You may
Use, copy, modify, sublicense, distribute. Commercial or non-commercial. With or without source. Forever.
§ License · /license
Apache 2.0.
Every Adamant repository — protocol spec, reference node, reference wallet, this website — ships under Apache 2.0.
You must
Preserve the copyright notice. State changes. Include the NOTICE file if there is one. License derivative work under terms compatible with Apache 2.0.
You don't
Receive any warranty. There is no liability. The patent grant is limited to contributions; deliberate patent litigation revokes your patent license.