# Genesis The `genesis.json` file defines the initial state of the Cronos Chain. On top of the standard [tendermint genesis](https://docs.tendermint.com/v0.33/tendermint-core/using-tendermint.html#genesis) format, we customize our own genesis file that includes different [modules](https://docs.cronos.org/~/changes/a4CtpNfKT3gnzLfuEveQ/cronos-chain-protocol/module_overview) and facilitates the special features of the Cronos Chain. Sample genesis file can be found [here](https://github.com/crypto-org-chain/cronos-mainnet/blob/master/cronosmainnet_25-1/genesis.json). ## Fields in genesis Specifically, the genesis file includes the following fields: * `"genesis_time"`: The time of the beginning of the blockchain. * `"genutil"`: A variety of genesis utility functionality for usage including genesis transactions creation (gentx) and genesis file validation command as well as Tendermint related initialization. * `"ibc"`: Inter-Blockchain Communication across different chains. * `"chain_id"`: A unique identifier for the blockchain. See [this](https://docs.cronos.org/~/changes/416/cronos-chain-protocol/chain-id) for further details. * `"initial_height"`: The initial height of the blockchain. * `"consensus_params`: Consensus parameters defined in the genesis file. * `"block"`: * `"max_bytes"`: Maximum size of a block (in bytes). * `"max_gas"`: The gas limit per block, default value is "-1", i.e., no rules about gas are enforced. * `"time_iota_ms"`: The minimum time increment between consecutive blocks, in milliseconds. * `"evidence"`: Evidence storage handling and block proposal detection with the evidence reactor. * `"max_age_num_blocks"`: *This field is to be deprecated.* * `"max_age_duration"`: The maximum age of evidence. Any evidence older than this will be rejected. * `"max_num"`: The maximum age of evidence (in number of blocks). * `"validator"`: * `"pub_key_types"`: The supported validator public key types. * `"app_hash"`: The initial application state defined in the genesis block. * `"auth"` * `"params"`: Parameters of the auth module defined in the genesis file. * `"max_memo_characters"`: Maximum number of characters in a memo of a transaction. * `"tx_sig_limit"`: The maximum number of signers for a transaction. * `"tx_size_cost_per_byte"`: The amount of gas consumed per byte of a transaction. * `"sig_verify_cost_ed25519"`: Gas cost on `edd2519` signature verification. * `"sig_verify_cost_secp256k1"`: Gas cost on `secp256k1` signature verification. * `"accounts"`: Genesis accounts, which defines the initial allocation of the tokens. * `"@type"`: Account type. * `"address"`: Address of the genesis accounts. * `"pub_key"`: Public key of the genesis accounts. * `"account_number"`: The account number of the account in state. * `"sequence"`: Used to count the number of transactions sent by this account. It is incremented each time a transaction is included in a block, and used to prevent replay attacks. * `"base_vesting_account"`: * `"original_vesting"`: Special type of accounting that the token needs to be vested for a period of time before they can be transferred. Tokens can be delegated during the vesting period. * `"denom"`: Denomination of the token. * `"amount"`: Total amount in the vesting account. * `"delegated_free"`: Amount of delegated tokens that can be transferred after they've been vested. * `"delegated_vesting"`: Amount of delegated tokens that are still under vesting. * `"endtime"`: Vesting end time. * `"bank"` The bank module handles tokens. * `"params"`: Parameters of the bank module defined in the genesis file. * `"send_enabled"`: The transfer capability in the genesis. * `"default_send_enabled"`: The default value for "send\_enabled" value controls send transfer capability. * `"distribution"`:The module that handles the logic of distribution block provisions and fees to validators and delegators. * `"delegator_starting_infos"`: * `"delegator_withdraw_infos"`: List of delegators withdraw address. * `"fee_pool"`: * `"community_pool"`: Allocated funds in the community pool, if any. * `"outstanding_rewards"`: Uncollected rewards, if any. * `"params"`: Parameters of the distribution module defined in the genesis file. * `"base_proposer_reward"`: Base bonus on transaction fees collected in a valid block. * `"bonus_proposer_reward"`: Maximum bonus on transaction fees collected in a valid block. * `"community_tax"`: The rate of community tax. * `"withdraw_addr_enabled"`: Whether delegators can set a different address to withdraw their rewards. * `"previous_proposer"`: Proposer of the previous block, if any. * `"validator_accumulated_commissions"`: Uncollected commission of validators, if any. * `"validator_current_rewards"`: Information related to the current rewards of validators, if any. * `"validator_historical_rewards"`: Information related to the historical rewards of validators, if any. * `"validator_slash_events"`: Information related to the historical slashing events of validators, if any. * `"gov"`: The governance module. * `"deposit_params"`: Parameters for the deposit required for governance proposal. * `"max_deposit_period"`: The maximum deposit period for governance proposal. * `"min_deposit"`: The minimum deposit required for governance proposal. * `"deposits"`: List of deposits for each proposal ID, if any. * `"proposals"`: List of proposals for proposals, if any. * `"starting_proposal_id"`: The initial proposals id, starting from `"1"` * `"tally_params"`: Parameters for tally. * `"quorum"`: Minimum percentage of bonded staking tokens that needs to vote for the result to be valid. * `"threshold"`: Minimum percentage of votes that need to be `YES` for the result to be valid. * `"veto_threshold"`: Maximum percentage `NO_WITH_VETO` votes for the result to be valid. * `"votes"`: List of votes for each proposal ID, if any. * `"voting_params"`: Parameters for voting. * `"voting_period"`: The voting period for governance proposal. * `"mint"`: The minting module for token minting. * `"minter"`: * `"annual_provisions"`: Annual expected provisions (set to zero in genesis). * `"inflation"`: The target yearly inflation rate, compounded weekly. * `"params":` Parameters of the mint module defined in the genesis file. * `"blocks_per_year"`: The expected number of blocks being produced per year. * `"goal_bonded"`: Target bonded token in percentage. * `"inflation_max"`: Maximum inflation rate. * `"inflation_min"`: Minimum inflation rate. * `"inflation_rate_change"`: Maximum annual change in inflation rate. * `"mint_denom"`: Token type being minted. * `"slashing"`: The slashing module for the punishment of validator's misbehavior. * `"missed_blocks"`: Information related to validators missed blocks, if any. * `"params"`: Parameters of the slashing module defined in the genesis file. * `"downtime_jail_duration"`: The jailing duration for validators with low availability. * `"min_signed_per_window"`: Threshold of total missed blocks, in percentage. * `"signed_blocks_window"`: Window to calculate validators's liveness. * `"slash_fraction_double_sign"`: Maximum percentage of stake reduction for byzantine validators. * `"slash_fraction_downtime"`: Maximum percentage of stake reduction for validators with low availability. * `"signing_infos"`: Information related to each validator for the slashing module, if any. * `"staking"`: The staking module that handles Proof-of-Stake related logics. * `"delegations"`: Information related to the delegation state of validators, if any. * `"exported"`: Whether this genesis file was generated by exporting of a previous state. * `"last_total_power"`: Total voting power in the genesis, if any. * `"last_validator_powers"`: The voting power of each validator in last known state, if any. * `"params"`: Parameters of the staking module defined in the genesis file. * `"bond_denom"`: Coin denomination for staking. * `"historical_entries"`: The number of historical entries to persist. * `"max_entries"`: The max entries for either unbonding delegation or redelegation. * `"max_validators"`: The maximum number of validator. * `"unbonding_time"`: The time duration of unbonding. * `"redelegations"`: List of redelegations for validators, if any. * `"unbonding_delegations"`: List of unbonding delegations for validators, if any. * `"validators"`: List of existing validators, if any. * `"transfer"`: The transfer module that handles token transfer transactions. * `"receive_enabled"`: An array of Receive enabled entries mapping coin denominations to their `receive_enabled` status. * `"send_enabled"`: An array of SendEnabled entries mapping coin denominations to their `send_enabled` status. * `"evm"`: Ethereum Virtual Machine * `"evm_denom"`: The token denomination used on the EVM state transitions and gas consumption for EVM messages. * `"enable_create"`: Toggles state transitions that use the `vm.Create` function, and it prevents all contract creation functionality if it is disabled. * `"enable_call"`: Toggles state transitions that use the `vm.Call` function, and it prevents transfers between accounts and executing a smart contract call if it is disabled. * `"extra_eips"`: The set of activateable Ethereum Improvement Proposals (EIPs) on the Ethereum VM Config that apply custom jump tables.