Constant Values
Gwei values
| Name |
Value |
MIN_DEPOSIT_AMOUNT |
Gwei(2**0 * 10**9) (= 1,000,000,000) |
MAX_EFFECTIVE_BALANCE |
Gwei(2**5 * 10**9) (= 32,000,000,000) |
EFFECTIVE_BALANCE_INCREMENT |
Gwei(2**0 * 10**9) (= 1,000,000,000) |
Time parameters
| Name |
Value |
Unit |
Duration |
MIN_ATTESTATION_INCLUSION_DELAY |
uint64(2**0) (= 1) |
slots |
12 seconds |
SLOTS_PER_EPOCH |
uint64(2**5) (= 32) |
slots |
6.4 minutes |
MIN_SEED_LOOKAHEAD |
uint64(2**0) (= 1) |
epochs |
6.4 minutes |
MAX_SEED_LOOKAHEAD |
uint64(2**2) (= 4) |
epochs |
25.6 minutes |
MIN_EPOCHS_TO_INACTIVITY_PENALTY |
uint64(2**2) (= 4) |
epochs |
25.6 minutes |
EPOCHS_PER_ETH1_VOTING_PERIOD |
uint64(2**6) (= 64) |
epochs |
~6.8 hours |
SLOTS_PER_HISTORICAL_ROOT |
uint64(2**13) (= 8,192) |
slots |
~27 hours |
Time parameters
| Name |
Value |
Unit |
Duration |
SECONDS_PER_SLOT |
uint64(12) |
seconds |
12 seconds |
SECONDS_PER_ETH1_BLOCK |
uint64(14) |
seconds |
14 seconds |
MIN_VALIDATOR_WITHDRAWABILITY_DELAY |
uint64(2**8) (= 256) |
epochs |
~27 hours |
SHARD_COMMITTEE_PERIOD |
uint64(2**8) (= 256) |
epochs |
~27 hours |
ETH1_FOLLOW_DISTANCE |
uint64(2**11) (= 2,048) |
Eth1 blocks |
~8 hours |
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#misc
FAR_FUTURE_EPOCH = 2 ** 64 - 1
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#time-parameters-1
MIN_VALIDATOR_WITHDRAWABILITY_DELAY = 2**8
SHARD_COMMITTEE_PERIOD = 256
MAX_SEED_LOOKAHEAD = 4
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#state-list-lengths
EPOCHS_PER_SLASHINGS_VECTOR = 2**13
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#rewards-and-penalties
PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX = 3
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#gwei-values
EFFECTIVE_BALANCE_INCREMENT = 2 ** 0 * 10 ** 9
MAX_EFFECTIVE_BALANCE = 32 * 10 ** 9
# https://github.com/ethereum/consensus-specs/blob/dev/specs/capella/beacon-chain.md#execution
MAX_WITHDRAWALS_PER_PAYLOAD = 2 ** 4
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#withdrawal-prefixes
ETH1_ADDRESS_WITHDRAWAL_PREFIX = '0x01'
# https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#validator-cycle
MIN_PER_EPOCH_CHURN_LIMIT = 2 ** 2
CHURN_LIMIT_QUOTIENT = 2 ** 16
# Local constants
GWEI_TO_WEI = 10 ** 9
SHARE_RATE_PRECISION_E27 = 10**27
TOTAL_BASIS_POINTS = 10000
MAX_BLOCK_GAS_LIMIT = 30_000_000