Physical cash transactions are final
  But in the digital world non-reversible
      Transactions have not been possible
        Since financial institutions cannot avoid
            Mediating disputes which prevent finality
              The cost of mediation slows enterprise
                  And makes trade and finance complex
                    Therefore
                  We need an electronic payment system
              Based on cryptographic proof, not trust
            Allowing any two parties to transact directly
        With irreversible transactions based on a
      Distributed timestamp server to generate
  Proof of the chronology of the transactions
And thus finality. The solution is Bitcoin