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mainnet.yaml
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# Mainnet config
# Extends the mainnet preset
PRESET_BASE: 'mainnet'
# Free-form short name of the network that this configuration applies to - known
# canonical network names include:
# * 'mainnet' - there can be only one
# * 'prater' - testnet
# Must match the regex: [a-z0-9\-]
CONFIG_NAME: 'mainnet'
# Transition
# ---------------------------------------------------------------
# Estimated on Sept 15, 2022
TERMINAL_TOTAL_DIFFICULTY: 58750000000000000000000
# By default, don't use these params
TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
# Genesis
# ---------------------------------------------------------------
# `2**14` (= 16,384)
MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 16384
# Dec 1, 2020, 12pm UTC
MIN_GENESIS_TIME: 1606824000
# Mainnet initial fork version, recommend altering for testnets
GENESIS_FORK_VERSION: 0x00000000
# 604800 seconds (7 days)
GENESIS_DELAY: 604800
# Forking
# ---------------------------------------------------------------
# Some forks are disabled for now:
# - These may be re-assigned to another fork-version later
# - Temporarily set to max uint64 value: 2**64 - 1
# Altair
ALTAIR_FORK_VERSION: 0x01000000
ALTAIR_FORK_EPOCH: 74240 # Oct 27, 2021, 10:56:23am UTC
# Bellatrix
BELLATRIX_FORK_VERSION: 0x02000000
BELLATRIX_FORK_EPOCH: 144896 # Sept 6, 2022, 11:34:47am UTC
# Capella
CAPELLA_FORK_VERSION: 0x03000000
CAPELLA_FORK_EPOCH: 194048 # April 12, 2023, 10:27:35pm UTC
# Deneb
DENEB_FORK_VERSION: 0x04000000
DENEB_FORK_EPOCH: 18446744073709551615
# EIP6110
EIP6110_FORK_VERSION: 0x05000000 # temporary stub
EIP6110_FORK_EPOCH: 18446744073709551615
# EIP7002
EIP7002_FORK_VERSION: 0x05000000 # temporary stub
EIP7002_FORK_EPOCH: 18446744073709551615
# WHISK
WHISK_FORK_VERSION: 0x06000000 # temporary stub
WHISK_FORK_EPOCH: 18446744073709551615
# Time parameters
# ---------------------------------------------------------------
# 12 seconds
SECONDS_PER_SLOT: 12
# 14 (estimate from Eth1 mainnet)
SECONDS_PER_ETH1_BLOCK: 14
# 2**8 (= 256) epochs ~27 hours
MIN_VALIDATOR_WITHDRAWABILITY_DELAY: 256
# 2**8 (= 256) epochs ~27 hours
SHARD_COMMITTEE_PERIOD: 256
# 2**11 (= 2,048) Eth1 blocks ~8 hours
ETH1_FOLLOW_DISTANCE: 2048
# Validator cycle
# ---------------------------------------------------------------
# 2**2 (= 4)
INACTIVITY_SCORE_BIAS: 4
# 2**4 (= 16)
INACTIVITY_SCORE_RECOVERY_RATE: 16
# 2**4 * 10**9 (= 16,000,000,000) Gwei
EJECTION_BALANCE: 16000000000
# 2**2 (= 4)
MIN_PER_EPOCH_CHURN_LIMIT: 4
# 2**16 (= 65,536)
CHURN_LIMIT_QUOTIENT: 65536
# [New in Deneb:EIP7514] 2**3 (= 8)
MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT: 8
# Fork choice
# ---------------------------------------------------------------
# 40%
PROPOSER_SCORE_BOOST: 40
# 20%
REORG_HEAD_WEIGHT_THRESHOLD: 20
# 160%
REORG_PARENT_WEIGHT_THRESHOLD: 160
# `2` epochs
REORG_MAX_EPOCHS_SINCE_FINALIZATION: 2
# Deposit contract
# ---------------------------------------------------------------
# Ethereum PoW Mainnet
DEPOSIT_CHAIN_ID: 1
DEPOSIT_NETWORK_ID: 1
DEPOSIT_CONTRACT_ADDRESS: 0x00000000219ab540356cBB839Cbe05303d7705Fa
# Networking
# ---------------------------------------------------------------
# `10 * 2**20` (= 10485760, 10 MiB)
GOSSIP_MAX_SIZE: 10485760
# `2**10` (= 1024)
MAX_REQUEST_BLOCKS: 1024
# `2**8` (= 256)
EPOCHS_PER_SUBNET_SUBSCRIPTION: 256
# `MIN_VALIDATOR_WITHDRAWABILITY_DELAY + CHURN_LIMIT_QUOTIENT // 2` (= 33024, ~5 months)
MIN_EPOCHS_FOR_BLOCK_REQUESTS: 33024
# `10 * 2**20` (=10485760, 10 MiB)
MAX_CHUNK_SIZE: 10485760
# 5s
TTFB_TIMEOUT: 5
# 10s
RESP_TIMEOUT: 10
ATTESTATION_PROPAGATION_SLOT_RANGE: 32
# 500ms
MAXIMUM_GOSSIP_CLOCK_DISPARITY: 500
MESSAGE_DOMAIN_INVALID_SNAPPY: 0x00000000
MESSAGE_DOMAIN_VALID_SNAPPY: 0x01000000
# 2 subnets per node
SUBNETS_PER_NODE: 2
# 2**8 (= 64)
ATTESTATION_SUBNET_COUNT: 64
ATTESTATION_SUBNET_EXTRA_BITS: 0
# ceillog2(ATTESTATION_SUBNET_COUNT) + ATTESTATION_SUBNET_EXTRA_BITS
ATTESTATION_SUBNET_PREFIX_BITS: 6
# Deneb
# `2**7` (=128)
MAX_REQUEST_BLOCKS_DENEB: 128
# MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK
MAX_REQUEST_BLOB_SIDECARS: 768
# `2**12` (= 4096 epochs, ~18 days)
MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS: 4096
# `6`
BLOB_SIDECAR_SUBNET_COUNT: 6
# Whisk
# `Epoch(2**8)`
WHISK_EPOCHS_PER_SHUFFLING_PHASE: 256
# `Epoch(2)`
WHISK_PROPOSER_SELECTION_GAP: 2