However, since this document has no legal validity, because it has not been registered, it most often serves as proof of payment and not as a legally valid document that could be presented to the courts in the event of a dispute. The buyer and seller only enter into a registered contract if the buyer pays at least 10% of the commercial value and a master-buyer contract or a sales contract is signed between the two parties. A SAFT is different from a Simple Agreement for Future Equity (SAFE) that allows investors who invest money in a startup to later turn that share into equity. Developers use funds from the sale of SAFT to develop the network and technology needed to create a functional token, and then make those tokens available to investors expecting there to be a market where these tokens can be sold. .