The PayPal SDK is released under the following license:

Copyright (c) 2013-2016 PAYPAL, INC.

SDK LICENSE

NOTICE TO USER: PayPal, Inc. is providing the Software and Documentation for
use under the terms of
this Agreement. Any use, reproduction, modification or distribution of the Software
or Documentation,
or any derivatives or portions hereof, constitutes your acceptance of this Agreement.

As used in this Agreement, "PayPal" means PayPal, Inc. "Software" means the
software code accompanying
this agreement. "Documentation" means the documents, specifications and all
other items accompanying
this Agreement other than the Software.   

1. LICENSE GRANT Subject to the terms of this Agreement, PayPal hereby grants
you a non-exclusive,
worldwide, royalty free license to use, reproduce, prepare derivative works
from, publicly display,
publicly perform, distribute and sublicense the Software for any purpose, provided
the copyright notice
below appears in a conspicuous location within the source code of the distributed
Software and this
license is distributed in the supporting documentation of the Software you distribute.
Furthermore,
you must comply with all third party licenses in order to use the third party
software contained in the
Software.

Subject to the terms of this Agreement, PayPal hereby grants you a non-exclusive,
worldwide, royalty free
license to use, reproduce, publicly display, publicly perform, distribute and
sublicense the Documentation
for any purpose.  You may not modify the Documentation.

No title to the intellectual property in the Software or Documentation is transferred
to you under the
terms of this Agreement. You do not acquire any rights to the Software or the
Documentation except as
expressly set forth in this Agreement.

If you choose to distribute the Software in a commercial product, you do so
with the understanding that
you agree to defend, indemnify and hold harmless PayPal and its suppliers against
any losses, damages and
costs arising from the claims, lawsuits or other legal actions arising out of
such distribution. You may
distribute the Software in object code form under your own license, provided
that your license agreement:

(a) complies with the terms and conditions of this license agreement; 

(b) effectively disclaims all warranties and conditions, express or implied,
on behalf of PayPal;

(c) effectively excludes all liability for damages on behalf of PayPal;

(d) states that any provisions that differ from this Agreement are offered by
you alone and not PayPal; and

(e) states that the Software is available from you or PayPal and informs licensees
how to obtain it in a
reasonable manner on or through a medium customarily used for software exchange.  

2.  DISCLAIMER OF WARRANTY
PAYPAL LICENSES THE SOFTWARE AND DOCUMENTATION TO YOU ONLY ON AN "AS IS" BASIS
WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES
OR CONDITIONS OF TITLE,
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. PAYPAL
MAKES NO WARRANTY THAT THE
SOFTWARE OR DOCUMENTATION WILL BE ERROR-FREE. Each user of the Software or Documentation
is solely responsible
for determining the appropriateness of using and distributing the Software and
Documentation and assumes all
risks associated with its exercise of rights under this Agreement, including
but not limited to the risks and
costs of program errors, compliance with applicable laws, damage to or loss
of data, programs, or equipment,
and unavailability or interruption of operations. Use of the Software and Documentation
is made with the
understanding that PayPal will not provide you with any technical or customer
support or maintenance. Some
states or jurisdictions do not allow the exclusion of implied warranties or
limitations on how long an implied
warranty may last, so the above limitations may not apply to you. To the extent
permissible, any implied
warranties are limited to ninety (90) days.


3.  LIMITATION OF LIABILITY
PAYPAL AND ITS SUPPLIERS SHALL NOT BE LIABLE FOR LOSS OR DAMAGE ARISING OUT
OF THIS AGREEMENT OR FROM THE USE
OF THE SOFTWARE OR DOCUMENTATION. IN NO EVENT WILL PAYPAL OR ITS SUPPLIERS BE
LIABLE TO YOU OR ANY THIRD PARTY
FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES INCLUDING
LOST PROFITS, LOST SAVINGS,
COSTS, FEES, OR EXPENSES OF ANY KIND ARISING OUT OF ANY PROVISION OF THIS AGREEMENT
OR THE USE OR THE INABILITY
TO USE THE SOFTWARE OR DOCUMENTATION, HOWEVER CAUSED AND UNDER ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES.
PAYPAL'S AGGREGATE LIABILITY AND THAT OF ITS SUPPLIERS UNDER OR IN CONNECTION
WITH THIS AGREEMENT SHALL BE
LIMITED TO THE AMOUNT PAID BY YOU FOR THE SOFTWARE AND DOCUMENTATION. 

4.  TRADEMARK USAGE
PayPal is a trademark PayPal, Inc. in the United States and other countries.
Such trademarks may not be used
to endorse or promote any product unless expressly permitted under separate
agreement with PayPal.

5.  TERM
Your rights under this Agreement shall terminate if you fail to comply with
any of the material terms or
conditions of this Agreement and do not cure such failure in a reasonable period
of time after becoming
aware of such noncompliance. If all your rights under this Agreement terminate,
you agree to cease use
and distribution of the Software and Documentation as soon as reasonably practicable.

6. GOVERNING LAW AND JURISDICTION. This Agreement is governed by the statutes
and laws of the State of
California, without regard to the conflicts of law principles thereof. If any
part of this Agreement is
found void and unenforceable, it will not affect the validity of the balance
of the Agreement, which shall
remain valid and enforceable according to its terms. Any dispute arising out
of or related to this Agreement
shall be brought in the courts of Santa Clara County, California, USA.