Proof
“The biggest risk in life is not taking one.”
Where to watch Proof in Portugal
Proof is streaming on SkyShowtime in Portugal, and available to rent or buy on Apple TV Store. Availability checked 24 May 2026.
About Proof
Proof is a 2005 movie in the Drama and Mystery genres, directed by John Madden, starring Gwyneth Paltrow, Anthony Hopkins and Jake Gyllenhaal. It has a runtime of 1 hour 40 minutes. It holds an average rating of 6.4/10 from 736 viewers. Below you can see where to watch Proof in Portugal — across streaming, rental and purchase options — along with the full cast, trailer and viewer reviews.
Overview
Catherine is a woman in her late twenties who is strongly devoted to her father, Robert, a brilliant and well-known mathematician whose grip on reality is beginning to slip away. As Robert descends into madness, Catherine begins to wonder if she may have inherited her father's mental illness along with his mathematical genius.
Top cast
Gwyneth Paltrow
Catherine Llewellyn
Anthony Hopkins
Robert Llewellyn
Jake Gyllenhaal
Harold 'Hal' Dobbs
Hope Davis
Claire Llewellyn
Danny McCarthy
Cop
Tobiasz Daszkiewicz
Limo Driver
Gary Houston
Professor Barrow
Leigh Zimmerman
Friend at Party
Colin Stinton
Theoretical Physicist
Leland Burnett
Band Vocalist
John Keefe
University Friend
Chipo Chung
University Friend
C. Gerod Harris
University Friend
Roshan Seth
Professor Bhandari
Anne Wittman
Friend at Party
Lolly Susi
Airport Check-In Lady
Themes & keywords
Frequently asked questions
Where can I watch Proof in Portugal?+
In Portugal, you can stream Proof on SkyShowtime. It's also available to rent or buy on Apple TV Store.
Is Proof on Netflix?+
Proof is not on Netflix in Portugal right now, but you can stream it on SkyShowtime.
How long is Proof?+
Proof has a runtime of 1 hour 40 minutes (100 minutes).
Who stars in Proof?+
Proof stars Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, Hope Davis and Danny McCarthy.
When did Proof come out?+
Proof is a 2005 movie directed by John Madden.
What genre is Proof?+
Proof is Drama and Mystery film.
Who directed Proof?+
Proof was directed by John Madden.
User reviews
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