Latest 25 txns From a total of 4576 Transactions

TxHash Age From To Value [TxFee]
0xbba576356ba23571f3d06caae5aff402eb82341a0004befcea41532adf118cb71 hr 57 mins ago0x2624d45ca77c065999d2328b3e8f2d7bc53a5779  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.0000556896
0x2e358c1deeb32a67e16cda31309e7d966abc630d8186927426cddfef9610b9c82 hrs 22 mins ago0x7d8e6cfb1b8709139631cac4cc458f63611ffdf8  IN   0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether0.000346768
0x9ae8a112ec1a002439fc0aa51bdef2e4a510618ae378361953f62d7f35a192c22 hrs 23 mins ago0x7d8e6cfb1b8709139631cac4cc458f63611ffdf8  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000377408
0x030305781f7a37e3f5b3d60f54e3e9fbcf438eb939b8dc308791cd61fdee4fda8 hrs 16 mins ago0x7954707b6ffe1b602e497edbbb39546c4a744f34  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000031088
0xc82ed135fdf77978a6ddd9f4ffa219c4b66dbcf5dc6f3b1370c2144943b2d2578 hrs 34 mins ago0x7954707b6ffe1b602e497edbbb39546c4a744f34  IN   0xc778417e063141139fce010982780140aa0cd5ab1 Ether0.000028346
0xd697481d90c3baba434588513a0428b3ec3ee57553bbaa7563f61c102dd7bfe28 hrs 58 mins ago0xfc9ba488581d765fd037035010b11c79f81ea2e0  IN   0xc778417e063141139fce010982780140aa0cd5ab1 Ether0.000396844
0x8348aafd17c5616a022f03574018b5a037220728740097972c89c643b9c98d0b8 hrs 58 mins ago0xfc9ba488581d765fd037035010b11c79f81ea2e0  IN   0xc778417e063141139fce010982780140aa0cd5ab1 Ether0.000396844
0xabad100c1890a1420e7e296ea627719d12a8495de15525d01bdd3d372321011c8 hrs 59 mins ago0xfc9ba488581d765fd037035010b11c79f81ea2e0  IN   0xc778417e063141139fce010982780140aa0cd5ab1 Ether0.000606844
0x78ad61d749cd4906205a85638641dd4d62a44bed6691b58d50394f05246df14f9 hrs 9 mins ago0x0693c8e13eff3be2d9261997cb21fe1914d88e48  IN   0xc778417e063141139fce010982780140aa0cd5ab4 Ether0.000028346
0x6ede07a3636b4d84a1dad8bd978378a01bf707629b9bddcd82263c7e255533cd9 hrs 18 mins ago0x37a09fa7afbbb48537bf94d5609d3e2fe04fa791  IN   0xc778417e063141139fce010982780140aa0cd5ab10 Ether0.000028346
0xab7fb79a4c1740a129c0a508306b7e52a2fc1c42f8384e123c4b2073fbd1013413 hrs 23 mins ago0x7954707b6ffe1b602e497edbbb39546c4a744f34  IN   0xc778417e063141139fce010982780140aa0cd5ab6 Ether0.000028346
0xe45e3f8067dac2dbb62af3fe26ec2479385d5a901b57abebcda47d2f3d1e973b13 hrs 26 mins ago0x7954707b6ffe1b602e497edbbb39546c4a744f34  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000036624
0xe927626684b3a89fe4bcf5dd6f6217f578cd89a1012cb485ff5cd60a43bdb87618 hrs 17 mins ago0xb4124ceb3451635dacedd11767f004d8a28c6ee7  IN   0xc778417e063141139fce010982780140aa0cd5ab0.5 Ether0.000043346
0xadf6f5affada041edf6face319bcf8ffdc628ce3b0b137d5ef6883377589dd5c20 hrs 31 mins ago0x6ecbe1db9ef729cbe972c83fb886247691fb6beb  IN   0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether0.000028346
0x92f20a6e051f3eef70b0474e17126cb1458999c47eca0a858734342c2ef04f0d20 hrs 31 mins ago0x6ecbe1db9ef729cbe972c83fb886247691fb6beb  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000047176
0xe3842692989d81ae42d5ed80c09667829a692a4eddc2874b68d528370aa23ddd1 day 4 hrs ago0x0006e4548aed4502ec8c844567840ce6ef1013f5  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000174016
0xa792d0188b0e0d11a3531bf567628e32130328450bd43a5d5799ec1b85140f571 day 7 hrs ago0xb819706e897eacf235cdb5048962bd65873202c4  IN   0xc778417e063141139fce010982780140aa0cd5ab0.002 Ether0.000226768
0xba5c8e3969b2e4ab0b37788e391e14a9a790ca535175b306043c1db5b8091ab21 day 7 hrs ago0xb819706e897eacf235cdb5048962bd65873202c4  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.00029248
0x0af7a31384c21e085a229ec955507c2348a960a0a5f28bdd740e69eb4ea907c61 day 7 hrs ago0xb819706e897eacf235cdb5048962bd65873202c4  IN   0xc778417e063141139fce010982780140aa0cd5ab0.002 Ether0.000226768
0x8d4c6f9e081ec19f5a690ce512c7afabe2b47aafa1b5d7fe20bf2c888d5e3eda1 day 7 hrs ago0xb819706e897eacf235cdb5048962bd65873202c4  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.00029248
0x3515632c334692bdd18a0fff13fa8b18b06a13d743b7868e7b3d8245e4100c771 day 7 hrs ago0xb819706e897eacf235cdb5048962bd65873202c4  IN   0xc778417e063141139fce010982780140aa0cd5ab0.002 Ether0.000226768
0x04b8bf7d1be936a9eef6b3e1056fefe022a5aee0580fc36d2a1c27771290addb1 day 8 hrs ago0xf4ac6663458607da45a06f144322b5827afab46f  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000566112
0xca1735b746fa96640c5b21a4e0006250eb717bbac0dc702524714feb9d1d9eac1 day 8 hrs ago0xf4ac6663458607da45a06f144322b5827afab46f  IN   0xc778417e063141139fce010982780140aa0cd5ab1 Ether0.000520152
0x31cab9f9c569906851e8dceff1b8e41c3ea58e05ad907e0408e9e33d7824b6411 day 9 hrs ago0x9bffd1579bd6760a186fff1a720f2a5db35de0f4  IN   0xc778417e063141139fce010982780140aa0cd5ab0 Ether0.000566112
0x7200203e5e75887e9eab0c885ae79d51253bdafc461734727096cb0acb4f092c1 day 9 hrs ago0x9bffd1579bd6760a186fff1a720f2a5db35de0f4  IN   0xc778417e063141139fce010982780140aa0cd5ab3 Ether0.000520152
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 Internal Transactions as a result of Contract Execution
 Latest 25 Internal Txns, Click Here To View More View All
ParentTxHash Block Age From To Value
0x2df2a238b268e3c357736033ca82088378dcc3402037e07c54f37f98c305707833533912 hrs 2 mins ago0xe4aa4aa4d768aeed2a6c84d698fecad89d24773b0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0xb45ca172dd7c885e85856a8e00cf2a1ce118bba6caa7b11a838116f40653701c33523776 hrs 16 mins ago0xf34171f8a56f36b72564897b05fca68efc28009b0xc778417e063141139fce010982780140aa0cd5ab0.2 Ether
0xc9e2969d16d57e7fbaf43af8eb2cb15442be0555634813b6fefc13b4bb30709333523736 hrs 17 mins ago0xf34171f8a56f36b72564897b05fca68efc28009b0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0xa51ecb8dd3bfab5a8ac8359cffb0643e75574d59ea53d97e74e34e2d7bb24d0f33523676 hrs 18 mins ago0xf34171f8a56f36b72564897b05fca68efc28009b0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x8ca7f3b4b6bf4eda08d8fb7be5b2fe5e1c5be944f2482617f945f5505d9267ed335069913 hrs 15 mins ago0x223374626583c65599c8c9dc1e23151224e770550xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x97cdbc7878894c3ff6e474b5fc9fa9b69abf2a0fb8a52abf77bdc75c9733b4c4335068313 hrs 19 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00.013512691623485659 Ether
0x2c6375d39572775061b5a8fc6f7b3852d8140f12858d67bce26a9b3c3ea1222a335066313 hrs 24 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00.001025880979894898 Ether
0xe45e3f8067dac2dbb62af3fe26ec2479385d5a901b57abebcda47d2f3d1e973b335065413 hrs 26 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x7954707b6ffe1b602e497edbbb39546c4a744f346.09 Ether
0xe2842e838625cafaccbfe33b4c19a67640bd64224f80b936c5f4e991c289fbba334897320 hrs 27 mins ago0xd2dbf3250a764eaaa94fa0c84ed87c0edc8ed04e0xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x1362c0d005585522d2f4bf9db527adb352e48fef276eb6a429187f11ea5a81ad334828123 hrs 20 mins ago0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x090ffc4df4c0842633f7aed991e1836ebf3cc887baf9228d1f3df86b84b0ab90334827923 hrs 20 mins ago0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00xc778417e063141139fce010982780140aa0cd5ab0.2 Ether
0xbeac5560035076f905e884e0e575c562a60c96eea38bf39ce71c11893264fab8334827523 hrs 21 mins ago0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x025f707b0ecccee506a42fd3bbcca79884888ce65e0fa312084947e1361f018f334827123 hrs 22 mins ago0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
0x92250898e45d08f7b44519f874c895fbca24641831fe163bd692ee9df5094c73334826723 hrs 23 mins ago0x0bcb7179e5a76aeacc1d362b4425509383e9e5b00xc778417e063141139fce010982780140aa0cd5ab0.1 Ether
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0x92d7ff10b0b9defd918b06754273573a0ba499e96f529b8cc6573f3e2b55de92334816123 hrs 50 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60.750000552272576796 Ether
0xf2cc956ff00976a94a7b9a59be931a76df780d0ce84a11c024a2799ee478eb8a334813523 hrs 56 mins ago0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60xc778417e063141139fce010982780140aa0cd5ab0.25 Ether
0xc20e33e1f71c7d302b2f3d42deede99e15058c3853fdaf01ff43296b8cd17b6f334813223 hrs 57 mins ago0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60xc778417e063141139fce010982780140aa0cd5ab0.25 Ether
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0x4b23a74ed0fcb9c776a157f2340271960216868b3b8fab5e4e021c57d3a0948d33481191 day ago0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60xc778417e063141139fce010982780140aa0cd5ab0.25 Ether
0x8f6d0c719b0c4160e3c38566d8d2891899ee405192d87dde68994576cdac56db33481121 day 2 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60.150000325492944155 Ether
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0xe97259439a73a3833c209a5569a9d5d047c77f2abacfcb70667b25ba653d097933479701 day 37 mins ago0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60xc778417e063141139fce010982780140aa0cd5ab0.35 Ether
0x228e103d4304a80e3fdca5e1b2792f7247a11ecc5a50cca06c865ef2cc72c62f33479541 day 41 mins ago0xc778417e063141139fce010982780140aa0cd5ab0x9b369d1c401191a0c3e7593e7638d1c240e7e6e60.400001770808995348 Ether
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity), NestedArrayFunctionCallDecoder (medium-severity) SolidityCompiler Bugs.

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

  Contract Source Code   Find Similiar Contracts

// 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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  Developers that use the GNU GPL protect your rights with two steps:
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measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such

  When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
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modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
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  4. Conveying Verbatim Copies.

  You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
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
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    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
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    c) You must license the entire work, as a whole, under this
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    d) If the work has interactive user interfaces, each must display
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  A compilation of a covered work with other separate and independent
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in or on a volume of a storage or distribution medium, is called an
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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
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    customarily used for software interchange.

    b) Convey the object code in, or embodied in, a physical product
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    long as you offer spare parts or customer support for that product
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    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
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    d) Convey the object code by offering access from a designated
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  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
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  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
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  "Installation Information" for a User Product means any methods,
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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
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User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
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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
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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
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  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
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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


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