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

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# 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/v0.6.3/configs/constant_presets/minimal.yaml
const
# Misc
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.0/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/v0.7.0/specs/core/0_beacon-chain.md#deposit-contract
# Unchanged
DEPOSIT_CONTRACT_TREE_DEPTH* = 32
# Gwei values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.0/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/v0.7.0/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_BYTE* = 0'u8
# Time parameters
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.0/specs/core/0_fork-choice.md#time-parameters
# Unchanged
SECONDS_PER_SLOT*{.intdefine.} = 6'u64
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
2019-06-03 10:31:04 +00:00
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.0/specs/core/0_beacon-chain.md#time-parameters
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
2019-06-03 10:31:04 +00:00
# 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/v0.7.0/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/v0.7.0/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
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
2019-06-03 10:31:04 +00:00
MIN_SLASHING_PENALTY_QUOTIENT* = 32 # 2^5
# Max operations per block
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.7.0/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/v0.7.0/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