Proof

Name: Proof
Genre: Drama, Mystery
Released: 2005-09-05
Duration: 1 h 40 min
Rating: 6.3
Cast: Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, Hope Davis, Danny McCarthy

2005·Movie·PG-13·100 min·★ 6.3(745)

Drama Mystery More English titles

“The biggest risk in life is not taking one.”

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.

Where to watch Proof in United States

Can I watch Proof in United States? Yes — you can stream Proof in United States on Kanopy, Hoopla, and YouTube Free, or rent and buy it on JustWatch TV and Amazon Video.

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Click a service to open Proof there. Availability last verified on July 31, 2026.

Where is Proof streaming around the world?

Country	Streaming on	Rent / Buy
United States	Kanopy, Hoopla, YouTube Free	JustWatch TV, Amazon Video, Apple TV Store
India	—	Apple TV Store, Amazon Video
United Kingdom	—	JustWatch TV, Apple TV Store, Amazon Video
Canada	Hollywood Suite, Hollywood Suite Amazon Channel	Google Play Movies, YouTube
Australia	—	JustWatch TV, Apple TV Store, Amazon Video
Germany	Joyn, Netzkino	Amazon Video, Sky Store, maxdome Store
France	—	Amazon Video
Spain	—	Rakuten TV, Amazon Video
Brazil	—	Apple TV Store, Amazon Video
Japan	—	Amazon Video, FOD

About Proof

Proof is a 2005 English-language drama and mystery film directed by John Madden. The cast is led by Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal. It has a runtime of 1h 40m. Viewers rate it 6.3/10 across 700 ratings. In United States, it is currently streaming on Kanopy, Hoopla, YouTube Free.

Proof was produced by Miramax, Endgame Entertainment, and Hart-Sharp Entertainment and made in United States of America. It was released on September 5, 2005, and carries a PG-13 certification. Made on a budget of about $20 million, it went on to gross $8 million worldwide.

Director: John Madden
Writers: Rebecca Miller, David Auburn
Release date: September 5, 2005
Original language: English
Age rating: PG-13
Status: Released
Country: United States of America
Budget: $20 million
Box office: $8 million
Production: Miramax, Endgame Entertainment, Hart-Sharp Entertainment

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Proof cast & crew

Proof was directed by John Madden and written by Rebecca Miller and David Auburn.

The cast features Gwyneth Paltrow as Catherine Llewellyn, Anthony Hopkins as Robert Llewellyn, Jake Gyllenhaal as Harold 'Hal' Dobbs, Hope Davis as Claire Llewellyn, Danny McCarthy as Cop, and Tobiasz Daszkiewicz as Limo Driver.

Behind the camera, the score was composed by Stephen Warbeck, cinematography is by Alwin H. Küchler, and it was produced by Bob Weinstein and Alison Owen.

Is Proof worth watching?

Proof holds an audience score of 6.3/10 from 745 ratings, a solidly received drama films.

At 1h 40m, it's an easy, time-light watch.

If you enjoy drama and mystery, Proof is worth a place on your watchlist.

How and where to watch Proof

In United States, you can stream Proof on Kanopy, Hoopla, and YouTube Free, or rent and buy it on JustWatch TV, Amazon Video, Apple TV Store, and Google Play Movies. Click any service above to open it directly.

Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.