Can Applications Communicate Over Blockchains?

The author Benedikt Herudek pushes the frontiers of decentralized systems in describing how Turing Machines can communicate over Blockchains.

We will suggest introducing Turing Blockchain Machines, using Blockchains as a Turing Tape. Turing Machines are a simplified yet powerful Model for Computability and the every-day life programs we design and use. We introduce them as a ‘Gedankenexperiment’ on an abstraction of Blockchains as Turing Tapes with specific features to try to answer the question, if applications could communicate over the Blockchain.

This endeavor is connected to the question, how far we can push Software Decentralization and with them human relations and society organized by them? Decentralization is a promise because the Implications of using Technology in the way Bitcoin does, suggest it is possible to defeat large cartel-like organizations, which sit right and accepted in the middle of society.

Technology does have a liberating power if designed right: kicking out ‘middle-’ or ‘highwaymen’ is one of them.

The question raised here (we are not ready to give an answer) is a connected precursor to the vision to endow Blockchains with a ‘Turing Complete Language’. Such Blockchains, foremostly Ethereum aim to have ‘programmable money’ and want to allow decentralizing any application logic, (not ‘just’ money).

The approach suggested here aims to have any kind of signal (not ‘just’ money) exchanged via Blockchains, such that it is clear ‘what it means’. Both approaches have in common to attempt to generalize Bitcoin‘s Blockchain approach.

Ingredients of decentralization

If you purchase a good or a service from someone, who doesn’t happen to be your neighbor or a family member, you typically need these three ingredients.

  1. ‘Money’ and an accepted way to pay, like cash or electronic payment
  2. A common nomenclature as a basis for agreeing what you buy and the seller sells
  3. A governance framework to ensure you get what you ordered, you pay what you received and can dispute if appropriate

One form of trade trading over the Internet, private-public key cryptography and browsers are practically indispensable but taken as a given here. When you want to decentralize trade in this sense you need

Regarding (1): Bitcoin.