{
  "abi": [
    {
      "constant": true,
      "inputs": [],
      "name": "height",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        }
      ],
      "name": "heightAt",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [],
      "name": "init",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        },
        {
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "insert",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        }
      ],
      "name": "item",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        },
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        }
      ],
      "name": "itemAt",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "nextKey",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_level",
          "type": "uint256"
        },
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        }
      ],
      "name": "node",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_level",
          "type": "uint256"
        },
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        },
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        }
      ],
      "name": "nodeAt",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint256[]",
          "name": "_values",
          "type": "uint256[]"
        },
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        }
      ],
      "name": "search",
      "outputs": [
        {
          "internalType": "uint256[]",
          "name": "keys",
          "type": "uint256[]"
        },
        {
          "internalType": "uint256[]",
          "name": "values",
          "type": "uint256[]"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        },
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        },
        {
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "set",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "total",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        }
      ],
      "name": "totalAt",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "internalType": "uint256",
          "name": "_key",
          "type": "uint256"
        },
        {
          "internalType": "uint64",
          "name": "_time",
          "type": "uint64"
        },
        {
          "internalType": "uint256",
          "name": "_delta",
          "type": "uint256"
        },
        {
          "internalType": "bool",
          "name": "_positive",
          "type": "bool"
        }
      ],
      "name": "update",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ]
}