I understand protocols as resolutions of coordination games (as studied by Game Theory). A good introductory book on this subject is “The Art of Strategy: A Game Theorist’s Guide to Success in Business and Life” by Avinash K. Dixit and Barry J. Nalebuff.
The pages below describe the electronic and non-electronic protocols that I use:
Due to the monopoly obtained by coercion of the state courts in the place where I live, I use primarily the Brazilian legal system.
Personally, I do not ratify some laws of the Brazilian legal system because I am not convinced that they are effective...