Yes, Triple Crown blackberries are hybrids. The bees that visited your berries were likely on other berries also. There is a chance the seedlings could be very like TC or they could be very different.

If the peppers are too far from the blackberries for berries to have fallen in the peppers, then birds are the next choice.

The seedlings would take an extra year or two to become fruitful, compared to your freebie.

Oh, darn! I was afraid they would be mixed with something else!! I had no idea the seed would germinate so well when dropped! I will dig them all up as have no room or time to see what they will later bear. Will try layering some of the canes as they seem to root very well & get more of the hybrid variety that way.

Thanks so much for saving me some disappointments!