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9 changes: 4 additions & 5 deletions EIPS/eip-4844.md
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,6 @@ Compared to full data sharding, this EIP has a reduced cap on the number of thes
| `TARGET_BLOB_GAS_PER_BLOCK` | `393216` |
| `MIN_BLOB_GASPRICE` | `1` |
| `BLOB_GASPRICE_UPDATE_FRACTION` | `3338477` |
| `LIMIT_BLOBS_PER_TX` | `2**12` |
| `GAS_PER_BLOB` | `2**17` |
| `HASH_OPCODE_BYTE` | `Bytes1(0x49)` |
| `HASH_OPCODE_GAS` | `3` |
Expand Down Expand Up @@ -167,10 +166,10 @@ We introduce blob gas as a new type of gas. It is independent of normal gas and
We use the `excess_blob_gas` header field to store persistent data needed to compute the blob gas price. For now, only blobs are priced in blob gas.

```python
def calc_data_fee(header: Header, tx: SignedBlobTransaction) -> int:
def calc_data_fee(header: Header, tx: Transaction) -> int:
return get_total_blob_gas(tx) * get_blob_gasprice(header)

def get_total_blob_gas(tx: SignedBlobTransaction) -> int:
def get_total_blob_gas(tx: Transaction) -> int:
return GAS_PER_BLOB * len(tx.blob_versioned_hashes)

def get_blob_gasprice(header: Header) -> int:
Expand Down Expand Up @@ -259,14 +258,14 @@ def validate_block(block: Block) -> None:

# modify the check for sufficient balance
max_total_fee = tx.gas * tx.max_fee_per_gas
if type(tx) is SignedBlobTransaction:
if get_tx_type(tx) == BLOB_TX_TYPE:
max_total_fee += get_total_blob_gas(tx) * tx.max_fee_per_blob_gas
assert signer(tx).balance >= max_total_fee

...

# add validity logic specific to blob txs
if type(tx) is SignedBlobTransaction:
if get_tx_type(tx) == BLOB_TX_TYPE:
# there must be at least one blob
assert len(tx.blob_versioned_hashes) > 0

Expand Down