Update EIP-7516: BLOBBASEFEE opcode

Merged by EIP-Bot.
ethereum · Sep 13, 2023 · ed54cdb · ed54cdb
1 parent e788377
commit ed54cdb
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/EIPS/eip-7516.md b/EIPS/eip-7516.md
@@ -3,7 +3,7 @@ eip: 7516
 title: BLOBBASEFEE opcode
 description: Opcode that returns the current data-blob base-fee
 author: Carl Beekhuizen (@carlbeek)
-discussions-to: https://ethereum-magicians.org/t/eip-75xx-blobbasefee/15761
+discussions-to: https://ethereum-magicians.org/t/eip-7516-blobbasefee-opcode/15761
 status: Draft
 type: Standards Track
 category: Core
@@ -24,18 +24,20 @@ The intended use case would be for contracts to get the value of the blob base-f
 
 ## Specification
 
-Add a `BLOBBASEFEE` opcode at `(0x49)`, with gas cost `G_base`.
+Add a `BLOBBASEFEE` opcode at `(0x49)`, with gas cost `2`.
 
 | Op   | Input | Output | Cost |
 |------|-------|--------|------|
 | 0x49 | 0     | 1      | 2    |
 
+`BLOBBASEFEE` returns the result of the `get_blob_gasprice(header) -> int` function as defined in [EIP-4844 §Gas accounting](./eip-4844.md#gas-accounting).
+
 ## Rationale
 
 ### Gas cost
 
 The value of the blob base-fee is needed to process data-blob transactions. That means its value is already available before running the EVM code.
-The opcode does not add extra complexity and additional read/write operations, hence the choice of `G_base` gas cost. This is also identical to [EIP-3198](./eip-3198.md) (`BASEFEE` opcode)'s cost as it just makes available data that is in the header.
+The opcode does not add extra complexity and additional read/write operations, hence the choice of `2` gas cost. This is also identical to [EIP-3198](./eip-3198.md) (`BASEFEE` opcode)'s cost as it just makes available data that is in the header.
 
 ## Backwards Compatibility
 
@@ -45,8 +47,8 @@ There are no known backward compatibility issues with this opcode.
 
 ### Nominal case
 
-Assuming current block's data-blob base-fee is `7 wei`.
-This should push the value `7` (left padded byte32) to the stack.
+Assuming calling `get_blob_gasprice(header)` (as defined in [EIP-4844 §Gas accounting](./eip-4844.md#gas-accounting)) on the current block's header returns `7 wei`:
+`BLOBBASEFEE` should push the value `7` (left padded byte32) to the stack.
 
 Bytecode: `0x4900` (`BLOBBASEFEE, STOP`)