I am fascinated by an algorithmic protocol that uses cryptographic hashes & public key cryptography. It rewards participants with another protocol that retains its value called a bitcoin, all for validating a ledger called the blockchain on a peer-to-peer decentralized transparent public network you don't have to trust.
Here is an excellent review of the future of blockchain:
Also a few more information links of my writings on topic for those wanting more:
https://steemit.com/bitcoin/@greenman/nine-trust-based-problems-with-bitcoin-not
I AM THE REVOLUTION and it won't be televised.