{
  "genesisGasLimit": {
    "v": 5000,
    "d": "Gas limit of the Genesis block."
  },
  "genesisDifficulty": {
    "v": 17179869184,
    "d": "Difficulty of the Genesis block."
  },
  "genesisNonce": {
    "v": "0x0000000000000042",
    "d": "the geneis nonce"
  },
  "genesisExtraData": {
    "v": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
    "d": "extra data "
  },
  "genesisHash": {
    "v": "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3",
    "d": "genesis hash"
  },
  "genesisStateRoot": {
    "v": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544",
    "d": "the genesis state root"
  },
  "minGasLimit": {
    "v": 5000,
    "d": "Minimum the gas limit may ever be."
  },
  "gasLimitBoundDivisor": {
    "v": 1024,
    "d": "The bound divisor of the gas limit, used in update calculations."
  },
  "minimumDifficulty": {
    "v": 131072,
    "d": "The minimum that the difficulty may ever be."
  },
  "difficultyBoundDivisor": {
    "v": 2048,
    "d": "The bound divisor of the difficulty, used in the update calculations."
  },
  "durationLimit": {
    "v": 13,
    "d": "The decision boundary on the blocktime duration used to determine whether difficulty should go up or not."
  },
  "maximumExtraDataSize": {
    "v": 32,
    "d": "Maximum size extra data may be after Genesis."
  },
  "epochDuration": {
    "v": 30000,
    "d": "Duration between proof-of-work epochs."
  },
  "stackLimit": {
    "v": 1024,
    "d": "Maximum size of VM stack allowed."
  },
  "callCreateDepth": {
    "v": 1024,
    "d": "Maximum depth of call/create stack."
  },

  "tierStepGas": {
    "v": [0, 2, 3, 5, 8, 10, 20],
    "d": "Once per operation, for a selection of them."
  },
  "expGas": {
    "v": 10,
    "d": "Once per EXP instuction."
  },
  "expByteGas": {
    "v": 50,
    "d": "Times ceil(log256(exponent)) for the EXP instruction."
  },

  "sha3Gas": {
    "v": 30,
    "d": "Once per SHA3 operation."
  },
  "sha3WordGas": {
    "v": 6,
    "d": "Once per word of the SHA3 operation's data."
  },
  "sloadGas": {
    "v": 50,
    "d": "Once per SLOAD operation."
  },
  "sstoreSetGas": {
    "v": 20000,
    "d": "Once per SSTORE operation if the zeroness changes from zero."
  },
  "sstoreResetGas": {
    "v": 5000,
    "d": "Once per SSTORE operation if the zeroness does not change from zero."
  },
  "sstoreRefundGas": {
    "v": 15000,
    "d": "Once per SSTORE operation if the zeroness changes to zero."
  },
  "jumpdestGas": {
    "v": 1,
    "d": "Refunded gas, once per SSTORE operation if the zeroness changes to zero."
  },

  "logGas": {
    "v": 375,
    "d": "Per LOG* operation."
  },
  "logDataGas": {
    "v": 8,
    "d": "Per byte in a LOG* operation's data."
  },
  "logTopicGas": {
    "v": 375,
    "d": "Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas."
  },

  "createGas": {
    "v": 32000,
    "d": "Once per CREATE operation & contract-creation transaction."
  },

  "callGas": {
    "v": 40,
    "d": "Once per CALL operation & message call transaction."
  },
  "callStipend": {
    "v": 2300,
    "d": "Free gas given at beginning of call."
  },
  "callValueTransferGas": {
    "v": 9000,
    "d": "Paid for CALL when the value transfor is non-zero."
  },
  "callNewAccountGas": {
    "v": 25000,
    "d": "Paid for CALL when the destination address didn't exist prior."
  },

  "suicideRefundGas": {
    "v": 24000,
    "d": "Refunded following a suicide operation."
  },

  "memoryGas": {
    "v": 3,
    "d": "Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL."
  },
  "quadCoeffDiv": {
    "v": 512,
    "d": "Divisor for the quadratic particle of the memory cost equation."
  },

  "createDataGas": {
    "v": 200,
    "d": ""
  },
  "txGas": {
    "v": 21000,
    "d": "Per transaction. NOTE: Not payable on data of calls between transactions."
  },
  "txCreation": {
    "v": 32000,
    "d": "the cost of creating a contract via tx"
  },
  "txDataZeroGas": {
    "v": 4,
    "d": "Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions."
  },
  "txDataNonZeroGas": {
    "v": 68,
    "d": "Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions."
  },

  "copyGas": {
    "v": 3,
    "d": "Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added."
  },

  "ecrecoverGas": {
    "v": 3000,
    "d": ""
  },
  "sha256Gas": {
    "v": 60,
    "d": ""
  },
  "sha256WordGas": {
    "v": 12,
    "d": ""
  },
  "ripemd160Gas": {
    "v": 600,
    "d": ""
  },
  "ripemd160WordGas": {
    "v": 120,
    "d": ""
  },
  "identityGas": {
    "v": 15,
    "d": ""
  },
  "identityWordGas": {
    "v": 3,
    "d": ""
  },
  "modexpGquaddivisor": {
    "v": 20,
    "d": "Gquaddivisor from modexp precompile for gas calculation."
  },
  "ecAddGas": {
    "v": 500,
    "d": "Gas costs for curve addition precompile."
  },
  "ecMulGas": {
    "v": 40000,
    "d": "Gas costs for curve multiplication precompile."
  },
  "ecPairingGas": {
    "v": 100000,
    "d": "Base gas costs for curve pairing precompile."
  },
  "ecPairingWordGas": {
    "v": 80000,
    "d": "Gas costs regarding curve pairing precompile input length."
  },
  "minerReward": {
    "v": "3000000000000000000",
    "d": "the amount a miner get rewarded for mining a block"
  },
  "homeSteadForkNumber": {
    "v": 1150000,
    "d": "the block that the Homestead fork started at"
  },
  "homesteadRepriceForkNumber": {
    "v": 2463000,
    "d": "the block that the Homestead Reprice (EIP150) fork started at"
  },
  "timebombPeriod": {
    "v": 100000,
    "d": "Exponential difficulty timebomb period"
  },
  "freeBlockPeriod": {
    "v": 2
  }
}