P1. For something to have value, it must be tangible. P2. Bitcoin is not tangible. Therefore: C3. Bitcoin can not have value.
P1. Disagree. There are many examples of intangible things that have value: love, freedom, friendship, power, memories, promises, and even "the satisfaction of being right." Those are things we live and die for (and often kill for), so clearly, intangible things can have value.
P2. Agree. Bitcoin is not tangible.
C3. Disagree. Bitcoin can have value.