nimbus-eth2/beacon_chain/spec/presets/v0_12_2/minimal.nim

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# beacon_chain
2020-01-27 11:36:17 +00:00
# Copyright (c) 2018-2020 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://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
{.experimental: "codeReordering".} # SLOTS_PER_EPOCH is use before being defined in spec
const
# Misc
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.1/configs/minimal.yaml#L4
# Changed
MAX_COMMITTEES_PER_SLOT*: uint64 = 4
TARGET_COMMITTEE_SIZE*: uint64 = 4
# Unchanged
MAX_VALIDATORS_PER_COMMITTEE*: uint64 = 2048
MIN_PER_EPOCH_CHURN_LIMIT*: uint64 = 4
CHURN_LIMIT_QUOTIENT*: uint64 = 2'u64 ^ 16
# Changed
SHUFFLE_ROUND_COUNT*: uint64 = 10
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# Unchanged
HYSTERESIS_QUOTIENT*: uint64 = 4
HYSTERESIS_DOWNWARD_MULTIPLIER*: uint64 = 1
HYSTERESIS_UPWARD_MULTIPLIER*: uint64 = 5
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# Gwei values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.1/configs/minimal.yaml#L58
# Unchanged
MIN_DEPOSIT_AMOUNT*: uint64 = 2'u64^0 * 10'u64^9
MAX_EFFECTIVE_BALANCE*: uint64 = 2'u64^5 * 10'u64^9
EJECTION_BALANCE*: uint64 = 2'u64^4 * 10'u64^9
EFFECTIVE_BALANCE_INCREMENT*: uint64 = 2'u64^0 * 10'u64^9
# Initial values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L73
BLS_WITHDRAWAL_PREFIX*: byte = 0
# Time parameters
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.1/configs/minimal.yaml#L77
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# Changed: Faster to spin up testnets, but does not give validator
# reasonable warning time for genesis
# Unchanged
SECONDS_PER_SLOT*{.intdefine.}: uint64 = 6
0.6.2 updates (#275) * update process_justification_and_finalization to 0.6.2; mark AttesterSlashing as 0.6.2 * replace get_effective_balance(...) with state.validator_registry[idx].effective_balance; rm get_effective_balance, process_ejections, should_update_validator_registry, update_validator_registry, and update_registry_and_shuffling_data; update get_total_balance to 0.6.2; implement process_registry_updates * rm exit_validator; implement is_slashable_attestation_data; partly update processAttesterSlashings * mark HistoricalBatch and Eth1Data as 0.6.2; implement get_shard_delta(...); replace 0.5 finish_epoch_update with 0.6 process_final_updates * mark increase_balance, decrease_balance, get_delayed_activation_exit_epoch, bls_aggregate_pubkeys, bls_verify_multiple, Attestation, Transfer, slot_to_epoch, Crosslink, get_current_epoch, int_to_bytes*, various constants, processEth1Data, processTransfers, and verifyStateRoot as 0.6.2; rm is_double_vote and is_surround_vote * mark get_bitfield_bit, verify_bitfield, ProposerSlashing, DepositData, VoluntaryExit, PendingAttestation, Fork, integer_squareroot, get_epoch_start_slot, is_active_validator, generate_seed, some constants to 0.6.2; rename MIN_PENALTY_QUOTIENT to MIN_SLASHING_PENALTY_QUOTIENT * rm get_previous_total_balance, get_current_epoch_boundary_attestations, get_previous_epoch_boundary_attestations, and get_previous_epoch_matching_head_attestations * update BeaconState to 0.6.2; simplify legacy get_crosslink_committees_at_slot infrastructure a bit by noting that registry_change is always false; reimplment 0.5 get_crosslink_committees_at_slot in terms of 0.6 get_crosslink_committee * mark process_deposit(...), get_block_root_at_slot(...), get_block_root(...), Deposit, BeaconBlockHeader, BeaconBlockBody, hash(...), get_active_index_root(...), various constants, get_shard_delta(...), get_epoch_start_shard(...), get_crosslink_committee(...), processRandao(...), processVoluntaryExits(...), cacheState(...) as 0.6.2 * rm removed-since-0.5 split(...), is_power_of_2(...), get_shuffling(...); rm 0.5 versions of get_active_validator_indices and get_epoch_committee_count; add a few tests for integer_squareroot * mark bytes_to_int(...) and advanceState(...) as 0.6.2 * rm 0.5 get_attesting_indices; update get_attesting_balance to 0.6.2 * another tiny commit to poke AppVeyor to maybe not timeout at connecting to GitHub partway through CI: mark get_churn_limit(...), initiate_validator_exit(...), and Validator as 0.6.2 * mark get_attestation_slot(...), AttestationDataAndCustodyBit, and BeaconBlock as 0.6.2
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# Unchanged
MIN_ATTESTATION_INCLUSION_DELAY*: uint64 = 1
# Changed
SLOTS_PER_EPOCH* {.intdefine.}: uint64 = 8
# Unchanged
MIN_SEED_LOOKAHEAD*: uint64 = 1
MAX_SEED_LOOKAHEAD*: uint64 = 4
# Changed
EPOCHS_PER_ETH1_VOTING_PERIOD*: uint64 = 4
SLOTS_PER_HISTORICAL_ROOT*: uint64 = 64
# Unchanged
MIN_VALIDATOR_WITHDRAWABILITY_DELAY*: uint64 = 2'u64^8
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SHARD_COMMITTEE_PERIOD*: uint64 = 64 # epochs
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# Unchanged
MAX_EPOCHS_PER_CROSSLINK*: uint64 = 4
# Changed
MIN_EPOCHS_TO_INACTIVITY_PENALTY*: uint64 = 2'u64^2
# State vector lengths
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L108
# Changed
EPOCHS_PER_HISTORICAL_VECTOR*: uint64 = 64
EPOCHS_PER_SLASHINGS_VECTOR*: uint64 = 64
# Unchanged
HISTORICAL_ROOTS_LIMIT*: uint64 = 16777216
VALIDATOR_REGISTRY_LIMIT*: uint64 = 1099511627776'u64
# Reward and penalty quotients
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L120
BASE_REWARD_FACTOR*: uint64 = 2'u64^6
WHISTLEBLOWER_REWARD_QUOTIENT*: uint64 = 2'u64^9
PROPOSER_REWARD_QUOTIENT*: uint64 = 2'u64^3
INACTIVITY_PENALTY_QUOTIENT*: uint64 = 2'u64^24
MIN_SLASHING_PENALTY_QUOTIENT*: uint64 = 32 # 2^5
# Max operations per block
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L134
MAX_PROPOSER_SLASHINGS*: uint64 = 2'u64 ^ 4
MAX_ATTESTER_SLASHINGS*: uint64 = 2'u64 ^ 1
MAX_ATTESTATIONS*: uint64 = 2'u64 ^ 7
MAX_DEPOSITS*: uint64 = 2'u64 ^ 4
MAX_VOLUNTARY_EXITS*: uint64 = 2'u64 ^ 4
# Deposit contract
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L52
# Ethereum Goerli testnet
DEPOSIT_CHAIN_ID* = 5
DEPOSIT_NETWORK_ID* = 5
# Fork choice
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L32
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# Changed
SAFE_SLOTS_TO_UPDATE_JUSTIFIED*: uint64 = 2
# Validators
# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.1/configs/minimal.yaml#L38
# Changed
ETH1_FOLLOW_DISTANCE* {.intdefine.}: uint64 = 16 # blocks
# Unchanged
TARGET_AGGREGATORS_PER_COMMITTEE*: uint64 = 16 # validators
RANDOM_SUBNETS_PER_VALIDATOR*: uint64 = 1 # subnet
EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION*: uint64 = 256 # epochs ~ 27 hours
SECONDS_PER_ETH1_BLOCK* {.intdefine.}: uint64 = 14 # estimate from Eth1 mainnet)