The Albion chairman saw the Edinburgh club in whom he has invested beat Celtic 3-1.
The result takes them eight points cl;ear at the top of the table.
Victory will have been a timely tonic for Bloom after the Seagulls lost at Manchester United on Saturday.
All eyes were on Derek McInnes’ Jambos to see if they could handle the growing expectations and pressure of having the opportunity to open up the type of lead never previously enjoyed by any side outside Glasgow during the past four decades of Old Firm dominance.
And Hearts duly delivered with a statement victory over Brendan Rodgers’ injury-hit, misfiring Hoops side.
The hosts took the lead through an early Dane Murray own goal and then overcame the swift concession of an equaliser, scored by Callum McGregor, to claim a jubilantly celebrated victory through goals from Alexandros Kyziridis and Lawrence Shankland early in the second half.
Bloom was shown on Sky Sports in a Nike coat and maroon and white Hearts scarf talking to fans and enjoying the occasion