LEXINGTON, Ky. - Cryptoclearance, a Grade 1-winning millionaire and sire of champion Victory Gallop and Breeders' Cup Classic winner Volponi, has died of a heart attack at age 25.\nThe stallion, who was still on the Margaux Farm breeding roster, died Thursday at Rood and Riddle Equine Hospital. A Margaux release said the heart attack stemmed from complications following colic surgery.\nTrained by Scotty Schulhofer for Phil Teinowitz, Cryptoclearance won nine stakes, headed by four Grade 1 events: the 1987 Florida Derby and Pegasus Handicaps and the 1989 Donn and Widener Handicaps. He finished no worse than fourth in 20 others, including 12 Grade 1 races. Those finishes included seconds in the 1987 Belmont and Travers Stakes, a third in the Preakness, and a fourth in the Kentucky Derby.\nIn total, Cryptoclearance won 12 of 44 career starts, with 10 second and seven thirds. He earned $3,376,327.\nThomas Whitney bred Cryptoclearance in the name of George G. Farm. The Fappiano horse was out of Whitney's Hoist the Flag winner Naval Orange and was his dam's only stakes winner. Teinowitz bought Cryptoclearance for $190,000 at the 1985 Keeneland September yearling sale.\nAs a sire, Cryptoclearance sired 1999 champion older male Victory Gallop, Canadian champion 3-year-old Cryptocloser, 2002 Breeders' Cup Classic winner Volponi, and Dominican champion imported 3-year-old filly Little Emely. He also is the sire of such Grade 1 winners as Millennium Wind, Strategic Maneuver, and Traitor.\n"He was a breed-shaping horse, and his influence will be passed down over the years not only through his sons, but, very significantly, through his daughters," Margaux manager Steve Johnson said. "His contribution to the breed is that of soundness, stamina, and, above all else, heart - traits that he and his offspring have displayed in the races that define class in our breed."\nCryptoclearance stood for $5,000 and bred 25 mares in 2009.\nHe will be buried at Margaux Farm in Midway, Ky.