nimbus-eth2/beacon_chain/spec/presets/minimal.nim

133 lines
4.1 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2019 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
# This file contains constants that are part of the spec and thus subject to
# serialization and spec updates.
import
math
type
Slot* = distinct uint64
Epoch* = distinct uint64
{.experimental: "codeReordering".} # SLOTS_PER_EPOCH is use before being defined in spec
const
# Misc
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L4
# Changed
MAX_COMMITTEES_PER_SLOT* = 4
TARGET_COMMITTEE_SIZE* = 4
# Unchanged
MAX_VALIDATORS_PER_COMMITTEE* = 2048
MIN_PER_EPOCH_CHURN_LIMIT* = 4
CHURN_LIMIT_QUOTIENT* = 2^16
# Changed
SHUFFLE_ROUND_COUNT* = 10
MIN_GENESIS_ACTIVE_VALIDATOR_COUNT* {.intdefine.} = 64
MIN_GENESIS_TIME* {.intdefine.} = 0
# Constants
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/specs/core/0_beacon-chain.md#constants
# TODO "The following values are (non-configurable) constants" ...
# Unchanged
BASE_REWARDS_PER_EPOCH* = 4
DEPOSIT_CONTRACT_TREE_DEPTH* = 32
# Gwei values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L32
# Unchanged
MIN_DEPOSIT_AMOUNT* = 2'u64^0 * 10'u64^9
MAX_EFFECTIVE_BALANCE* = 2'u64^5 * 10'u64^9
EJECTION_BALANCE* = 2'u64^4 * 10'u64^9
EFFECTIVE_BALANCE_INCREMENT* = 2'u64^0 * 10'u64^9
# Initial values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L44
# Unchanged
GENESIS_SLOT* = 0.Slot
BLS_WITHDRAWAL_PREFIX* = 0'u8
# Time parameters
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.0/configs/minimal.yaml#L51
# Unchanged
SECONDS_PER_SLOT*{.intdefine.} = 6'u64
# Unchanged
MIN_ATTESTATION_INCLUSION_DELAY* = 1
# Changed
SLOTS_PER_EPOCH* {.intdefine.} = 8
# Unchanged
MIN_SEED_LOOKAHEAD* = 1
MAX_SEED_LOOKAHEAD* = 4
# Changed
SLOTS_PER_ETH1_VOTING_PERIOD* = 16
SLOTS_PER_HISTORICAL_ROOT* = 64
# Unchanged
MIN_VALIDATOR_WITHDRAWABILITY_DELAY* = 2'u64^8
PERSISTENT_COMMITTEE_PERIOD* = 2'u64^11
MAX_EPOCHS_PER_CROSSLINK* = 4
MIN_EPOCHS_TO_INACTIVITY_PENALTY* = 2'u64^2
# State vector lengths
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L83
# Changed
EPOCHS_PER_HISTORICAL_VECTOR* = 64
EPOCHS_PER_SLASHINGS_VECTOR* = 64
HISTORICAL_ROOTS_LIMIT* = 16777216
VALIDATOR_REGISTRY_LIMIT* = 1099511627776
# Reward and penalty quotients
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L95
BASE_REWARD_FACTOR* = 2'u64^6
WHISTLEBLOWER_REWARD_QUOTIENT* = 2'u64^9
PROPOSER_REWARD_QUOTIENT* = 2'u64^3
INACTIVITY_PENALTY_QUOTIENT* = 2'u64^25
MIN_SLASHING_PENALTY_QUOTIENT* = 32 # 2^5
# Max operations per block
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/configs/minimal.yaml#L109
MAX_PROPOSER_SLASHINGS* = 2^4
MAX_ATTESTER_SLASHINGS* = 2^0
MAX_ATTESTATIONS* = 2^7
MAX_DEPOSITS* = 2^4
MAX_VOLUNTARY_EXITS* = 2^4
type
# Domains
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.9.1/specs/core/0_beacon-chain.md#domain-types
DomainType* {.pure.} = enum
DOMAIN_BEACON_PROPOSER = 0
DOMAIN_BEACON_ATTESTER = 1
DOMAIN_RANDAO = 2
DOMAIN_DEPOSIT = 3
DOMAIN_VOLUNTARY_EXIT = 4