Definition of checksum. : a sum derived from the bits of a segment of computer data that is calculated before and after transmission or storage to assure that the data is free from errors or tampering.
The production of season 4 is scheduled to start June 20, 2016, thus we wonât see anything from the new season this year. The Ray Donovan project was awarded by a great name from the Showtime president, who called their top show as the channelâs signature series.
Nothing to fix here, Mr. Ray Donovan. You are here to stay. Showtime has renewed the Liev Schreiber-led drama Ray Donovan for a second season, the network announced today.  Ray Donovan is on track to be our biggest season one show ever, David Nevins, president of entertainment said in a statement.ts debut even surpassed the premiere episode of Showtime's critically acclaimed Homeland by 61 percent. The series is also the first freshman drama in Showtime history to improve on its series premiere numbers, bringing in a 15 percent gain in its second week. Ray Donovan 's second season is slated for a 2014 release.