2019-05-27 12:48:13 +00:00
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# beacon_chain
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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# This file contains constants that are part of the spec and thus subject to
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# serialization and spec updates.
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import
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# Standard library
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math,
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# Third-party
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eth/common,
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# Internals
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../crypto, ../digest
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type
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Slot* = distinct uint64
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Epoch* = distinct uint64
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{.experimental: "codeReordering".} # SLOTS_PER_EPOCH is use before being defined in spec
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.1/configs/constant_presets/minimal.yaml
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const
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# Misc
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# ---------------------------------------------------------------
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More 0.6.1 updates (#274)
* implement get_churn_limit from 0.6.1; update initiate_validator_exit and get_previous_epoch to 0.6.1; remove obsoleted/non-spec reduce_balance, replaced by decrease_balance; mark BeaconBlock as 0.6.1
* rename get_block_root to get_block_root_at_slot and introduce epoch-oriented get_block_root; implement get_attestation_slot, get_matching_source_attestations, get_matching_target_attestations, get_matching_head_attestations, 0.6.1 get_attesting_indices, get_unslashed_attesting_indices, get_attestation_deltas, process_rewards_and_penalties; rm get_inactivity_penalty
* update Validator and processVoluntaryExits to 0.6.1; rm obsolete inclusion_slots/inclusion_distances
* rm removed activate_validator; mark DepositData, misc values, Gwei values, Randao processing, state caching as 0.6.1; update GENESIS_SLOT to 64, since it doesn't quite yet work at 0
* mark BeaconBlockHeader as 0.6.1; update BeaconBlockBody to 0.6.1; rename WHISTLEBLOWER_REWARD_QUOTIENT to WHISTLEBLOWING_REWARD_QUOTIENT; update slash_validator to 0.6.1
* implement 0.6.2 is_slashable_validator; update processProposerSlashings to 0.6.2; mark state caching as 0.6.2
* mark get_total_active_balance and process_slashings as 0.6.2; update get_base_reward to 0.6.2
* rm prepare_validator_for_withdrawal, process_exit_queue; mark mainnet misc constants as 0.6.2; update process block header to 0.6.2
* address mratsim's code review comment
2019-05-29 10:08:56 +00:00
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.1/specs/core/0_beacon-chain.md#misc
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2019-05-27 12:48:13 +00:00
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# Changed
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SHARD_COUNT* {.intdefine.} = 8
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TARGET_COMMITTEE_SIZE* = 4
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# Unchanged
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MAX_INDICES_PER_ATTESTATION* = 4096
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MIN_PER_EPOCH_CHURN_LIMIT* = 4
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CHURN_LIMIT_QUOTIENT* = 2^16
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BASE_REWARDS_PER_EPOCH* = 5
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# Changed
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SHUFFLE_ROUND_COUNT* = 10
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# Deposit contract
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.0/specs/core/0_beacon-chain.md#deposit-contract
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# Unchanged
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DEPOSIT_CONTRACT_ADDRESS = "0x1234567890123456789012345678901234567890"
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DEPOSIT_CONTRACT_TREE_DEPTH* = 32
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# Gwei values
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# ---------------------------------------------------------------
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More 0.6.1 updates (#274)
* implement get_churn_limit from 0.6.1; update initiate_validator_exit and get_previous_epoch to 0.6.1; remove obsoleted/non-spec reduce_balance, replaced by decrease_balance; mark BeaconBlock as 0.6.1
* rename get_block_root to get_block_root_at_slot and introduce epoch-oriented get_block_root; implement get_attestation_slot, get_matching_source_attestations, get_matching_target_attestations, get_matching_head_attestations, 0.6.1 get_attesting_indices, get_unslashed_attesting_indices, get_attestation_deltas, process_rewards_and_penalties; rm get_inactivity_penalty
* update Validator and processVoluntaryExits to 0.6.1; rm obsolete inclusion_slots/inclusion_distances
* rm removed activate_validator; mark DepositData, misc values, Gwei values, Randao processing, state caching as 0.6.1; update GENESIS_SLOT to 64, since it doesn't quite yet work at 0
* mark BeaconBlockHeader as 0.6.1; update BeaconBlockBody to 0.6.1; rename WHISTLEBLOWER_REWARD_QUOTIENT to WHISTLEBLOWING_REWARD_QUOTIENT; update slash_validator to 0.6.1
* implement 0.6.2 is_slashable_validator; update processProposerSlashings to 0.6.2; mark state caching as 0.6.2
* mark get_total_active_balance and process_slashings as 0.6.2; update get_base_reward to 0.6.2
* rm prepare_validator_for_withdrawal, process_exit_queue; mark mainnet misc constants as 0.6.2; update process block header to 0.6.2
* address mratsim's code review comment
2019-05-29 10:08:56 +00:00
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.1/specs/core/0_beacon-chain.md#gwei-values
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2019-05-27 12:48:13 +00:00
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# Unchanged
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MIN_DEPOSIT_AMOUNT* = 2'u64^0 * 10'u64^9
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MAX_EFFECTIVE_BALANCE* = 2'u64^5 * 10'u64^9
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EJECTION_BALANCE* = 2'u64^4 * 10'u64^9
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EFFECTIVE_BALANCE_INCREMENT* = 2'u64^0 * 10'u64^9
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# Initial values
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.5.0/specs/core/0_beacon-chain.md#initial-values
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# Unchanged
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GENESIS_FORK_VERSION* = [0'u8, 0'u8, 0'u8, 0'u8]
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More 0.6.1 updates (#274)
* implement get_churn_limit from 0.6.1; update initiate_validator_exit and get_previous_epoch to 0.6.1; remove obsoleted/non-spec reduce_balance, replaced by decrease_balance; mark BeaconBlock as 0.6.1
* rename get_block_root to get_block_root_at_slot and introduce epoch-oriented get_block_root; implement get_attestation_slot, get_matching_source_attestations, get_matching_target_attestations, get_matching_head_attestations, 0.6.1 get_attesting_indices, get_unslashed_attesting_indices, get_attestation_deltas, process_rewards_and_penalties; rm get_inactivity_penalty
* update Validator and processVoluntaryExits to 0.6.1; rm obsolete inclusion_slots/inclusion_distances
* rm removed activate_validator; mark DepositData, misc values, Gwei values, Randao processing, state caching as 0.6.1; update GENESIS_SLOT to 64, since it doesn't quite yet work at 0
* mark BeaconBlockHeader as 0.6.1; update BeaconBlockBody to 0.6.1; rename WHISTLEBLOWER_REWARD_QUOTIENT to WHISTLEBLOWING_REWARD_QUOTIENT; update slash_validator to 0.6.1
* implement 0.6.2 is_slashable_validator; update processProposerSlashings to 0.6.2; mark state caching as 0.6.2
* mark get_total_active_balance and process_slashings as 0.6.2; update get_base_reward to 0.6.2
* rm prepare_validator_for_withdrawal, process_exit_queue; mark mainnet misc constants as 0.6.2; update process block header to 0.6.2
* address mratsim's code review comment
2019-05-29 10:08:56 +00:00
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GENESIS_SLOT* = 64.Slot
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FAR_FUTURE_EPOCH* = (not 0'u64).Epoch # 2^64 - 1 in spec
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BLS_WITHDRAWAL_PREFIX_BYTE* = 0'u8
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# Time parameters
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.1/specs/core/0_fork-choice.md#time-parameters
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# Unchanged
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SECONDS_PER_SLOT*{.intdefine.} = 6'u64
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MIN_ATTESTATION_INCLUSION_DELAY* = 2'u64^2
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# Changed
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SLOTS_PER_EPOCH* {.intdefine.} = 64
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# Unchanged
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MIN_SEED_LOOKAHEAD* = 1
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ACTIVATION_EXIT_DELAY* = 4
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# Changed
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SLOTS_PER_ETH1_VOTING_PERIOD* = 16
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SLOTS_PER_HISTORICAL_ROOT* = 64
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# Unchanged
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MIN_VALIDATOR_WITHDRAWABILITY_DELAY* = 2'u64^8
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PERSISTENT_COMMITTEE_PERIOD* = 2'u64^11
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MAX_CROSSLINK_EPOCHS* = 2'u64^6
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MIN_EPOCHS_TO_INACTIVITY_PENALTY* = 2'u64^2
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# State list lengths
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.0/specs/core/0_beacon-chain.md#state-list-lengths
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# Changed
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LATEST_RANDAO_MIXES_LENGTH* = 64
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LATEST_ACTIVE_INDEX_ROOTS_LENGTH* = 64
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LATEST_SLASHED_EXIT_LENGTH* = 64
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# Reward and penalty quotients
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.0/specs/core/0_beacon-chain.md#reward-and-penalty-quotients
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# Unchanged
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BASE_REWARD_QUOTIENT* = 2'u64^5
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More 0.6.1 updates (#274)
* implement get_churn_limit from 0.6.1; update initiate_validator_exit and get_previous_epoch to 0.6.1; remove obsoleted/non-spec reduce_balance, replaced by decrease_balance; mark BeaconBlock as 0.6.1
* rename get_block_root to get_block_root_at_slot and introduce epoch-oriented get_block_root; implement get_attestation_slot, get_matching_source_attestations, get_matching_target_attestations, get_matching_head_attestations, 0.6.1 get_attesting_indices, get_unslashed_attesting_indices, get_attestation_deltas, process_rewards_and_penalties; rm get_inactivity_penalty
* update Validator and processVoluntaryExits to 0.6.1; rm obsolete inclusion_slots/inclusion_distances
* rm removed activate_validator; mark DepositData, misc values, Gwei values, Randao processing, state caching as 0.6.1; update GENESIS_SLOT to 64, since it doesn't quite yet work at 0
* mark BeaconBlockHeader as 0.6.1; update BeaconBlockBody to 0.6.1; rename WHISTLEBLOWER_REWARD_QUOTIENT to WHISTLEBLOWING_REWARD_QUOTIENT; update slash_validator to 0.6.1
* implement 0.6.2 is_slashable_validator; update processProposerSlashings to 0.6.2; mark state caching as 0.6.2
* mark get_total_active_balance and process_slashings as 0.6.2; update get_base_reward to 0.6.2
* rm prepare_validator_for_withdrawal, process_exit_queue; mark mainnet misc constants as 0.6.2; update process block header to 0.6.2
* address mratsim's code review comment
2019-05-29 10:08:56 +00:00
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WHISTLEBLOWING_REWARD_QUOTIENT* = 2'u64^9
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2019-05-27 12:48:13 +00:00
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PROPOSER_REWARD_QUOTIENT* = 2'u64^3
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INACTIVITY_PENALTY_QUOTIENT* = 2'u64^25
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MIN_PENALTY_QUOTIENT* = 32 # 2^5
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# Max operations per block
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.0/specs/core/0_beacon-chain.md#max-operations-per-block
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# Unchanged
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MAX_PROPOSER_SLASHINGS* = 2^4
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MAX_ATTESTER_SLASHINGS* = 2^0
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MAX_ATTESTATIONS* = 2^7
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MAX_DEPOSITS* = 2^4
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MAX_VOLUNTARY_EXITS* = 2^4
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MAX_TRANSFERS* = 0
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type
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# Signature domains
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# ---------------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.6.0/specs/core/0_beacon-chain.md#signature-domains
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SignatureDomain* {.pure.} = enum
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DOMAIN_BEACON_PROPOSER = 0
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DOMAIN_RANDAO = 1
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DOMAIN_ATTESTATION = 2
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DOMAIN_DEPOSIT = 3
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DOMAIN_VOLUNTARY_EXIT = 4
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DOMAIN_TRANSFER = 5
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