# System Configuration chapter introduces the Bool Network chain parameters to facilitate developers or users to better understand the system. ### Basic Chain Variable Parameters

Variable	Beta Mainnet Value	Beta Testnet Value
Block Time	6 s	3 s
Chain Name	BoolNetwork Beta Mainnet	BoolNetwork Beta Testnet
Token Symbol	BOL	tBOL
Token Decimals	18	18
Total Issuance	1 billion	1 billion
Protocol ID	boolnetwork_beta_mainnet	boolnetwork_beta_testnet
Maximum Block Weight	2000000000000	2000000000000
Block Gas Limit	60000000	60000000
Weight Per Gas	25000	25000
EVM Chain ID	11100	481
Gas fee ratio	50%-miner 20%-burn 30%-treasure	50%-miner 20%-burn 30%-treasure
Existential Deposit	0	0.0000000000000005

### Staking Variable Parameters

Variable	Beta Mainnet Value	Beta Testnet Value
Epoch Duration	100 block	200 block
Sessions Per Era	24	3
Epoch	10 min	10 min
Era	4 h	30 min
Bonding Duration	1 era	1 era
Maximum Nominations	16	16
Maximum Validators	100	100
Maximum Nominators	1000	1000
Minimum Validator Bond	100000 BOL	100000 tBOL
Minimum Validator Bond	100 BOL	200 tBOL

### DHC Variable Parameters

Variable	Beta Mainnet Value	Beta Testnet Value
Incentive Epoch Duration	300 block	600 block
Committee Epoch Blocks	200 block	800 block
Committee Apply Blocks	60 block	300 block
Committee Rvrf Blocks	60 block	100 block
Committee Change Blocks	60 block	300 block
Committee Slot Number	10	10
Committee Maximum Duplicate	3	3
Committee Maximum Members	15	15
Committee Minimum Members	5	5
Committee T,N ratio	gt 1 / 2	ge 2/3
Committee Service Fee	0.1 BOL	1 tBOL
Device Heartbeat Session	10 min	10 min
Device Reward Session	8 h	60 min
Device Minimum Mint Pledge	100000 BOL	20000 tBOL
Device Offline Punish	10 BOL	10 tBOL
Device Maximum Voter	200	3000
Device Force Exit Punish	1000 BOL	1000 tBOL
Device Force Exit Waiting	100 min	100 min
Device Maximum Exit Waiting	1 day	1 day
Device Maximum No Heartbeat	20 min	20 min
Device Minimum Commission	15%	15%
Device Minimum Vote Bond	100 BOL	200 tBOL
Device Owner Minimum Bond	50000 BOL	10000 tBOL
Device Base Reward Rate	10%	10%
Device Minimum Exit Bond Rate	95%	80%
Device Unlock Time	1 day	1 day
Device Base Score	1000000000000	1000
Device Advanced Score	2000000000000	2000

### Govern Variable Parameters

Variable	Beta Mainnet Value	Beta Testnet Value
Govern Preimage Base Deposit	10000 BOL	10000 tBOL
Govern Preimage Byte Deposit	0.001 BOL	0.001 tBOL
Govern Proposal Bond	5 Permill	5 Permill
Govern Proposal Bond Minimum	1 BOL	1 tBOL
Govern Spend Period	1 day	1 day
Govern Maximum Approvals	100	100
Govern Spend Payout Period	30 days	30 days
Referenda Submission Deposit	100 BOL	100 tBOL
Referenda Alarm Interval	1 block	1 block
Referenda Undeciding Timeout	28 days	28 days
Referenda Maximum Queued	100	100
Conviction Vote Locking Period	30 days	30 days
Conviction Maximum Votes	512	512
Treasury Motion Duration	3 days	3 days
Treasury Maximum Proposals	20	20
Treasury Maximum Members	9	9
Treasury Motion Duration	14 days	14 days
Treasury Maximum Proposals	100	100
Treasury Maximum Members	100	100

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