{
  "contractName": "XBRChannel",
  "abi": [
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "marketAdr",
          "type": "address"
        }
      ],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "constructor"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": false,
          "internalType": "enum XBRTypes.ChannelType",
          "name": "ctype",
          "type": "uint8"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "marketId",
          "type": "bytes16"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "payout",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "fee",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "refund",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "closedAt",
          "type": "uint256"
        }
      ],
      "name": "Closed",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": false,
          "internalType": "enum XBRTypes.ChannelType",
          "name": "ctype",
          "type": "uint8"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "marketId",
          "type": "bytes16"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "payout",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "fee",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "refund",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "timeoutAt",
          "type": "uint256"
        }
      ],
      "name": "Closing",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "address",
          "name": "account",
          "type": "address"
        }
      ],
      "name": "MaintainerAdded",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "address",
          "name": "account",
          "type": "address"
        }
      ],
      "name": "MaintainerRemoved",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": false,
          "internalType": "enum XBRTypes.ChannelType",
          "name": "ctype",
          "type": "uint8"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "marketId",
          "type": "bytes16"
        },
        {
          "indexed": true,
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "indexed": false,
          "internalType": "address",
          "name": "actor",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "address",
          "name": "delegate",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "address",
          "name": "marketmaker",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "address",
          "name": "recipient",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "amount",
          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "bytes",
          "name": "signature",
          "type": "bytes"
        }
      ],
      "name": "Opened",
      "type": "event"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "address",
          "name": "account",
          "type": "address"
        }
      ],
      "name": "addMaintainer",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "bytes16",
          "name": "",
          "type": "bytes16"
        }
      ],
      "name": "channelClosingStates",
      "outputs": [
        {
          "internalType": "enum XBRTypes.ChannelState",
          "name": "state",
          "type": "uint8"
        },
        {
          "internalType": "uint256",
          "name": "closingAt",
          "type": "uint256"
        },
        {
          "internalType": "uint32",
          "name": "closingSeq",
          "type": "uint32"
        },
        {
          "internalType": "uint256",
          "name": "closingBalance",
          "type": "uint256"
        },
        {
          "internalType": "uint256",
          "name": "closedAt",
          "type": "uint256"
        },
        {
          "internalType": "uint32",
          "name": "closedSeq",
          "type": "uint32"
        },
        {
          "internalType": "uint256",
          "name": "closedBalance",
          "type": "uint256"
        },
        {
          "internalType": "bytes",
          "name": "delegateSignature",
          "type": "bytes"
        },
        {
          "internalType": "bytes",
          "name": "marketmakerSignature",
          "type": "bytes"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "bytes16",
          "name": "",
          "type": "bytes16"
        }
      ],
      "name": "channels",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "created",
          "type": "uint256"
        },
        {
          "internalType": "uint32",
          "name": "seq",
          "type": "uint32"
        },
        {
          "internalType": "enum XBRTypes.ChannelType",
          "name": "ctype",
          "type": "uint8"
        },
        {
          "internalType": "bytes16",
          "name": "marketId",
          "type": "bytes16"
        },
        {
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "internalType": "address",
          "name": "actor",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "delegate",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "marketmaker",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "recipient",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "amount",
          "type": "uint256"
        },
        {
          "internalType": "bytes",
          "name": "signature",
          "type": "bytes"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "address",
          "name": "account",
          "type": "address"
        }
      ],
      "name": "isMaintainer",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "market",
      "outputs": [
        {
          "internalType": "contract XBRMarket",
          "name": "",
          "type": "address"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [],
      "name": "renounceMaintainer",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "enum XBRTypes.ChannelType",
          "name": "ctype",
          "type": "uint8"
        },
        {
          "internalType": "uint256",
          "name": "openedAt",
          "type": "uint256"
        },
        {
          "internalType": "bytes16",
          "name": "marketId",
          "type": "bytes16"
        },
        {
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "internalType": "address",
          "name": "actor",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "delegate",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "marketmaker",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "recipient",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "amount",
          "type": "uint256"
        },
        {
          "internalType": "bytes",
          "name": "signature",
          "type": "bytes"
        }
      ],
      "name": "openChannel",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "bytes16",
          "name": "channelId",
          "type": "bytes16"
        },
        {
          "internalType": "uint256",
          "name": "closeAt",
          "type": "uint256"
        },
        {
          "internalType": "uint32",
          "name": "closingChannelSeq",
          "type": "uint32"
        },
        {
          "internalType": "uint256",
          "name": "balance",
          "type": "uint256"
        },
        {
          "internalType": "bool",
          "name": "isFinal",
          "type": "bool"
        },
        {
          "internalType": "bytes",
          "name": "delegateSignature",
          "type": "bytes"
        },
        {
          "internalType": "bytes",
          "name": "marketmakerSignature",
          "type": "bytes"
        }
      ],
      "name": "closeChannel",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ],
  "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"marketAdr\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"enum XBRTypes.ChannelType\",\"name\":\"ctype\",\"type\":\"uint8\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"marketId\",\"type\":\"bytes16\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"payout\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"fee\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"refund\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"closedAt\",\"type\":\"uint256\"}],\"name\":\"Closed\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"enum XBRTypes.ChannelType\",\"name\":\"ctype\",\"type\":\"uint8\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"marketId\",\"type\":\"bytes16\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"payout\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"fee\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"refund\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"timeoutAt\",\"type\":\"uint256\"}],\"name\":\"Closing\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MaintainerAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MaintainerRemoved\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"enum XBRTypes.ChannelType\",\"name\":\"ctype\",\"type\":\"uint8\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"marketId\",\"type\":\"bytes16\"},{\"indexed\":true,\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"actor\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"delegate\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"marketmaker\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"signature\",\"type\":\"bytes\"}],\"name\":\"Opened\",\"type\":\"event\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"addMaintainer\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"bytes16\",\"name\":\"\",\"type\":\"bytes16\"}],\"name\":\"channelClosingStates\",\"outputs\":[{\"internalType\":\"enum XBRTypes.ChannelState\",\"name\":\"state\",\"type\":\"uint8\"},{\"internalType\":\"uint256\",\"name\":\"closingAt\",\"type\":\"uint256\"},{\"internalType\":\"uint32\",\"name\":\"closingSeq\",\"type\":\"uint32\"},{\"internalType\":\"uint256\",\"name\":\"closingBalance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"closedAt\",\"type\":\"uint256\"},{\"internalType\":\"uint32\",\"name\":\"closedSeq\",\"type\":\"uint32\"},{\"internalType\":\"uint256\",\"name\":\"closedBalance\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"delegateSignature\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"marketmakerSignature\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"bytes16\",\"name\":\"\",\"type\":\"bytes16\"}],\"name\":\"channels\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"created\",\"type\":\"uint256\"},{\"internalType\":\"uint32\",\"name\":\"seq\",\"type\":\"uint32\"},{\"internalType\":\"enum XBRTypes.ChannelType\",\"name\":\"ctype\",\"type\":\"uint8\"},{\"internalType\":\"bytes16\",\"name\":\"marketId\",\"type\":\"bytes16\"},{\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"internalType\":\"address\",\"name\":\"actor\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"delegate\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"marketmaker\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"signature\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"internalType\":\"uint256\",\"name\":\"closeAt\",\"type\":\"uint256\"},{\"internalType\":\"uint32\",\"name\":\"closingChannelSeq\",\"type\":\"uint32\"},{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"delegateSignature\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"marketmakerSignature\",\"type\":\"bytes\"}],\"name\":\"closeChannel\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"isMaintainer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"market\",\"outputs\":[{\"internalType\":\"contract XBRMarket\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"enum XBRTypes.ChannelType\",\"name\":\"ctype\",\"type\":\"uint8\"},{\"internalType\":\"uint256\",\"name\":\"openedAt\",\"type\":\"uint256\"},{\"internalType\":\"bytes16\",\"name\":\"marketId\",\"type\":\"bytes16\"},{\"internalType\":\"bytes16\",\"name\":\"channelId\",\"type\":\"bytes16\"},{\"internalType\":\"address\",\"name\":\"actor\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"delegate\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"marketmaker\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"signature\",\"type\":\"bytes\"}],\"name\":\"openChannel\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceMaintainer\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{\"addMaintainer(address)\":{\"params\":{\"account\":\"The account to grant maintainer rights to.\"}},\"constructor\":{\"params\":{\"marketAdr\":\"The XBR markets contract this instance is associated with.\"}},\"isMaintainer(address)\":{\"params\":{\"account\":\"The account to check.\"},\"return\":\"`true` if the account is maintainer, otherwise `false`.\"},\"openChannel(uint8,uint256,bytes16,bytes16,address,address,address,address,uint256,bytes)\":{\"params\":{\"actor\":\"The actor (buyer/seller in the market) that opened this channel.\",\"amount\":\"The amount initially transfered to and held in the channel until closed.\",\"channelId\":\"The ID of the new XBR channel (must be unique).\",\"ctype\":\"Channel type: payment or paying channel.\",\"delegate\":\"The delegate (off-chain) allowed to spend/earn-on this channel (off-chain)  in the name of the actor (buyer/seller in the market).\",\"marketId\":\"The ID of the XBR market this channel is associated with.\",\"marketmaker\":\"The off-chain market maker executing the channel.\",\"openedAt\":\"Block number when the channel opening signature was created.\",\"recipient\":\"The receiver (on-chain) of the channel payout.\",\"signature\":\"EIP712 signature, signed by the member.\"}}}},\"userdoc\":{\"methods\":{\"addMaintainer(address)\":{\"notice\":\"Add a new maintainer to the list of maintainers.\"},\"closeChannel(bytes16,uint256,uint32,uint256,bool,bytes,bytes)\":{\"notice\":\"Trigger closing this payment channel. When the first participant has called `close()` submitting its latest transaction/state, a timeout period begins during which the other party of the payment channel has to submit its latest transaction/state too. When both transaction have been submitted, and the submitted transactions/states agree, the channel immediately closes, and the consumed amount of token in the channel is transferred to the channel recipient, and the remaining amount of token is transferred back to the original sender.\"},\"constructor\":\"Constructor for this contract, only called once (when deploying the network). \",\"isMaintainer(address)\":{\"notice\":\"Check if the given address is currently a maintainer.\"},\"openChannel(uint8,uint256,bytes16,bytes16,address,address,address,address,uint256,bytes)\":{\"notice\":\"Open a new XBR payment/paying channel for processing off-chain micro-transactions. \"},\"renounceMaintainer()\":{\"notice\":\"Give away maintainer rights.\"}},\"notice\":\"XBR Payment/Paying Channel between a XBR data consumer and the XBR market maker, or the XBR Market Maker and a XBR data provider.\"}},\"settings\":{\"compilationTarget\":{\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRChannel.sol\":\"XBRChannel\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRCatalog.sol\":{\"keccak256\":\"0xe348489559b4067fb48fdda5f284c026bb6e69654cfe6cf3ed04369605da8fd3\",\"urls\":[\"bzz-raw://b9b373ce93b6811c66294f7875f1499fa0baa4506665f04d1afa97e742227831\",\"dweb:/ipfs/QmSJnw3abCaVanF8NYJ1sTYgrzVNCdtgdRVbNDMzfAt5Mz\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRChannel.sol\":{\"keccak256\":\"0x12425fe6641fe72afe543a8ed54decc97dab97d533e0c8006a60fa99a90df9b7\",\"urls\":[\"bzz-raw://3793ce4874437f979f5a0acfcb17da60e208a2b636fffd08a3c7c516a584ce9b\",\"dweb:/ipfs/QmNa7Mb8trNfjJCotyWgt2sbHGXPjjBwuAvWfEQHNViQsa\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRMaintained.sol\":{\"keccak256\":\"0x2d3c274d75b270759fd8d6822d0690595cdae6d3878abc7eb33c3d19ce358dfe\",\"urls\":[\"bzz-raw://f5995d408d9a328f36a76e9c9e09828a0ff114757f7c25650944367bcd403389\",\"dweb:/ipfs/QmPNqFpo6x9pF7xkC28eEyTqAcT9WwTvUYsVEKbTVywqs3\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRMarket.sol\":{\"keccak256\":\"0x9d896c5da724c7a70fdb9fa7a0af2998831214a3b64c1318a7d78a32c01c2d46\",\"urls\":[\"bzz-raw://afdb4eca2904ab2e6310f5ee46a66b4896b8415f53b97fab5cf3c66c2eb37d6e\",\"dweb:/ipfs/Qmb9gbBk1KnQ8e1nP98tNQCLujCabrPij3gqhMfrjktMaF\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRNetwork.sol\":{\"keccak256\":\"0x32ad15ae4bb11302ab25ede12755a8fbb99feb054b6eabe48bfc7dfd24aad936\",\"urls\":[\"bzz-raw://ab4f124a80210614079733243fdbade7d310cd37b8cd7a94db9bc1bf4ba712d6\",\"dweb:/ipfs/QmfUbd8SWju2XZRYtmujEnc6dYGndtUE7LBmqdLJ33337X\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRToken.sol\":{\"keccak256\":\"0xe356783413d9d169270eddee3718f6761cf1a46cd6bf634a78a46627cf036fa8\",\"urls\":[\"bzz-raw://986c7122987c421a25e4c22af312f05c2dc4cd9904cf1c33c45ccd71faf8e98f\",\"dweb:/ipfs/QmZN9MAy9qprWcA1cUjsZnMZopcw7XdoWifznU2zE3MrZp\"]},\"/home/travis/build/crossbario/xbr-protocol/contracts/XBRTypes.sol\":{\"keccak256\":\"0xb7d784604c76b74c4f0fcaf2960e48e25c068beaf70a07ac2146d48d24d245b4\",\"urls\":[\"bzz-raw://7f00b3af2ba72b830d5ed24a88175c117d1cf56d94001239946e872037f27aa0\",\"dweb:/ipfs/QmdGZPFtodRLhuXZ2Nmxq7SU8NiaaFxy65WU2YUhdNBbyK\"]},\"openzeppelin-solidity/contracts/GSN/Context.sol\":{\"keccak256\":\"0x90a3995645af7562d84b9d69363ffa5ae7217714ab61e951bf7bc450f40e4061\",\"urls\":[\"bzz-raw://216ef9d6b614db4eb46970b4e84903f2534a45572dd30a79f0041f1a5830f436\",\"dweb:/ipfs/QmNPrJ4MWKUAWzKXpUqeyKRUfosaoANZAqXgvepdrCwZAG\"]},\"openzeppelin-solidity/contracts/access/Roles.sol\":{\"keccak256\":\"0xb002c378d7b82a101bd659c341518953ca0919d342c0a400196982c0e7e7bcdb\",\"urls\":[\"bzz-raw://00a788c4631466c220b385bdd100c571d24b2deccd657615cfbcef6cadf669a4\",\"dweb:/ipfs/QmTEwDbjJNxmMNCDMqtuou3dyM8Wtp8Q9NFvn7SAVM7Jf3\"]},\"openzeppelin-solidity/contracts/cryptography/ECDSA.sol\":{\"keccak256\":\"0xc89ea7e48ba477b1781b24ae963442fff1bb2af33b6178dad679a3fa2f5ab2de\",\"urls\":[\"bzz-raw://b736ddad8143f8f1cd13c20809d4ebce5f5a8c7725081b0b703294078bd506d1\",\"dweb:/ipfs/QmdhTWCXFCuwG9JaPMjwnhkQoDj9su8R7KMPNvD5z9KeWD\"]},\"openzeppelin-solidity/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x640b6dee7a4b830bdfd52b5031a07fc2b12209f5b2e29e5d364a7d37f69d8076\",\"urls\":[\"bzz-raw://31113152e1ddb78fe7a4197f247591ca894e93f916867beb708d8e747b6cc74f\",\"dweb:/ipfs/QmbZaJyXdpsYGykVhHH9qpVGQg9DGCxE2QufbCUy3daTgq\"]},\"openzeppelin-solidity/contracts/token/ERC20/ERC20.sol\":{\"keccak256\":\"0xb15af804e2bc97db51e4e103f13de9fe13f87e6b835d7a88c897966c0e58506e\",\"urls\":[\"bzz-raw://1e8cff8437557fc915a3bed968fcd8f2df9809599e665ef69c2c9ce628548055\",\"dweb:/ipfs/QmP5spYP8vs2jvLF8zNrXUbqB79hMsoEvMHiLcBxerWKcm\"]},\"openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol\":{\"keccak256\":\"0x4a3a810b7ebe742e897e1fd428b3eeed2196d3acea58eaf9c566ed10d545d2ed\",\"urls\":[\"bzz-raw://28d03f328e19e4099d5013de0649afaeaabac1a614e130767ab1cb4aca9775b6\",\"dweb:/ipfs/Qmb9iW7yNuYehB2NfhRMs9TakqbLVQhBhmGMkaDZ5g1Eb4\"]},\"openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xe5bb0f57cff3e299f360052ba50f1ea0fff046df2be070b6943e0e3c3fdad8a9\",\"urls\":[\"bzz-raw://59fd025151435da35faa8093a5c7a17de02de9d08ad27275c5cdf05050820d91\",\"dweb:/ipfs/QmQMvwEcPhoRXzbXyrdoeRtvLoifUW9Qh7Luho7bmUPRkc\"]}},\"version\":1}",
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  "source": "///////////////////////////////////////////////////////////////////////////////\n//\n//  Copyright (C) 2018-2020 Crossbar.io Technologies GmbH and contributors.\n//\n//  Licensed under the Apache License, Version 2.0 (the \"License\");\n//  you may not use this file except in compliance with the License.\n//  You may obtain a copy of the License at\n//\n//      http://www.apache.org/licenses/LICENSE-2.0\n//\n//  Unless required by applicable law or agreed to in writing, software\n//  distributed under the License is distributed on an \"AS IS\" BASIS,\n//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n//  See the License for the specific language governing permissions and\n//  limitations under the License.\n//\n///////////////////////////////////////////////////////////////////////////////\n\npragma solidity ^0.5.12;\npragma experimental ABIEncoderV2;\n\n// https://openzeppelin.org/api/docs/math_SafeMath.html\nimport \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\n\n// https://openzeppelin.org/api/docs/cryptography_ECDSA.html\nimport \"openzeppelin-solidity/contracts/cryptography/ECDSA.sol\";\n\nimport \"./XBRMaintained.sol\";\nimport \"./XBRTypes.sol\";\nimport \"./XBRToken.sol\";\nimport \"./XBRNetwork.sol\";\nimport \"./XBRMarket.sol\";\n\n\n/**\n * XBR Payment/Paying Channel between a XBR data consumer and the XBR market maker,\n * or the XBR Market Maker and a XBR data provider.\n */\ncontract XBRChannel is XBRMaintained {\n\n    // Add safe math functions to uint256 using SafeMath lib from OpenZeppelin\n    using SafeMath for uint256;\n\n    // Add recover method for bytes32 using ECDSA lib from OpenZeppelin\n    using ECDSA for bytes32;\n\n    /// Event emittedd when a new XBR data market has opened.\n    event Opened(XBRTypes.ChannelType ctype, bytes16 indexed marketId, bytes16 indexed channelId, address actor,\n        address delegate, address marketmaker, address recipient, uint256 amount, bytes signature);\n\n    /**\n     * Event emitted when payment channel is closing (that is, one of the two state channel\n     * participants has called \"close()\", initiating start of the channel timeout).\n     */\n    event Closing(XBRTypes.ChannelType ctype, bytes16 indexed marketId, bytes16 indexed channelId,\n        uint256 payout, uint256 fee, uint256 refund, uint256 timeoutAt);\n\n    /**\n     * Event emitted when payment channel has finally closed, which happens after both state\n     * channel participants have called close(), agreeing on last state, or after the timeout\n     * at latest - in case the second participant doesn't react within timeout)\n     */\n    event Closed(XBRTypes.ChannelType ctype, bytes16 indexed marketId, bytes16 indexed channelId,\n        uint256 payout, uint256 fee, uint256 refund, uint256 closedAt);\n\n    /// Instance of XBRMarket contract this contract is linked to.\n    XBRMarket public market;\n\n    /// Created channels are sequence numbered using this counter (to allow deterministic collision-free IDs for channels)\n    uint32 private channelSeq = 1;\n\n    /// Table of all XBR Channels.\n    mapping(bytes16 => XBRTypes.Channel) public channels;\n\n    /// Table of all XBR Channel closing states.\n    mapping(bytes16 => XBRTypes.ChannelClosingState) public channelClosingStates;\n\n    /// Constructor for this contract, only called once (when deploying the network).\n    ///\n    /// @param marketAdr The XBR markets contract this instance is associated with.\n    constructor (address marketAdr) public {\n        market = XBRMarket(marketAdr);\n    }\n\n    /// Open a new XBR payment/paying channel for processing off-chain micro-transactions.\n    ///\n    /// @param ctype Channel type: payment or paying channel.\n    /// @param openedAt Block number when the channel opening signature was created.\n    /// @param marketId The ID of the XBR market this channel is associated with.\n    /// @param channelId The ID of the new XBR channel (must be unique).\n    /// @param actor The actor (buyer/seller in the market) that opened this channel.\n    /// @param delegate The delegate (off-chain) allowed to spend/earn-on this channel (off-chain)\n    ///  in the name of the actor (buyer/seller in the market).\n    /// @param marketmaker The off-chain market maker executing the channel.\n    /// @param recipient The receiver (on-chain) of the channel payout.\n    /// @param amount The amount initially transfered to and held in the channel until closed.\n    /// @param signature EIP712 signature, signed by the member.\n    function openChannel (XBRTypes.ChannelType ctype, uint256 openedAt, bytes16 marketId, bytes16 channelId,\n        address actor, address delegate, address marketmaker, address recipient, uint256 amount,\n        bytes memory signature) public {\n\n        // market must exist\n        require(market.getMarketOwner(marketId) != address(0), \"NO_SUCH_MARKET\");\n\n        // channel must not yet exist\n        require(channels[channelId].actor == address(0), \"INVALID_CHANNEL_ALREADY_EXISTS\");\n\n        // the actor (buyer/seller in the market) must be a registered member\n        (, , , XBRTypes.MemberLevel actor_member_level, ) = market.network().members(actor);\n        require(actor_member_level == XBRTypes.MemberLevel.ACTIVE ||\n                actor_member_level == XBRTypes.MemberLevel.VERIFIED, \"INVALID_CHANNEL_ACTOR\");\n\n        // must provide a valid delegate address, but the delegate doesn't need to be member!\n        require(delegate != address(0), \"INVALID_CHANNEL_DELEGATE\");\n\n        // must provide a valid marketmaker address: this must be the market maker set in the market!\n        require(marketmaker == market.getMarketMaker(marketId), \"INVALID_CHANNEL_MARKETMAKER\");\n\n        // the recepient must be a registered member\n        (, , , XBRTypes.MemberLevel recipient_member_level, ) = market.network().members(recipient);\n        require(recipient_member_level == XBRTypes.MemberLevel.ACTIVE ||\n                recipient_member_level == XBRTypes.MemberLevel.VERIFIED, \"INVALID_CHANNEL_RECIPIENT\");\n\n        // the ERC20 coin used in the market as a means of payment\n        // FIXME: CompilerError: Stack too deep, try removing local variables.\n        // address coin = market.getMarketCoin(marketId);\n\n        // signature must have been created in a window of PRESIGNED_TXN_MAX_AGE blocks from the current one\n        require(openedAt <= block.number && (block.number <= market.network().PRESIGNED_TXN_MAX_AGE() ||\n            openedAt >= (block.number - market.network().PRESIGNED_TXN_MAX_AGE())), \"INVALID_CHANNEL_BLOCK_NUMBER\");\n\n        // payment channel amount must be positive\n        require(amount > 0 && amount <= IERC20(market.getMarketCoin(marketId)).totalSupply(), \"INVALID_CHANNEL_AMOUNT\");\n\n        // the data used to open the new channel must have a valid signature, signed by the\n        // actor (buyer/seller in the market)\n        XBRTypes.EIP712ChannelOpen memory eip712_obj = XBRTypes.EIP712ChannelOpen(market.network().verifyingChain(),\n            market.network().verifyingContract(), uint8(ctype), openedAt, marketId, channelId,\n            actor, delegate, marketmaker, recipient, amount);\n        require(XBRTypes.verify(actor, eip712_obj, signature), \"INVALID_CHANNEL_SIGNATURE\");\n\n        if (ctype == XBRTypes.ChannelType.PAYMENT) {\n            // transaction sender must be a market buyer-actor or the market-maker (the piece of running software for the market)\n            require(msg.sender == market.getMarketMaker(marketId) ||\n                    msg.sender == actor, \"SENDER_NOT_MARKETMAKER_OR_BUYER\");\n\n            // actor must be consumer in the market\n            require(market.isActor(marketId, actor, XBRTypes.ActorType.CONSUMER) ||\n                    market.isActor(marketId, actor, XBRTypes.ActorType.PROVIDER_CONSUMER), \"ACTOR_NOT_CONSUMER\");\n\n            // technical recipient of the unidirectional, half-legged channel must be the owner (operator) of the market\n            require(recipient == market.getMarketOwner(marketId), \"RECIPIENT_NOT_MARKET\");\n\n            // for payment channels, tokens for the channel must have been approved by the (consumer) actor\n            require(IERC20(market.getMarketCoin(marketId)).transferFrom(actor, address(this), amount),\n                \"OPEN_CHANNEL_TRANSFER_FROM_ACTOR_FAILED\");\n\n        } else if (ctype == XBRTypes.ChannelType.PAYING) {\n            // transaction sender must be the market-owner (aka market-operator) or the market-maker (the piece of running software for the market)\n            require(msg.sender == market.getMarketMaker(marketId) ||\n                    msg.sender == market.getMarketOwner(marketId), \"SENDER_NOT_MARKETMAKER_OR_OWNER\");\n\n            // actor must be provider in the market\n            require(market.isActor(marketId, actor, XBRTypes.ActorType.PROVIDER) ||\n                    market.isActor(marketId, actor, XBRTypes.ActorType.PROVIDER_CONSUMER), \"ACTOR_NOT_PROVIDER\");\n\n            // technical recipient of the unidirectional, half-legged channel must be a provider (seller) in the market\n            require(recipient == actor, \"RECIPIENT_NOT_ACTOR\");\n\n            // for paying channels, tokens for the channel must have been approved by the market maker\n            require(IERC20(market.getMarketCoin(marketId)).transferFrom(market.getMarketMaker(marketId), address(this), amount),\n                \"OPEN_CHANNEL_TRANSFER_FROM_MARKETMAKER_FAILED\");\n\n        } else {\n            require(false, \"INVALID_CHANNEL_TYPE\");\n        }\n\n        // Everything is OK! Continue actually opening the channel ..\n\n        // track channel static information\n        channels[channelId] = XBRTypes.Channel(openedAt, channelSeq, ctype, marketId, channelId, actor,\n            delegate, marketmaker, recipient, amount, signature);\n\n        // track channel closing (== modifiable) information\n        channelClosingStates[channelId] = XBRTypes.ChannelClosingState(XBRTypes.ChannelState.OPEN,\n            0, 0, 0, 0, 0, 0, \"\", \"\");\n\n        // increment channel sequence for next channel\n        channelSeq = channelSeq + 1;\n\n        // notify observers (eg a dormant market maker waiting to be associated)\n        emit Opened(ctype, marketId, channelId, actor, delegate, marketmaker, recipient, amount, signature);\n    }\n\n    /**\n     * Trigger closing this payment channel. When the first participant has called `close()`\n     * submitting its latest transaction/state, a timeout period begins during which the\n     * other party of the payment channel has to submit its latest transaction/state too.\n     * When both transaction have been submitted, and the submitted transactions/states agree,\n     * the channel immediately closes, and the consumed amount of token in the channel is\n     * transferred to the channel recipient, and the remaining amount of token is transferred\n     * back to the original sender.\n     */\n    function closeChannel (bytes16 channelId, uint256 closeAt, uint32 closingChannelSeq, uint256 balance, bool isFinal,\n        bytes memory delegateSignature, bytes memory marketmakerSignature) public {\n\n        // channel must exist\n        require(channels[channelId].actor != address(0), \"NO_SUCH_CHANNEL\");\n\n        // this should not happen if above succeeds, but better be paranoid\n        require(channelClosingStates[channelId].state != XBRTypes.ChannelState.NULL, \"NO_SUCH_CHANNEL\");\n\n        // channel must be in correct state (OPEN or CLOSING)\n        require(channelClosingStates[channelId].state == XBRTypes.ChannelState.OPEN ||\n                channelClosingStates[channelId].state == XBRTypes.ChannelState.CLOSING, \"CHANNEL_NOT_OPEN\");\n\n        // signature must have been created in a window of PRESIGNED_TXN_MAX_AGE blocks from the current one\n        require(closeAt <= block.number && (block.number <= market.network().PRESIGNED_TXN_MAX_AGE() ||\n            closeAt >= (block.number - market.network().PRESIGNED_TXN_MAX_AGE())), \"INVALID_CHANNEL_BLOCK_NUMBER\");\n\n        // check delegate signature\n        require(XBRTypes.verify(channels[channelId].delegate, XBRTypes.EIP712ChannelClose(market.network().verifyingChain(),\n            market.network().verifyingContract(), closeAt, channels[channelId].marketId, channelId, closingChannelSeq,\n            balance, isFinal), delegateSignature), \"INVALID_DELEGATE_SIGNATURE\");\n\n        // check market maker signature\n        require(XBRTypes.verify(channels[channelId].marketmaker, XBRTypes.EIP712ChannelClose(market.network().verifyingChain(),\n            market.network().verifyingContract(), closeAt, channels[channelId].marketId, channelId, closingChannelSeq,\n            balance, isFinal), marketmakerSignature), \"INVALID_MARKETMAKER_SIGNATURE\");\n\n        // closing (off-chain) balance must be valid\n        require(0 <= balance && balance <= channels[channelId].amount, \"INVALID_CLOSING_BALANCE\");\n\n        // closing (off-chain) sequence must be valid\n        require(closingChannelSeq >= 1, \"INVALID_CLOSING_SEQ\");\n\n        // if the channel is already closing ..\n        if (channelClosingStates[channelId].state == XBRTypes.ChannelState.CLOSING) {\n            // the channel must not yet be timed out\n            require(channelClosingStates[channelId].closedAt == 0, \"INTERNAL_ERROR_CLOSED_AT_NONZERO\");\n            require(block.timestamp < channelClosingStates[channelId].closingAt, \"CHANNEL_TIMEOUT\"); // solhint-disable-line\n\n            // the submitted transaction must be more recent\n            require(channelClosingStates[channelId].closingSeq < closingChannelSeq, \"OUTDATED_TRANSACTION\");\n        }\n\n        // if we got a newer closing transaction, process it ..\n        if (closingChannelSeq > channelClosingStates[channelId].closingSeq) {\n            _doClosing(channelId, closingChannelSeq, balance);\n        }\n\n        // finally close the channel ..\n        if (isFinal || balance == 0 ||\n            (channelClosingStates[channelId].state == XBRTypes.ChannelState.CLOSING && block.timestamp >= channelClosingStates[channelId].closingAt)) { // solhint-disable-line\n            _doClose(channelId, closingChannelSeq, balance);\n        }\n    }\n\n    function _doClosing(bytes16 channelId, uint32 closingChannelSeq, uint256 balance) private {\n        // the ERC20 coin used in the market as a means of payment\n        address coin = market.getMarketCoin(channels[channelId].marketId);\n\n        // the amount earned (by the recipient) is initial channel amount minus last off-chain balance\n        uint256 earned = (channels[channelId].amount - balance);\n\n        // the remaining amount (send back to the buyer) via the last off-chain balance\n        // FIXME: CompilerError: Stack too deep, try removing local variables.\n        // uint256 refund = balance;\n\n        // the fee of the market operator (before network fees) is a percentage of the earned amount, where\n        // \"percentage\" is expressed as a fraction of the total amount of tokens (coins used in the market)\n        uint256 fee = earned * market.getMarketFee(channels[channelId].marketId) / IERC20(coin).totalSupply();\n        uint256 contribution = fee * market.network().contribution() / market.network().token().totalSupply();\n\n        // the amount paid out to the recipient is gross earned minus market fees\n        // FIXME: CompilerError: Stack too deep, try removing local variables.\n        // uint256 payout = earned - fee;\n\n        // the closing balance of a newer transaction must be not greater than anyone we already know\n        if (channelClosingStates[channelId].closingSeq > 0) {\n            require(balance <= channelClosingStates[channelId].closingBalance, \"TRANSACTION_BALANCE_OUTDATED\");\n        }\n\n        // note the closing transaction sequence number and closing off-chain balance\n        channelClosingStates[channelId].state = XBRTypes.ChannelState.CLOSING;\n        channelClosingStates[channelId].closingSeq = closingChannelSeq;\n        channelClosingStates[channelId].closingBalance = balance;\n\n        // note the new channel closing date\n        channelClosingStates[channelId].closingAt = block.timestamp + market.NONCOOPERATIVE_CHANNEL_CLOSE_TIMEOUT(); // solhint-disable-line\n\n        // notify channel observers\n        emit Closing(channels[channelId].ctype, channels[channelId].marketId, channelId,\n            earned - fee, fee - contribution, balance, channelClosingStates[channelId].closingAt);\n    }\n\n    function _doClose(bytes16 channelId, uint32 closingChannelSeq, uint256 balance) private {\n        // the ERC20 coin used in the market as a means of payment\n        address coin = market.getMarketCoin(channels[channelId].marketId);\n\n        // the amount earned (by the recipient) is initial channel amount minus last off-chain balance\n        uint256 earned = (channels[channelId].amount - balance);\n\n        // the remaining amount (send back to the buyer) via the last off-chain balance\n        // FIXME: CompilerError: Stack too deep, try removing local variables.\n        // uint256 refund = balance;\n\n        // the fee of the market operator (before network fees) is a percentage of the earned amount, where\n        // \"percentage\" is expressed as a fraction of the total amount of tokens (coins used in the market)\n        uint256 fee = earned * market.getMarketFee(channels[channelId].marketId) / IERC20(coin).totalSupply();\n        uint256 contribution = fee * market.network().contribution() / market.network().token().totalSupply();\n\n        // now send tokens locked in this channel (which escrows the tokens) to the recipient,\n        // the xbr network (for the network fee), and refund remaining tokens to the original sender\n        if (earned - fee > 0) {\n            if (channels[channelId].ctype == XBRTypes.ChannelType.PAYMENT) {\n                require(IERC20(coin).transfer(channels[channelId].marketmaker, earned - fee), \"CHANNEL_CLOSE_PAYOUT_TRANSFER_FAILED\");\n            } else {\n                require(IERC20(coin).transfer(channels[channelId].actor, earned - fee), \"CHANNEL_CLOSE_PAYOUT_TRANSFER_FAILED\");\n            }\n        }\n\n        if (balance > 0) {\n            if (channels[channelId].ctype == XBRTypes.ChannelType.PAYMENT) {\n                require(IERC20(coin).transfer(channels[channelId].actor, balance), \"CHANNEL_CLOSE_REFUND_TRANSFER_FAILED\");\n            } else {\n                require(IERC20(coin).transfer(channels[channelId].marketmaker, balance), \"CHANNEL_CLOSE_REFUND_TRANSFER_FAILED\");\n            }\n        }\n\n        if (fee > 0) {\n            require(IERC20(coin).transfer(market.getMarketOwner(channels[channelId].marketId), fee - contribution), \"CHANNEL_CLOSE_FEE_TRANSFER_FAILED\");\n            require(IERC20(coin).transfer(market.network().organization(), contribution), \"CHANNEL_CLOSE_FEE_TRANSFER_FAILED\");\n        }\n\n        // mark channel as closed (but do not selfdestruct)\n        channelClosingStates[channelId].closedAt = block.timestamp; // solhint-disable-line\n        channelClosingStates[channelId].state = XBRTypes.ChannelState.CLOSED;\n\n        // notify channel observers\n        emit Closed(channels[channelId].ctype, channels[channelId].marketId, channelId,\n            earned - fee, fee - contribution, balance, block.timestamp);\n    }\n}\n",
  "sourcePath": "/home/travis/build/crossbario/xbr-protocol/contracts/XBRChannel.sol",
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                        "src": "19008:25:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_enum$_ChannelType_$4346",
                          "typeString": "enum XBRTypes.ChannelType"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "expression": {
                          "argumentTypes": null,
                          "baseExpression": {
                            "argumentTypes": null,
                            "id": 1608,
                            "name": "channels",
                            "nodeType": "Identifier",
                            "overloadedDeclarations": [],
                            "referencedDeclaration": 549,
                            "src": "19035:8:2",
                            "typeDescriptions": {
                              "typeIdentifier": "t_mapping$_t_bytes16_$_t_struct$_Channel_$4484_storage_$",
                              "typeString": "mapping(bytes16 => struct XBRTypes.Channel storage ref)"
                            }
                          },
                          "id": 1610,
                          "indexExpression": {
                            "argumentTypes": null,
                            "id": 1609,
                            "name": "channelId",
                            "nodeType": "Identifier",
                            "overloadedDeclarations": [],
                            "referencedDeclaration": 1390,
                            "src": "19044:9:2",
                            "typeDescriptions": {
                              "typeIdentifier": "t_bytes16",
                              "typeString": "bytes16"
                            }
                          },
                          "isConstant": false,
                          "isLValue": true,
                          "isPure": false,
                          "lValueRequested": false,
                          "nodeType": "IndexAccess",
                          "src": "19035:19:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_struct$_Channel_$4484_storage",
                            "typeString": "struct XBRTypes.Channel storage ref"
                          }
                        },
                        "id": 1611,
                        "isConstant": false,
                        "isLValue": true,
                        "isPure": false,
                        "lValueRequested": false,
                        "memberName": "marketId",
                        "nodeType": "MemberAccess",
                        "referencedDeclaration": 4469,
                        "src": "19035:28:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_bytes16",
                          "typeString": "bytes16"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "id": 1612,
                        "name": "channelId",
                        "nodeType": "Identifier",
                        "overloadedDeclarations": [],
                        "referencedDeclaration": 1390,
                        "src": "19065:9:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_bytes16",
                          "typeString": "bytes16"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "commonType": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        },
                        "id": 1615,
                        "isConstant": false,
                        "isLValue": false,
                        "isPure": false,
                        "lValueRequested": false,
                        "leftExpression": {
                          "argumentTypes": null,
                          "id": 1613,
                          "name": "earned",
                          "nodeType": "Identifier",
                          "overloadedDeclarations": [],
                          "referencedDeclaration": 1408,
                          "src": "19088:6:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_uint256",
                            "typeString": "uint256"
                          }
                        },
                        "nodeType": "BinaryOperation",
                        "operator": "-",
                        "rightExpression": {
                          "argumentTypes": null,
                          "id": 1614,
                          "name": "fee",
                          "nodeType": "Identifier",
                          "overloadedDeclarations": [],
                          "referencedDeclaration": 1418,
                          "src": "19097:3:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_uint256",
                            "typeString": "uint256"
                          }
                        },
                        "src": "19088:12:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "commonType": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        },
                        "id": 1618,
                        "isConstant": false,
                        "isLValue": false,
                        "isPure": false,
                        "lValueRequested": false,
                        "leftExpression": {
                          "argumentTypes": null,
                          "id": 1616,
                          "name": "fee",
                          "nodeType": "Identifier",
                          "overloadedDeclarations": [],
                          "referencedDeclaration": 1418,
                          "src": "19102:3:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_uint256",
                            "typeString": "uint256"
                          }
                        },
                        "nodeType": "BinaryOperation",
                        "operator": "-",
                        "rightExpression": {
                          "argumentTypes": null,
                          "id": 1617,
                          "name": "contribution",
                          "nodeType": "Identifier",
                          "overloadedDeclarations": [],
                          "referencedDeclaration": 1436,
                          "src": "19108:12:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_uint256",
                            "typeString": "uint256"
                          }
                        },
                        "src": "19102:18:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "id": 1619,
                        "name": "balance",
                        "nodeType": "Identifier",
                        "overloadedDeclarations": [],
                        "referencedDeclaration": 1394,
                        "src": "19122:7:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        }
                      },
                      {
                        "argumentTypes": null,
                        "expression": {
                          "argumentTypes": null,
                          "id": 1620,
                          "name": "block",
                          "nodeType": "Identifier",
                          "overloadedDeclarations": [],
                          "referencedDeclaration": 6338,
                          "src": "19131:5:2",
                          "typeDescriptions": {
                            "typeIdentifier": "t_magic_block",
                            "typeString": "block"
                          }
                        },
                        "id": 1621,
                        "isConstant": false,
                        "isLValue": false,
                        "isPure": false,
                        "lValueRequested": false,
                        "memberName": "timestamp",
                        "nodeType": "MemberAccess",
                        "referencedDeclaration": null,
                        "src": "19131:15:2",
                        "typeDescriptions": {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        }
                      }
                    ],
                    "expression": {
                      "argumentTypes": [
                        {
                          "typeIdentifier": "t_enum$_ChannelType_$4346",
                          "typeString": "enum XBRTypes.ChannelType"
                        },
                        {
                          "typeIdentifier": "t_bytes16",
                          "typeString": "bytes16"
                        },
                        {
                          "typeIdentifier": "t_bytes16",
                          "typeString": "bytes16"
                        },
                        {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        },
                        {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        },
                        {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        },
                        {
                          "typeIdentifier": "t_uint256",
                          "typeString": "uint256"
                        }
                      ],
                      "id": 1603,
                      "name": "Closed",
                      "nodeType": "Identifier",
                      "overloadedDeclarations": [],
                      "referencedDeclaration": 540,
                      "src": "19001:6:2",
                      "typeDescriptions": {
                        "typeIdentifier": "t_function_event_nonpayable$_t_enum$_ChannelType_$4346_$_t_bytes16_$_t_bytes16_$_t_uint256_$_t_uint256_$_t_uint256_$_t_uint256_$returns$__$",
                        "typeString": "function (enum XBRTypes.ChannelType,bytes16,bytes16,uint256,uint256,uint256,uint256)"
                      }
                    },
                    "id": 1622,
                    "isConstant": false,
                    "isLValue": false,
                    "isPure": false,
                    "kind": "functionCall",
                    "lValueRequested": false,
                    "names": [],
                    "nodeType": "FunctionCall",
                    "src": "19001:146:2",
                    "typeDescriptions": {
                      "typeIdentifier": "t_tuple$__$",
                      "typeString": "tuple()"
                    }
                  },
                  "id": 1623,
                  "nodeType": "EmitStatement",
                  "src": "18996:151:2"
                }
              ]
            },
            "documentation": null,
            "id": 1625,
            "implemented": true,
            "kind": "function",
            "modifiers": [],
            "name": "_doClose",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1395,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1390,
                  "name": "channelId",
                  "nodeType": "VariableDeclaration",
                  "scope": 1625,
                  "src": "16358:17:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bytes16",
                    "typeString": "bytes16"
                  },
                  "typeName": {
                    "id": 1389,
                    "name": "bytes16",
                    "nodeType": "ElementaryTypeName",
                    "src": "16358:7:2",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bytes16",
                      "typeString": "bytes16"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1392,
                  "name": "closingChannelSeq",
                  "nodeType": "VariableDeclaration",
                  "scope": 1625,
                  "src": "16377:24:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint32",
                    "typeString": "uint32"
                  },
                  "typeName": {
                    "id": 1391,
                    "name": "uint32",
                    "nodeType": "ElementaryTypeName",
                    "src": "16377:6:2",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint32",
                      "typeString": "uint32"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1394,
                  "name": "balance",
                  "nodeType": "VariableDeclaration",
                  "scope": 1625,
                  "src": "16403:15:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1393,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "16403:7:2",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "16357:62:2"
            },
            "returnParameters": {
              "id": 1396,
              "nodeType": "ParameterList",
              "parameters": [],
              "src": "16428:0:2"
            },
            "scope": 1626,
            "src": "16340:2814:2",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "private"
          }
        ],
        "scope": 1627,
        "src": "1393:17763:2"
      }
    ],
    "src": "810:18347:2"
  },
  "compiler": {
    "name": "solc",
    "version": "0.5.16+commit.9c3226ce.Emscripten.clang"
  },
  "networks": {},
  "schemaVersion": "3.1.0",
  "updatedAt": "2020-04-13T15:29:57.147Z",
  "devdoc": {
    "methods": {
      "addMaintainer(address)": {
        "params": {
          "account": "The account to grant maintainer rights to."
        }
      },
      "constructor": {
        "params": {
          "marketAdr": "The XBR markets contract this instance is associated with."
        }
      },
      "isMaintainer(address)": {
        "params": {
          "account": "The account to check."
        },
        "return": "`true` if the account is maintainer, otherwise `false`."
      },
      "openChannel(uint8,uint256,bytes16,bytes16,address,address,address,address,uint256,bytes)": {
        "params": {
          "actor": "The actor (buyer/seller in the market) that opened this channel.",
          "amount": "The amount initially transfered to and held in the channel until closed.",
          "channelId": "The ID of the new XBR channel (must be unique).",
          "ctype": "Channel type: payment or paying channel.",
          "delegate": "The delegate (off-chain) allowed to spend/earn-on this channel (off-chain)  in the name of the actor (buyer/seller in the market).",
          "marketId": "The ID of the XBR market this channel is associated with.",
          "marketmaker": "The off-chain market maker executing the channel.",
          "openedAt": "Block number when the channel opening signature was created.",
          "recipient": "The receiver (on-chain) of the channel payout.",
          "signature": "EIP712 signature, signed by the member."
        }
      }
    }
  },
  "userdoc": {
    "methods": {
      "addMaintainer(address)": {
        "notice": "Add a new maintainer to the list of maintainers."
      },
      "closeChannel(bytes16,uint256,uint32,uint256,bool,bytes,bytes)": {
        "notice": "Trigger closing this payment channel. When the first participant has called `close()` submitting its latest transaction/state, a timeout period begins during which the other party of the payment channel has to submit its latest transaction/state too. When both transaction have been submitted, and the submitted transactions/states agree, the channel immediately closes, and the consumed amount of token in the channel is transferred to the channel recipient, and the remaining amount of token is transferred back to the original sender."
      },
      "constructor": "Constructor for this contract, only called once (when deploying the network). ",
      "isMaintainer(address)": {
        "notice": "Check if the given address is currently a maintainer."
      },
      "openChannel(uint8,uint256,bytes16,bytes16,address,address,address,address,uint256,bytes)": {
        "notice": "Open a new XBR payment/paying channel for processing off-chain micro-transactions. "
      },
      "renounceMaintainer()": {
        "notice": "Give away maintainer rights."
      }
    },
    "notice": "XBR Payment/Paying Channel between a XBR data consumer and the XBR market maker, or the XBR Market Maker and a XBR data provider."
  }
}