Update 0_beacon-chain.md

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Justin 2018-11-24 21:51:09 +00:00 committed by GitHub
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@ -37,6 +37,7 @@ The primary source of load on the beacon chain are "attestations". Attestations
| `MIN_ONLINE_DEPOSIT_SIZE` | 2**4 (= 16) | ETH | | `MIN_ONLINE_DEPOSIT_SIZE` | 2**4 (= 16) | ETH |
| `GWEI_PER_ETH` | 10**9 | Gwei/ETH | | `GWEI_PER_ETH` | 10**9 | Gwei/ETH |
| `DEPOSIT_CONTRACT_ADDRESS` | **TBD** | - | | `DEPOSIT_CONTRACT_ADDRESS` | **TBD** | - |
| `DEPOSITS_FOR_CHAIN_START` | 2**14 (= 16,384) | deposits |
| `TARGET_COMMITTEE_SIZE` | 2**8 (= 256) | validators | | `TARGET_COMMITTEE_SIZE` | 2**8 (= 256) | validators |
| `GENESIS_TIME` | **TBD** | seconds | | `GENESIS_TIME` | **TBD** | seconds |
| `SLOT_DURATION` | 6 | seconds | | `SLOT_DURATION` | 6 | seconds |
@ -577,7 +578,7 @@ total_deposit_count: int128
@public @public
def deposit(deposit_params: bytes[2048]): def deposit(deposit_params: bytes[2048]):
index: int128 = self.total_deposit_count + 2**POW_CONTRACT_MERKLE_TREE_DEPTH index: int128 = self.total_deposit_count + 2**POW_CONTRACT_MERKLE_TREE_DEPTH
msg_gwei_bytes8: bytes[8] = slice(convert(msg.value / 10**9, 'bytes32'), 24, 8) msg_gwei_bytes8: bytes[8] = slice(convert(msg.value / GWEI_PER_ETH, 'bytes32'), 24, 8)
timestamp_bytes8: bytes[8] = slice(convert(block.timestamp, 'bytes32'), 24, 8) timestamp_bytes8: bytes[8] = slice(convert(block.timestamp, 'bytes32'), 24, 8)
deposit_data: bytes[2064] = concat(deposit_params, msg_gwei_bytes8, timestamp_bytes8) deposit_data: bytes[2064] = concat(deposit_params, msg_gwei_bytes8, timestamp_bytes8)
@ -587,9 +588,9 @@ def deposit(deposit_params: bytes[2048]):
for i in range(POW_CONTRACT_MERKLE_TREE_DEPTH): for i in range(POW_CONTRACT_MERKLE_TREE_DEPTH):
index //= 2 index //= 2
self.receipt_tree[index] = sha3(concat(self.receipt_tree[index * 2], self.receipt_tree[index * 2 + 1])) self.receipt_tree[index] = sha3(concat(self.receipt_tree[index * 2], self.receipt_tree[index * 2 + 1]))
if msg.value == MIN_DEPOSIT_SIZE: if msg.value >= MIN_DEPOSIT_SIZE:
self.total_deposit_count += 1 self.total_deposit_count += 1
if self.total_deposit_count == 16384: if self.total_deposit_count == DEPOSITS_FOR_CHAIN_START:
log.ChainStart(self.receipt_tree[1], timestamp_bytes8) log.ChainStart(self.receipt_tree[1], timestamp_bytes8)
@public @public