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

142 lines
4.6 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
# Standard library
math,
# Third-party
eth/common,
# Internals
../crypto, ../digest
type
Slot* = distinct uint64
Epoch* = distinct uint64
{.experimental: "codeReordering".} # SLOTS_PER_EPOCH is use before being defined in spec
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/configs/constant_presets/minimal.yaml
const
# Misc
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#misc
# Changed
SHARD_COUNT* {.intdefine.} = 8
TARGET_COMMITTEE_SIZE* = 4
# Unchanged
MAX_INDICES_PER_ATTESTATION* = 4096
MIN_PER_EPOCH_CHURN_LIMIT* = 4
CHURN_LIMIT_QUOTIENT* = 2^16
BASE_REWARDS_PER_EPOCH* = 5
# Changed
SHUFFLE_ROUND_COUNT* = 10
# Deposit contract
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#deposit-contract
# Unchanged
DEPOSIT_CONTRACT_TREE_DEPTH* = 32
# Gwei values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#gwei-values
# 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/v0.7.1/configs/constant_presets/minimal.yaml#L43
# Unchanged
GENESIS_FORK_VERSION* = [0'u8, 0'u8, 0'u8, 0'u8]
GENESIS_SLOT* = 0.Slot
FAR_FUTURE_EPOCH* = (not 0'u64).Epoch # 2^64 - 1 in spec
BLS_WITHDRAWAL_PREFIX* = 0'u8
# Time parameters
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_fork-choice.md#time-parameters
# Unchanged
SECONDS_PER_SLOT*{.intdefine.} = 6'u64
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#time-parameters
# Unchanged
MIN_ATTESTATION_INCLUSION_DELAY* = 2'u64^2
# Changed
SLOTS_PER_EPOCH* {.intdefine.} = 64
# Unchanged
MIN_SEED_LOOKAHEAD* = 1
ACTIVATION_EXIT_DELAY* = 4
# Changed
SLOTS_PER_ETH1_VOTING_PERIOD* = 16
SLOTS_PER_HISTORICAL_ROOT* = 128 # 64 doesn't work with GENESIS_SLOT == 0?
# Unchanged
MIN_VALIDATOR_WITHDRAWABILITY_DELAY* = 2'u64^8
PERSISTENT_COMMITTEE_PERIOD* = 2'u64^11
MAX_CROSSLINK_EPOCHS* = 2'u64^6
MIN_EPOCHS_TO_INACTIVITY_PENALTY* = 2'u64^2
# State list lengths
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#state-list-lengths
# Changed
LATEST_RANDAO_MIXES_LENGTH* = 64
LATEST_ACTIVE_INDEX_ROOTS_LENGTH* = 64
LATEST_SLASHED_EXIT_LENGTH* = 64
# Reward and penalty quotients
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#rewards-and-penalties
# Unchanged
BASE_REWARD_FACTOR* = 2'u64^5
WHISTLEBLOWING_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/v0.7.1/specs/core/0_beacon-chain.md#max-operations-per-block
# Unchanged
MAX_PROPOSER_SLASHINGS* = 2^4
MAX_ATTESTER_SLASHINGS* = 2^0
MAX_ATTESTATIONS* = 2^7
MAX_DEPOSITS* = 2^4
MAX_VOLUNTARY_EXITS* = 2^4
MAX_TRANSFERS* = 0
type
# Signature domains
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.1/specs/core/0_beacon-chain.md#signature-domains
SignatureDomain* {.pure.} = enum
DOMAIN_BEACON_PROPOSER = 0
DOMAIN_RANDAO = 1
DOMAIN_ATTESTATION = 2
DOMAIN_DEPOSIT = 3
DOMAIN_VOLUNTARY_EXIT = 4
DOMAIN_TRANSFER = 5