LICENSE

Business Source License 1.1

Parameters

Licensor:             RA2 Tech SA
Licensed Work:        USDN Protocol. The Licensed Work is (c) 2025 RA2 Tech SA
Additional Use Grant: The following source files are provided under the terms of the MIT License:
                      - the interfaces in `src/interfaces`
                      - the `DoubleEndedQueue` library in `src/libraries`
                      - the `InitializableReentrancyGuard` contract in `src/utils`
					  The files in `src/vendored` are subject to their own licenses, see SPDX-License-Identifier
Change Date:          Four years from the date the Licensed Work is published.
Change License:       GPL-2.0-or-later

License text copyright © 2023 MariaDB plc, All Rights Reserved. “Business Source License” is a trademark of MariaDB plc.

Terms

The Licensor hereby grants you the right to copy, modify, create derivative
works, redistribute, and make non-production use of the Licensed Work. The
Licensor may make an Additional Use Grant, above, permitting limited production
use.

Effective on the Change Date, or the fourth anniversary of the first publicly
available distribution of a specific version of the Licensed Work under this
License, whichever comes first, the Licensor hereby grants you rights under the
terms of the Change License, and the rights granted in the paragraph above
terminate.

If your use of the Licensed Work does not comply with the requirements currently
in effect as described in this License, you must purchase a commercial license
from the Licensor, its affiliated entities, or authorized resellers, or you must
refrain from using the Licensed Work.

All copies of the original and modified Licensed Work, and derivative works of
the Licensed Work, are subject to this License. This License applies separately
for each version of the Licensed Work and the Change Date may vary for each
version of the Licensed Work released by Licensor.

You must conspicuously display this License on each original or modified copy of
the Licensed Work. If you receive the Licensed Work in original or modified form
from a third party, the terms and conditions set forth in this License apply to
your use of that work.

Any use of the Licensed Work in violation of this License will automatically
terminate your rights under this License for the current and all other versions
of the Licensed Work.

This License does not grant you any right in any trademark or logo of Licensor
or its affiliates (provided that you may use a trademark or logo of Licensor as
expressly required by this License).

TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE LICENSED WORK IS PROVIDED ON AN
"AS IS" BASIS. LICENSOR HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS
OR IMPLIED, INCLUDING (WITHOUT LIMITATION) WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND TITLE.