[
  {
    "type": "constructor",
    "inputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "append",
    "inputs": [
      {
        "name": "page",
        "type": "uint32",
        "internalType": "uint32"
      },
      {
        "name": "kind",
        "type": "uint8",
        "internalType": "uint8"
      },
      {
        "name": "cipher",
        "type": "bytes",
        "internalType": "bytes"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "factory",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "initialize",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "seq",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "usedPage",
    "inputs": [
      {
        "name": "",
        "type": "uint32",
        "internalType": "uint32"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bool",
        "internalType": "bool"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "event",
    "name": "Heard",
    "inputs": [
      {
        "name": "seq",
        "type": "uint64",
        "indexed": true,
        "internalType": "uint64"
      },
      {
        "name": "writer",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "page",
        "type": "uint32",
        "indexed": false,
        "internalType": "uint32"
      },
      {
        "name": "kind",
        "type": "uint8",
        "indexed": false,
        "internalType": "uint8"
      },
      {
        "name": "cipher",
        "type": "bytes",
        "indexed": false,
        "internalType": "bytes"
      }
    ],
    "anonymous": false
  },
  {
    "type": "error",
    "name": "AlreadyInitialized",
    "inputs": []
  },
  {
    "type": "error",
    "name": "CipherTooLarge",
    "inputs": [
      {
        "name": "length",
        "type": "uint256",
        "internalType": "uint256"
      }
    ]
  },
  {
    "type": "error",
    "name": "EmptyCipher",
    "inputs": []
  },
  {
    "type": "error",
    "name": "PageUsed",
    "inputs": [
      {
        "name": "page",
        "type": "uint32",
        "internalType": "uint32"
      }
    ]
  }
]