Terms and Conditions
Terms and Conditions of Use and Sale
These general terms govern the use of the stelvia.space service — Stelvia's wall of signatures: user accounts, free signatures on stars and their publication — and the purchase of the only paid product, the lock, in accordance with Spanish Royal Legislative Decree 1/2007 (TRLGDCU), Royal Decree-Law 7/2021, the Spanish Civil Code and Law 34/2002 (LSSI-CE).
1. Identity of the provider
Service provider and seller: Rubén Jarne Cabañero (trade name: Stelvia). Tax ID: 77217706J. Registered address: Calle del Canal 9, 50007 Zaragoza (España). Contact email: hello@stelvia.space. Registry details: not applicable (sole trader). Trade name: Stelvia.
2. Symbolic nature of the service
Stelvia is an online service that lets you publicly associate a chosen name and a message (the “signature”) with a real star identified by its astronomical catalogue (Hipparcos) and coordinates, view it on a 3D sky map and in augmented reality and, optionally, purchase the “lock”, a digital product that makes that association permanent and includes a digital certificate and a personalised narrated video. THE ENTIRE SERVICE IS SYMBOLIC. Neither the free signature nor the lock confers any right of ownership, use or exploitation over any star or celestial body; the chosen name is not recognised by the International Astronomical Union (IAU) or any other scientific or official authority, and it produces effects only within the Stelvia platform, as a private act of sentimental and commemorative value (the “symbolic reservation”).
3. The free service: the signature and the substitution of the symbolic reservation
3.1 Free signature. Anyone with a verified account (clause 4) may claim ONE star from the catalogue free of charge and attach their signature to it: a chosen name (maximum 60 characters) and a message (maximum 500 characters), publicly visible on the sky map, in augmented reality, on the star's page and in the search. The signature does not expire with the passage of time. Each account may hold at most one active free signature: claiming another star means giving up the previous one, subject to confirmation. 3.2 Substitution of the symbolic reservation. As long as a signature is not protected by the lock, any other user may claim the same star at any time, and their signature will replace the previous one. The replaced signature stops being publicly displayed at that moment and is kept in the private history of its author's account; the author receives an email notice (which can be turned off in the account) and may sign the same or another star again, or protect their signature with the lock. The possibility of substitution is an essential, deliberate and accepted feature of the free service and does not give rise to any right to compensation or indemnity. 3.3 The lock (only paid product). For €9.90 (VAT included; final, all-inclusive price; also available in US dollars at the price shown before payment) the current signer may secure their own signature: the symbolic reservation becomes permanent vis-à-vis other users — no other signature will be able to replace it — and it additionally includes a downloadable digital certificate, a personalised narrated video and the visual distinction of the signature on the map. The lock can only be purchased for one's own active signature. Securing a signature frees up the account's free-signature slot. 3.4 Scope of permanence. The permanence provided by the lock operates vis-à-vis other users and within the platform; it does not prevent removal of the message through moderation (clause 5) or deletion of the account by its holder (clause 4.4), nor does it alter the symbolic nature described in clause 2. If the payment for the lock is refunded or reversed (chargeback), the symbolic reservation ceases to be permanent and becomes replaceable again. 3.5 Concurrency. If, between the start of the lock payment and its confirmation, the payer's signature has been replaced by another user's, the confirmation of the payment restores and secures the payer's signature; the replacing signature moves to the private history of its author, who recovers their free-signature slot and is informed by email. If two lock payments are confirmed for the same star, the first prevails and the second is refunded in full automatically.
4. User accounts
4.1 Registration. Using the signature service requires a free account with a verified email address. Without verification it is not possible to sign, replace a signature or purchase the lock. 4.2 Minimum age. Registration is reserved for people aged 14 or over (art. 7 of the Spanish LOPDGDD). By registering you declare that you meet this requirement. 4.3 Personal nature. The account is personal and non-transferable. Signatures and symbolic reservations — free or with a lock — are linked to the account that created them and may not be transferred, sold or assigned to another account or to third parties. 4.4 Account deletion. You may delete your account at any time from within the account. Deletion entails: (a) removal of your active free signature, its star becoming free; (b) removal of your locked signatures, including their message, certificate and video, their stars becoming free, with no right to a refund — the permanence service is provided vis-à-vis third parties while the account exists, and deletion is a free decision of its holder; files you have already downloaded remain yours; (c) erasure of your private signature history; and (d) retention of order data in anonymised form for the legally required tax periods (see privacy policy). [PENDIENTE: validación por abogado colegiado de los efectos de la supresión, en particular la ausencia de reembolso]
5. User-published content (public signatures)
5.1 Publication licence. Users retain the rights to the content of their signature. By publishing it, the user grants Stelvia a worldwide, royalty-free, non-exclusive licence to host, reproduce and publicly display it on the service's surfaces (sky map, augmented reality, star page and search) and in the materials the service itself generates for the user (the lock's certificate and video), for as long as the signature is active. The licence ends when the signature ceases to be active due to substitution, waiver or account deletion, without prejudice to transient technical copies. 5.2 Prohibited content. It is not permitted to publish content that is illegal; defamatory or harmful to honour, privacy or personal image; personal data of third parties without a legitimate basis; threats; hate content; URLs, spam or commercial content; or impersonation. The system automatically blocks certain patterns before publication (URLs, explicit threats, identity documents and phone numbers). 5.3 Reporting and precautionary hiding. Any visitor may report a signature by stating a reason, with no account needed. A reported signature is precautionarily hidden from public surfaces (“pending review”) until it is reviewed. After review, the signature is reinstated or its message is permanently removed. Precautionary hiding does not alter the symbolic reservation or its rules (clause 3). 5.4 Removal and rewriting. If the message of a locked signature is removed for breaching these terms, the symbolic reservation remains — the star stays secured for that account — and its holder may write a new message, subject to the same rules. If the message of a free signature is removed, the star becomes free. 5.5 No refund for moderation. Removal or hiding of a message under this clause does not entitle the user to a refund of the lock: the lock secures the permanence of the symbolic reservation, not the right to keep published content that breaches these terms. [PENDIENTE: validación por abogado colegiado — calificación de esta cláusula en derecho de consumo] 5.6 Editing. Holders may edit the message of their signature at any time; every edit is subject to the same filters and rules. For locked signatures, the certificate and the video are not regenerated: they reflect the content at the time of purchase.
6. Mention of third parties in signatures (clause “4bis”)
6.1 The signer is solely responsible for the content of their signature, which is published on Stelvia's public surfaces and may appear, if they purchase the lock, in their certificate and video. The signer declares and warrants that: (a) they have the right to mention or refer to the people appearing in their signature, either because it is themselves, because they have their consent, or because the reference is made in the context of a tribute or affectionate evocation that does not harm the rights of the person mentioned; (b) the content does not infringe the honour, privacy or image of third parties (Spanish Organic Law 1/1982), does not contain sensitive personal data, is not defamatory, does not infringe third-party intellectual property rights and does not involve non-consented disclosure of third parties' personal data (GDPR/LOPDGDD); and (c) if they mention personal data of another person, they have obtained or hold a legitimate basis to do so, assuming liability towards that person and towards any supervisory authority. 6.2 Indemnity. The signer undertakes to hold Stelvia, its partners, employees and collaborators harmless from any claim, damage, fine, cost or expense (including reasonable legal fees) arising from a breach of the warranties in clause 6.1. 6.3 Rights of the mentioned third party. Any person mentioned in a public signature who considers their rights infringed may request the removal or anonymisation of their name through the report button (reason “personal data”) or by writing to hello@stelvia.space. Stelvia will handle the request within a maximum of 72 hours, assessing the legal basis for removal under the GDPR (arts. 17 and 21) or Organic Law 1/1982. 6.4 Moderation. Stelvia retains the right to remove or hide any signature which, in its reasonable judgement, is contrary to the law, harmful to third parties or incompatible with these terms, in accordance with clause 5. [PENDIENTE: validación por abogado colegiado — en particular la base jurídica de la publicación de datos de terceros y su reflejo en la política de privacidad]
7. Purchasing the lock and pre-contractual information
Before the lock payment is confirmed, the system shows the consumer: the essential description of the product and its symbolic nature, the total price including taxes, the immediate performance and its consequences for the right of withdrawal (clause 8), the payment method and the complaints procedure. The purchase is made by pressing a button with the express indication “order with obligation to pay” or equivalent, and is concluded when we send the confirmation to the account's email address. This complies with article 97 TRLGDCU. Payment is processed through Stripe in euros (EUR) or US dollars (USD), with taxes calculated according to the buyer's territory.
8. Right of withdrawal
EXCLUSION DUE TO IMMEDIATE PERFORMANCE OF DIGITAL CONTENT AND SERVICES (art. 103.m TRLGDCU) The lock is an entirely digital product whose performance begins immediately and automatically upon confirmation of payment: the permanence of the symbolic reservation takes effect at that very moment, and the digital certificate and narrated video are generated and delivered immediately afterwards. Before paying, the buyer gives their express consent through the checkbox provided in the purchase flow and acknowledges having been informed that, by authorising immediate performance, they lose their right of withdrawal, in accordance with article 103.m TRLGDCU. Consequently, the right of withdrawal under article 102 TRLGDCU does not apply to the lock once payment is confirmed. REINFORCEMENT DUE TO PERSONALISATION (art. 103.c TRLGDCU) In addition, the certificate and the video incorporate the name and message written by the buyer, and therefore constitute clearly personalised content made to the buyer's specifications within the meaning of article 103.c TRLGDCU. PRIOR INFORMATION This exclusion is communicated before payment is confirmed, in the legal information block of the lock purchase flow and in these terms. It does not affect the consumer's rights arising from lack of conformity (statutory warranty, arts. 114 et seq. TRLGDCU) or the refunds the service itself provides of its own motion (clause 3.5). [PENDIENTE: validación por abogado colegiado antes de operar]
9. Delivery and performance
Performance of the lock is immediate: the signature is secured at the moment the payment is confirmed. The digital certificate and the narrated video are generated automatically after payment and delivered by email and through the user's account, normally within minutes. Stelvia does not currently sell physical products or make postal shipments. If a technical problem prevents the generation or delivery of the certificate or the video, we will fix it and resend it at no additional cost; if performance turns out to be definitively impossible, the full amount will be refunded.
10. Statutory warranty of conformity
As a consumer you benefit from the statutory warranty of conformity for the digital content and services supplied (arts. 114 et seq. and 115 ter TRLGDCU, as worded by Royal Decree-Law 7/2021). If the lock, the certificate or the video are not in conformity (for example, a certificate with incorrect data or a defective video), you may demand that they be brought into conformity (correction or regeneration), a price reduction or termination of the contract, under the terms provided by law.
11. Refunds
The lock cannot be returned by withdrawal (clause 8). A full refund, through the same payment method and at no additional cost, applies: (a) automatically, when two lock payments are confirmed for the same star (clause 3.5: the first prevails); (b) when performance turns out to be definitively impossible (clause 9); and (c) where applicable under the statutory warranty of conformity (clause 10). The substitution of a free signature does not give rise to any refund or compensation (nothing was paid for it). After a lock is refunded or charged back, the symbolic reservation ceases to be permanent (clause 3.4).
12. Changes to these terms
Stelvia reserves the right to modify these terms to adapt them to regulatory, technical or service changes. Modifications will not apply retroactively to locks already purchased. Continued use of the free service and new purchases will be governed by the terms in force at any given time; substantial changes will be notified by email to registered accounts.
13. Customer support
For enquiries or complaints you can write to hello@stelvia.space. We undertake to reply within a maximum of 7 working days. Filing a complaint does not prevent you from pursuing the applicable administrative or judicial channels.
14. Dispute resolution
The European online dispute resolution platform created by Regulation (EU) 524/2013 was discontinued by Regulation (EU) 2024/3228, with effect from 20 July 2025, and is no longer available. In the event of any dispute, we invite you to contact us first to seek an amicable solution; you may also turn to consumer information offices, the Spanish Consumer Arbitration System or the applicable administrative and judicial channels. [PENDIENTE: validación por abogado colegiado]
15. Applicable law and jurisdiction
The contract is governed by Spanish law. For disputes arising from the relationship with consumers resident in Spain, the courts of the consumer's domicile have jurisdiction (art. 90.2 TRLGDCU). For consumers resident in other European Union Member States, the mandatory consumer protection rules of their place of habitual residence apply in accordance with Regulation (EU) 1215/2012 and Regulation (EC) 593/2008 (Rome I).