You may use and modify Tokenburner
The license permits use, copying, modification, and redistribution for purposes that are not a Competing Use under the license.
License
Source-available now. MIT later.
Tokenburner uses the Functional Source License, Version 1.1, MIT Future License. This page is only a plain-English summary; the repository license is the binding text.
You may not sell a competing product based on it
The restriction is aimed at commercial products or services that substitute for Tokenburner itself.
Each release converts to MIT
Two years after publication, that release receives an MIT future grant.
Grey areas should be asked, not guessed
Commercial use questions can go to legal@tokenburner.net.