Question: On October 15, 2012 Viktor Blom was signed-up by an online poker card room that opened in what year?

Context paragraphs:
Full Tilt Poker: Full Tilt Poker is an Irish online poker card room and online casino that opened in June 2004.  Formerly privately owned by Tiltware, LLC and later by the Rational Entertainment Group, the site was acquired by The Stars Group (then known as Amaya Gaming Group) in a deal where Amaya acquired all of Rational's assets, including PokerStars.  A statement by Amaya said the takeover would not affect the activities of Full Tilt Poker.  The deal was closed on August 1, 2014.

Partypoker: partypoker (formerly stylized PartyPoker) is an online poker card room.  Launched in 2001 by PartyGaming, the site has had up to 80,000 players logged-in and was the largest online card room until 2006.  In 2011 PartyGaming merged with bwin to form Bwin.Party Digital Entertainment.  As of 2017, it remains among the largest online poker card rooms.  The site is endorsed by Mike Sexton, the host of the World Poker Tour television show.  The domain "partypoker.com" attracted at least 3.6 million visitors annually by 2008 according to a Compete.com study.  In 2016, after a protracted bidding process between 888 Holdings and GVC Holdings, Bwin.Party Digital Entertainment accepted GVC Holdings' bid for £1.1 billion.  Today, the site is run by GVC Holdings and is available in 14 different languages.  In addition to partypoker.com, partypoker also offers dedicated networks for French and Italian based players via partypoker.fr and partypoker.it, respectively.  GVC Holdings also acquired Partycasino during the 2011 merger of Party Gaming.

Cardroom: A cardroom or card room is a gaming establishment that exclusively offers card games for play by the public.  The term poker room is used to describe a dedicated room in casinos that is dedicated to playing poker and in function is similar to a card room.

Viktor Blom: Viktor Blom (born 26 September 1990) is a Swedish high-stakes online poker player, best known by the online poker name Isildur1.  His rise to fame drew considerable attention around the poker world in late 2009, when he took part in all ten of the largest pots in online poker history.  In December 2010, it was announced that then-anonymous Isildur1 had joined Team PokerStars Pro.  Blom's identity was revealed by PokerStars on January 8, 2011, at the PokerStars Caribbean Adventure.  Blom parted ways with PokerStars in August 2012 and was quickly signed-up by Full Tilt Poker on October 15, 2012, along with rival high-stakes player Tom Dwan.

PlayWCOOP: The PlayWCOOP (PlayWorld Championship of Online Poker) is a series of poker tournaments taking place every year in online poker room PokerStars.net.  It is dedicated to amateur players and is considered the largest Play Money series of tournaments in the world.  Its creation was based on WCOOP (World Championship of Online Poker), which also occurs in the PokerStars room.  The first edition of PlayWCOOP took place in 2014 and featured 66 events.

Mark Vos: Mark Vos (born 20 October 1983), also known as 'pokerbok', is a professional poker player from Australia.  Vos was born in Cape Town, South Africa, and attended Waldorf High School in Constantia.  He excelled at mathematics olympiads while in high school, and represented his province in the interprovincial olympiad.  Vos permanently deferred his actuarial studies at Macquarie University, to play poker full-time.  Starting out online with limit hold'em in mid-2004, Vos soon turned his attention to no-limit games, and in short time, earned a reputation as being one of the world's top online poker players, such that he can often be found playing in the most expensive cash games and tournaments online.  When not travelling the world playing poker, Vos plans to divide his time between Australia and South Africa.  In January 2006, Vos finished 8th in the main event of the Crown Australian Poker Championship, winning A$83,600.  As of May 2006, Vos represents the Full Tilt Poker online poker cardroom as a friend of Full Tilt Poker.  His name is reflected in red on Full Tilt tables.

Hollywood Park Racetrack: Hollywood Park, later sold and referred to as Betfair Hollywood Park, was a thoroughbred race course located in Inglewood, California, about 3 miles (5 km) from Los Angeles International Airport and adjacent to the Forum indoor arena.  In 1994 Hollywood Park Casino, with a poker card room, was added to the racetrack complex.  Horse racing and training were shut down in December 2013 though the casino operations continued while a new state of the art casino building opened in October 2016.

Cereus Poker Network: Cereus Poker Network was an online poker network comprising Absolute Poker and Ultimate Bet.  The site is now insolvent and not processing player withdrawals.  Cereus is owned by a private company, Blanca Games.  Blanca Games bought all Network assets in August 2010 from Tokwiro Enterprises.  The Cereus network was one of the world's ten largest online poker cardrooms prior to losing the majority of its player base in the wake of the April 15, 2011 online poker indictments.

Brian Hastings (poker player): Brian Hastings (born June 24, 1988) of Hanover Township, Luzerne County, Pennsylvania is an American professional poker player known for his three World Series of Poker bracelets and for his profitable online cash game sessions against the Swedish poker player Viktor Blom, better known by his Online-Poker name Isildur1.

IPoker: iPoker is an online poker card room owned by Playtech currently ranked as the 3rd largest online card room in the world.

Supporting paragraphs: Viktor Blom Full Tilt Poker
Answer: 2004