Legal notice & privacy
Last updated: September 2026.
Owner
This website (MetalAstra) is owned by Luis Miguel Amblés (Mantiss Works). Contact: mantiss@mantissworks.com.
Purpose
MetalAstra is an informational listing of metal and hard rock gigs in the Barcelona metropolitan area. We don't sell tickets: we link you to each gig's ticket seller.
Affiliate links
Some ticket links include an affiliate identifier. If you buy through them we may receive a commission from the ticket seller, at no extra cost to you and without changing the price.
Personal data
If you create an account we store your email address, username, ratings, attendance marks and comments. Your username, ratings, marks and comments are public; your email is not. We use this data only to make the site work and do not share it with third parties except our database and sign-in provider (Supabase, servers in the European Union). You can delete your account and all your data at any time from your account page. Without an account the site does not store IP addresses and only counts, anonymously, clicks on ticket buttons.
Cookies
We only use technical cookies: one that remembers your language and, if you sign in, the session cookies needed to keep you logged in. We do not use advertising or third-party analytics cookies, which is why we show no consent banner.
Sources
Gig information comes from venue and promoter websites. It may contain errors or last-minute changes: always check the official website before you go. If you are a venue or promoter and want something corrected or removed, write to us.
Contact & your rights
For any question, correction, or to exercise your rights of access, rectification or erasure, write to mantiss@mantissworks.com.