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.
The Hit Drama Series, Led by Two-Time Emmy(R) And Three-Time Golden Globe(R) Nominee Liev Schreiber, Will Begin Production Next Year. LOS ANGELES, CA  August 11, 2016  On the heels of RAY DONOVAN scoring five Emmy nominations for its third season, SHOWTIME has ordered a fifth season of its hit drama series. Production on season five's 12, one-hour episodes will begin next year.