To actually do the blasphemy of blasphemies, you have to have every being in existence hate you forever. This is compoundedly more difficult, as you can always ask for a new heart, which of course will change everything about your trajectory when you seek a heart that will be adored. Now you know what it is.
I would think that it is physically impossible to get the dead to hate you forever
Also blasphemy is a religious word so has zero meaning for me as a non believer