Contract 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2


Contract Overview

Wrapped Ether
2,413,178.806103946387146374 Ether

$333,621,969.94 (@ $138.25/ETH)

TxHash Block Age From To Value [TxFee]
0x9fffb5affbb77982e8e0526cb0e026abc2113b583565d64ae32fae63203952c4(pending)1 min ago0x5b83259de5e920022844fd25bf39ba1ff22c3552 IN 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc25.1 Ether(Pending)
0xac3535eb95d0737ffb0f4dcf6fd29e88574ad5b2fbdb306dc37f9e297a0d9abf(pending)13 mins ago0xa34cf3d45886a1e4e334b5e79716c2749e21f084 IN 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20 Ether(Pending)
0xed6d021f37665650ea072b305c47091c411530ef49f5ad107e2322ffbcd07a46(pending)18 mins ago0xa34cf3d45886a1e4e334b5e79716c2749e21f084 IN 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20 Ether(Pending)
0x6aeab797c60f469c7924d5446cee6f5618ab76b31162535e2111a1e186800139(pending)27 mins ago0xa34cf3d45886a1e4e334b5e79716c2749e21f084 IN 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20 Ether(Pending)
0xc5bf34be8b773b6058d9fbc352db1e4085b6531de263d98fec69729e28a9e03973982414 mins ago0x81087b801b3b6422598727d2a64166b1efe79d40 IN  Wrapped Ether0 Ether0.000188448
0x89a1f16c14be0682ddd1553ef38813536ae52e801cbe0c15bf59f8d7504fa94b73982366 mins ago0xee8eeec3e7a5ad82827480a9e00d01b1ec0a9f3b IN  Wrapped Ether0.15 Ether0.000170076
0xec4fa25bb55ed168b0760702b2e7f8075684df280af7dd21150497a5db6cc32a73982346 mins ago0x26aad73e874f50a92f57ed10acfa51497d1530fc IN  Wrapped Ether0.012 Ether0.000306141
0x32cc3d4e5ef070c17ced970e4f37870eb57a8ed14b3271a5e99e3ba7cf8030a7739821511 mins ago0xedd34cce5c6d603c7dbcd8211260a6d080a46aa8 IN  Wrapped Ether0 Ether0.0000770448
0xfd91e798aed1bcb5843269a3bfe388e5015d5ab7654b8e154df76dbda8200b2a739820813 mins ago0x4a7b906a2d3f70a3f3fad4f4360183d0e2b1e7ae IN  Wrapped Ether0 Ether0.00011794
0xb49d8ac31f08ce65e8b14ed6e96529d762fe21a1d2525de59b55b3bc645d75fd739818717 mins ago0xc4a654031762e8a791b7e0af41e5e04e6fe31e11 IN  Wrapped Ether0 Ether0.0000670158
0x6b7f9b5dc2a2aa2a2ae17e6578a181ff06b0a9b8aaada14a685a6da1d1ab290b739816221 mins ago0x6efd5dbb3e3c96c4c8bc7376aae263d1c0e7f532 IN  Wrapped Ether0 Ether0.00010908
0x981ae434e381a17f095dd1f35cc3b3123883c857947aa6becfb851bb8844bb42739815124 mins ago0x8f61217f98e9c67f8a5df101d73b1d3ac7d31e01 IN  Wrapped Ether0.0002 Ether0.000226768
0x4f366c967b89bf0127b2cb90a4dcd5c31364e58b353c16a5ab845ce665f6c0f4739814425 mins ago0xb216808718cdeffba3786d3f7591b89b5a7d389b IN  Wrapped Ether0 Ether0.000256816
0x5f87b78ee5f9ca3c3108708a8eb3fa194861fd8f7416d9157b94638f8980c235739813028 mins ago0xcd7397ff05dee590976a1ee7306e8be844da658e IN  Wrapped Ether0 Ether0.000036688
0x8ac619d034c6f549860115ce69d95e3708812271c47bd4440337188f687122c0739811432 mins ago0x37c6b9c961dcf21cef45b8187e17af9d4944cc14 IN  Wrapped Ether0.1 Ether0.000130038
0x7d73d006daba8dbe1e3f065d2987b0b3c5f884abf8496a2a7dd887efb98e6a94739810733 mins ago0x1e8b899d4a04bf81f779165daca1da0ace1c7440 IN  Wrapped Ether0 Ether0.000120256
0x506174e094df07c3334cca517c3802af0185fea6a667ea87e0a1b5bcd0e7a2e0739810633 mins ago0xa34cf3d45886a1e4e334b5e79716c2749e21f084 IN  Wrapped Ether0.05 Ether0.000086692
0xdf6fb169ff3b2907833c9d680357054fd7ca2906b1523f92c8f15d707a7cfa9b739810633 mins ago0x37c6b9c961dcf21cef45b8187e17af9d4944cc14 IN  Wrapped Ether0 Ether0.000141528
0x6377caaa93ca4366e024397288fa902c37f8a6286183fcd5d4890cd1b1333433739810633 mins ago0x9bf00bd9c5bc7a473d1265decfe5bc0a6a942f9f IN  Wrapped Ether0 Ether0.000402864
0x637a0ebdf9fedb9012f1fa7e29677409a95cae65c7f3c3f167c0dfd6ffbaf5a2739810533 mins ago0x1e8b899d4a04bf81f779165daca1da0ace1c7440 IN  Wrapped Ether0 Ether0.000060256
0xa2ff56e57ae993eedc1d31ca86af56c15ee30a8f58c391c4ee06665219831f49739810533 mins ago0x1e8b899d4a04bf81f779165daca1da0ace1c7440 IN  Wrapped Ether0 Ether0.000146752
0xdf6508ab027c380ef4f023fc0b8a83bd1d8acfcda52b2152866f4cbb5f06c249739807440 mins ago0x099d4351f762047cb4b9825515980faac2d75e33 IN  Wrapped Ether0.1455 Ether0.000311806
0xcdf7d9636654b20a98f53e2fc9e4db30eabd218c97933319e510df3579b3625a739805244 mins ago0xc035e2b78f62e47814f08d58973fb7f6c8492257 IN  Wrapped Ether0 Ether0.000094224
0xbb6a83ba923935251a8b36ce3815bf51bad575cabf15f124ea23a52b129311f7739804147 mins ago0x1e8b899d4a04bf81f779165daca1da0ace1c7440 IN  Wrapped Ether0 Ether0.0001719588
0xce9d7c8fa6bfb31c26602a6b2c20406bcb22455510b8eadeb1b24a562cbf91ff739803947 mins ago0xc035e2b78f62e47814f08d58973fb7f6c8492257 IN  Wrapped Ether0 Ether0.000060256
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Latest 25 internal transaction, Click here to view more Internal Transactions as a result of Contract Execution

Parent TxHash Block Age From To Value
0x2799572c2482abd9360b8d28c8dbeb5593252bdc1708f9279a8e64fdd14e712a73982502 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20xc55684d4910660980fef3fcc8d3e0b5a9f33ad101 Ether
0x32cc3d4e5ef070c17ced970e4f37870eb57a8ed14b3271a5e99e3ba7cf8030a7739821511 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20xedd34cce5c6d603c7dbcd8211260a6d080a46aa80.2727351 Ether
0xeabe83d8a3f25ff32e9bff20444baadbc3a2cc2f5867bef25752deddd5121148739820913 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x5468a1dc173652ee28d249c271fa9933144746b10.015534092 Ether
0xeabe83d8a3f25ff32e9bff20444baadbc3a2cc2f5867bef25752deddd5121148739820913 mins ago0x5468a1dc173652ee28d249c271fa9933144746b10xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc21.568943292 Ether
0x6b7f9b5dc2a2aa2a2ae17e6578a181ff06b0a9b8aaada14a685a6da1d1ab290b739816221 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x6efd5dbb3e3c96c4c8bc7376aae263d1c0e7f53245.826671384297481691 Ether
0x445c8f01517c364514b9a3b653f7fa2a5166e667877f7a0dec534117e4e1cb4d739814425 mins ago0x04c112edb180643cc579dfe47a557f832cefda2e0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20.7 Ether
0x4f366c967b89bf0127b2cb90a4dcd5c31364e58b353c16a5ab845ce665f6c0f4739814425 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20xb216808718cdeffba3786d3f7591b89b5a7d389b2.5653411 Ether
0x5f87b78ee5f9ca3c3108708a8eb3fa194861fd8f7416d9157b94638f8980c235739813028 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20xcd7397ff05dee590976a1ee7306e8be844da658e0.1091 Ether
0x140d1d7ae4658a711ed448e923da615acb3f68ae08f8c3e7b03193d1e72295a8739812628 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20xc65727a1f3b6244384a492ada44a3a0315d7b6040.037 Ether
0x6377caaa93ca4366e024397288fa902c37f8a6286183fcd5d4890cd1b1333433739810633 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x9bf00bd9c5bc7a473d1265decfe5bc0a6a942f9f0.8372 Ether
0xa2ff56e57ae993eedc1d31ca86af56c15ee30a8f58c391c4ee06665219831f49739810533 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x1e8b899d4a04bf81f779165daca1da0ace1c74400.1127763 Ether
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0x22ea5d56aa5542cd863c1cf049a57e35d038863ff61321f36a48b735dd178044739804645 mins ago0x4168ed11442000966b515e7246eea24524b8cc2e0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20.5 Ether
0x3f39f2e263f6e53d0f96d01cd059e17f6a2ca4d3010a4c206c0382681a13832e739804147 mins ago0x57f8160e1c59d16c01bbe181fd94db4e56b604950xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc25.959489938117898431 Ether
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Warning: The compiled contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity), NestedArrayFunctionCallDecoder (medium-severity) Solidity Compiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: WETH9
Compiler Version: v0.4.19+commit.c4cbbb05
Optimization Enabled: No
Runs (Optimizer):  200

Contract Source Code
// Copyright (C) 2015, 2016, 2017 Dapphub

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <>.

pragma solidity ^0.4.18;

contract WETH9 {
    string public name     = "Wrapped Ether";
    string public symbol   = "WETH";
    uint8  public decimals = 18;

    event  Approval(address indexed src, address indexed guy, uint wad);
    event  Transfer(address indexed src, address indexed dst, uint wad);
    event  Deposit(address indexed dst, uint wad);
    event  Withdrawal(address indexed src, uint wad);

    mapping (address => uint)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

    function() public payable {
    function deposit() public payable {
        balanceOf[msg.sender] += msg.value;
        Deposit(msg.sender, msg.value);
    function withdraw(uint wad) public {
        require(balanceOf[msg.sender] >= wad);
        balanceOf[msg.sender] -= wad;
        Withdrawal(msg.sender, wad);

    function totalSupply() public view returns (uint) {
        return this.balance;

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        Approval(msg.sender, guy, wad);
        return true;

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);

    function transferFrom(address src, address dst, uint wad)
        returns (bool)
        require(balanceOf[src] >= wad);

        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad);
            allowance[src][msg.sender] -= wad;

        balanceOf[src] -= wad;
        balanceOf[dst] += wad;

        Transfer(src, dst, wad);

        return true;

                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.


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non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.

  You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.

  5. Conveying Modified Source Versions.

  You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.

    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
    7.  This requirement modifies the requirement in section 4 to
    "keep intact all notices".

    c) You must license the entire work, as a whole, under this
    License to anyone who comes into possession of a copy.  This
    License will therefore apply, along with any applicable section 7
    additional terms, to the whole of the work, and all its parts,
    regardless of how they are packaged.  This License gives no
    permission to license the work in any other way, but it does not
    invalidate such permission if you have separately received it.

    d) If the work has interactive user interfaces, each must display
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    work need not make them do so.

  A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit.  Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.

  6. Conveying Non-Source Forms.

  You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:

    a) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by the
    Corresponding Source fixed on a durable physical medium
    customarily used for software interchange.

    b) Convey the object code in, or embodied in, a physical product
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    written offer, valid for at least three years and valid for as
    long as you offer spare parts or customer support for that product
    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
    only if you received the object code with such an offer, in accord
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    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
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    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
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    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
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    charge under subsection 6d.

  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.

  A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling.  In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage.  For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product.  A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
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  "Installation Information" for a User Product means any methods,
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and execute modified versions of a covered work in that User Product from
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code is in no case prevented or interfered with solely because
modification has been made.

  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information.  But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).

  The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed.  Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.

  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.

  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
removal in certain cases when you modify the work.)  You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.

  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:

    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or

    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or

    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
    reasonable ways as different from the original version; or

    d) Limiting the use for publicity purposes of names of licensors or
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    e) Declining to grant rights under trademark law for use of some
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    f) Requiring indemnification of licensors and authors of that
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    those licensors and authors.

  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.

  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.

  8. Termination.

  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).

  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.

  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.

  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.

  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.

  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.


  16. Limitation of Liability.


  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read


Contract ABI

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