale by IQUI are original, one-of-a-kind works.
• Due to their unique nature, returns or exchanges are not accepted after purchase confirmation.
• Customers are responsible for reviewing all available information and contacting us prior to completing a purchase should they require clarification regarding an artwork.

Damaged Works

• If an artwork is received in a damaged condition, the customer must notify us in writing within two (2) business days of delivery.
• The notification must include clear photographic documentation of the artwork and all packaging materials as received.
• All damage claims are assessed on a case-by-case basis. Where damage is confirmed and attributable to shipping or handling, an appropriate resolution will be determined at our discretion.

IQUI gift cards are physical objects associated with a connected digital certificate.

Gift cards are valid for twelve (12) months from the date of receipt, as confirmed by delivery tracking or pickup confirmation.

Each gift card corresponds to a unique 15 × 15 cm hand-painted canvas that carries its assigned value and includes an embedded NFC chip and a connected digital certificate.

Gift cards are available with a minimum value of €200.

Gift cards may be used toward the purchase of any available artwork or commission up to their full value. If the selected piece exceeds the gift card value, the difference may be paid using any accepted payment method.

Shipping for gift cards is included.

Gift cards are non-refundable, cannot be exchanged for cash, and cannot be replaced if lost or expired.

In the event of loss or damage, the associated digital certificate remains the sole valid proof of ownership and balance.

Each original artwork includes a dual-layer authenticity verification system:

Physical Layer

• A signed and dated certificate issued by the artist, and an embedded NFC chip for instant verification via smartphone.

Digital Layer

• A permanent certificate stored on the Solana blockchain providing an immutable record of provenance, ownership, and authenticity.
• The NFC chip links directly to the blockchain certificate, creating a secure connection between the physical artwork and its digital proof of authenticity. The chip can be scanned with any NFC-enabled smartphone without requiring special applications.
• If the NFC chip becomes non-functional, the blockchain certificate and signed physical certificate remain valid as proof of authenticity.

When reselling an artwork, contact IQUI to transfer the blockchain certificate to the new owner. The physical certificate should accompany the artwork. Provenance history is permanently maintained on the blockchain.

All intellectual property rights, including copyright and reproduction rights, remain exclusively with Joana Castro, the artist. Purchasing an artwork grants you ownership of the physical object, the right to display and resell the work, and personal photography for documentation and non-commercial social media sharing with proper attribution. Purchasing does NOT grant you copyright, reproduction rights, permission to create prints or copies in any form, commercial use of the artwork image, or rights to create derivative works or use the image on merchandise, publications, or digital platforms beyond the included certificate. Unauthorized reproduction or commercial use is prohibited without express written permission from the artist.

All website content, including artwork images, photographs, text, design elements, and original written descriptions, is protected by copyright law. The Eigengrau Algorithm, as described and implemented on this website, including its application to artwork identification and the associated methodology, is proprietary. Unauthorized reproduction or commercial use of this system is prohibited.

Each original artwork, gift card, or commissioned piece includes physical and digital identifiers confirming authenticity.

Tampering with or altering any authenticity identifiers is strictly prohibited. This includes removing, damaging, cloning, or attempting to reassign the NFC chip or digital certificate to another work, as well as forging or altering physical certificates.

If you suspect that an artwork has been falsified or altered, immediately contact studio@iqui.art, keep the artwork in a stable environment, and preserve all packaging and documentation. We may assist with verification and, if necessary, initiate an independent authentication process.

Any confirmed case of tampering, counterfeiting, or fraudulent use will void all related certificates and may result in cancellation of sale, refusal of future authentication, or legal action.

While we apply advanced security measures to protect authenticity, we cannot be held liable for third-party misuse, fraudulent replication, or digital fraud beyond our control.

Your submission of personal information through the store is governed by our Privacy Policy.

We collect and process only the data necessary to complete your order and communicate with you.

We comply fully with the General Data Protection Regulation (GDPR) and do not sell or share data with third parties except when required for payment or shipping.

These Terms are effective unless terminated by either party.

We may terminate or suspend access if you fail to comply with these Terms or if fraud, abuse or misuse is suspected.

All obligations incurred prior to termination shall survive termination for all purposes.