[ImPostingOnHN]

I apologize for my terseness. The private cryptographic key, which is only known to the owner, can be used to sign transactions and such, but it is never directly shared out. Thus, cryptography prevents the retrieval of the key from the outputs.

[SlickNixon]

> which is only known to the owner

If the cryptographic key has actual value (like the ability to access goods and services) what prevents the owner from sharing or selling copies?

[still_grokking]

"hit and sunk"