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minor BLS domain type related improvements

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protolambda 2019-07-01 00:05:40 +02:00
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specs/core/0_beacon-chain.md
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@ -146,10 +146,10 @@ We define the following Python custom types for type hinting and readability:
| `Shard` | `uint64` | a shard number |
| `ValidatorIndex` | `uint64` | a validator registry index |
| `Gwei` | `uint64` | an amount in Gwei |
| `Hash` | `Bytes32` | a hash |
| `Version` | `Bytes4` | a fork version number |
| `DomainType` | `Bytes4` | a signature domain type |
| `Domain` | `Bytes8` | a signature domain |
| `Hash` | `Bytes32` | a hash |
| `BLSPubkey` | `Bytes48` | a BLS12-381 public key |
| `BLSSignature` | `Bytes96` | a BLS12-381 signature |
@ -771,7 +771,7 @@ def compute_activation_exit_epoch(epoch: Epoch) -> Epoch:
#### `bls_domain`
```python
def bls_domain(domain_type: DomainType, fork_version: bytes=b'\x00' * 4) -> Domain:
def bls_domain(domain_type: DomainType, fork_version: Version=Version()) -> Domain:
"""
Return the BLS domain for the ``domain_type`` and ``fork_version``.
"""