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Merge pull request #1556 from ethereum/constant-genesis-slot 

move GENESIS_SLOT/EPOCH to constants
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Danny Ryan 2020-01-06 17:28:06 -07:00 committed by GitHub
parent 83abd3e8b3 b637b9ad72
commit c3f7f0bc2b
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4 changed files with 9 additions and 8 deletions
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2
configs/mainnet.yaml
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@ -63,8 +63,6 @@ EFFECTIVE_BALANCE_INCREMENT: 1000000000
# Initial values # Initial values
# --------------------------------------------------------------- # ---------------------------------------------------------------
# 0, GENESIS_EPOCH is derived from this constant
GENESIS_SLOT: 0
# Mainnet initial fork version, recommend altering for testnets # Mainnet initial fork version, recommend altering for testnets
GENESIS_FORK_VERSION: 0x00000000 GENESIS_FORK_VERSION: 0x00000000
BLS_WITHDRAWAL_PREFIX: 0x00 BLS_WITHDRAWAL_PREFIX: 0x00

2
configs/minimal.yaml
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@ -63,8 +63,6 @@ EFFECTIVE_BALANCE_INCREMENT: 1000000000
# Initial values # Initial values
# --------------------------------------------------------------- # ---------------------------------------------------------------
# 0, GENESIS_EPOCH is derived from this constant
GENESIS_SLOT: 0
# Highest byte set to 0x01 to avoid collisions with mainnet versioning # Highest byte set to 0x01 to avoid collisions with mainnet versioning
GENESIS_FORK_VERSION: 0x00000001 GENESIS_FORK_VERSION: 0x00000001
BLS_WITHDRAWAL_PREFIX: 0x00 BLS_WITHDRAWAL_PREFIX: 0x00

4
specs/core/0_beacon-chain.md
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@ -158,6 +158,8 @@ The following values are (non-configurable) constants used throughout the specif
| Name | Value | | Name | Value |
| - | - | | - | - |
| `GENESIS_SLOT` | `Slot(0)` |
| `GENESIS_EPOCH` | `Epoch(0)` |
| `FAR_FUTURE_EPOCH` | `Epoch(2**64 - 1)` | | `FAR_FUTURE_EPOCH` | `Epoch(2**64 - 1)` |
| `BASE_REWARDS_PER_EPOCH` | `4` | | `BASE_REWARDS_PER_EPOCH` | `4` |
| `DEPOSIT_CONTRACT_TREE_DEPTH` | `2**5` (= 32) | | `DEPOSIT_CONTRACT_TREE_DEPTH` | `2**5` (= 32) |
@ -196,8 +198,6 @@ The following values are (non-configurable) constants used throughout the specif
| Name | Value | | Name | Value |
| - | - | | - | - |
| `GENESIS_SLOT` | `Slot(0)` |
| `GENESIS_EPOCH` | `Epoch(0)` |
| `GENESIS_FORK_VERSION` | `Version('0x00000000')` | | `GENESIS_FORK_VERSION` | `Version('0x00000000')` |
| `BLS_WITHDRAWAL_PREFIX` | `Bytes1('0x00')` | | `BLS_WITHDRAWAL_PREFIX` | `Bytes1('0x00')` |

9
specs/validator/0_beacon-chain-validator.md
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@ -260,10 +260,15 @@ Let `get_eth1_data(block: Eth1Block) -> Eth1Data` be the function that returns t
An honest block proposer sets `block.body.eth1_data = get_eth1_vote(state)` where: An honest block proposer sets `block.body.eth1_data = get_eth1_vote(state)` where:
```python
def compute_time_at_slot(state: BeaconState, slot: Slot) -> uint64:
return state.genesis_time + slot * SECONDS_PER_SLOT
```
```python ```python
def voting_period_start_time(state: BeaconState) -> uint64: def voting_period_start_time(state: BeaconState) -> uint64:
eth1_voting_period_start_slot = state.slot % SLOTS_PER_ETH1_VOTING_PERIOD eth1_voting_period_start_slot = Slot(state.slot - state.slot % SLOTS_PER_ETH1_VOTING_PERIOD)
return state.genesis_time + eth1_voting_period_start_slot * SECONDS_PER_SLOT return compute_time_at_slot(state, eth1_voting_period_start_slot)
``` ```
```python ```python