Let me rephrase the picture...

Black hole:
"A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.
The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole."

Bitcoin:
"A Bitcoin is a cryptocurrency of the world where gravity is so strong that nothing—paper money or even governments such as Central Banks—can escape from it.
The theory of cryptocurrency predicts that a sufficiently compact mass (21million coins) can decentralize governments to form a new world."