# Extends the mainnet preset
PRESET_BASE: mainnet
CONFIG_NAME: testnet # needs to exist because of Prysm. Otherwise it conflicts with mainnet genesis

# Genesis
# ---------------------------------------------------------------
MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 64
# 2026-Apr-09 07:00:00 PM UTC
MIN_GENESIS_TIME: 1775761200
GENESIS_FORK_VERSION: 0x1000101b
GENESIS_DELAY: 600


# 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: 0x2000101b
ALTAIR_FORK_EPOCH: 0
# Merge
BELLATRIX_FORK_VERSION: 0x3000101b
BELLATRIX_FORK_EPOCH: 0
TERMINAL_TOTAL_DIFFICULTY: 0
TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615

# Capella
CAPELLA_FORK_VERSION: 0x4000101b
CAPELLA_FORK_EPOCH: 0

# DENEB
DENEB_FORK_VERSION: 0x5000101b
DENEB_FORK_EPOCH: 0

# Electra
ELECTRA_FORK_VERSION: 0x6000101b
ELECTRA_FORK_EPOCH: 0

# Fulu
FULU_FORK_VERSION: 0x7000101b
FULU_FORK_EPOCH: 0

# Time parameters
# ---------------------------------------------------------------
# 12 seconds
SECONDS_PER_SLOT: 12
SECONDS_PER_ETH1_BLOCK: 12
# 2**8 (= 256) epochs ~27 hours
MIN_VALIDATOR_WITHDRAWABILITY_DELAY: 256
# 2**8 (= 256) epochs ~27 hours
SHARD_COMMITTEE_PERIOD: 256
ETH1_FOLLOW_DISTANCE: 12
# The period of time after which the network resets
EPHEMERY_RESET_PERIOD: 2419200

# Validator cycle
# ---------------------------------------------------------------
# 2**2 (= 4)
INACTIVITY_SCORE_BIAS: 4
# 2**4 (= 16)
INACTIVITY_SCORE_RECOVERY_RATE: 16
EJECTION_BALANCE: 30000000000
# 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
# ---------------------------------------------------------------
DEPOSIT_CHAIN_ID: 39438158
DEPOSIT_NETWORK_ID: 39438158
DEPOSIT_CONTRACT_ADDRESS: 0x00000000219ab540356cBB839Cbe05303d7705Fa

# Networking
# ---------------------------------------------------------------
# `10 * 2**20` (= 10485760, 10 MiB)
MAX_PAYLOAD_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
# 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**6 (= 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
# `2**12` (= 4096 epochs, ~18 days)
MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS: 4096
# `6`
BLOB_SIDECAR_SUBNET_COUNT: 6
## `uint64(6)`
MAX_BLOBS_PER_BLOCK: 6
# MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK
MAX_REQUEST_BLOB_SIDECARS: 768

# Electra
# 2**7 * 10**9 (= 128,000,000,000)
MIN_PER_EPOCH_CHURN_LIMIT_ELECTRA: 128000000000
# 2**8 * 10**9 (= 256,000,000,000)
MAX_PER_EPOCH_ACTIVATION_EXIT_CHURN_LIMIT: 256000000000
BLOB_SIDECAR_SUBNET_COUNT_ELECTRA: 9
MAX_BLOBS_PER_BLOCK_ELECTRA: 9
# MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK_ELECTRA
MAX_REQUEST_BLOB_SIDECARS_ELECTRA: 1152

# Fulu
NUMBER_OF_COLUMNS: 128
NUMBER_OF_CUSTODY_GROUPS: 128
DATA_COLUMN_SIDECAR_SUBNET_COUNT: 128
MAX_REQUEST_DATA_COLUMN_SIDECARS: 16384
SAMPLES_PER_SLOT: 8
CUSTODY_REQUIREMENT: 4
VALIDATOR_CUSTODY_REQUIREMENT: 8
BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096

BLOB_SCHEDULE:
  - EPOCH: 2048
    MAX_BLOBS_PER_BLOCK: 12
  - EPOCH: 4096
    MAX_BLOBS_PER_BLOCK: 15