feat: EIP-7691 (#1762)

* feat: EIP-7691

* fix

crates/eips/src/eip7691.rs

@@ -0,0 +1,23 @@
+//! Contains constants and utility functions for [EIP-7691](https://eips.ethereum.org/EIPS/eip-7691)
+
+use crate::eip4844::{fake_exponential, BLOB_TX_MIN_BLOB_GASPRICE};
+
+/// CL-enforced target blobs per block after Pectra hardfork activation.
+pub const TARGET_BLOBS_PER_BLOCK_ELECTRA: u64 = 6;
+
+/// CL-enforced maximum blobs per block after Pectra hardfork activation.
+pub const MAX_BLOBS_PER_BLOCK_ELECTRA: u64 = 9;
+
+/// Determines the maximum rate of change for blob fee after Pectra hardfork activation.
+pub const BLOB_GASPRICE_UPDATE_FRACTION_PECTRA: u128 = 5007716;
+
+/// Same as [`crate::eip4844::calc_blob_gasprice`] but uses the
+/// [`BLOB_GASPRICE_UPDATE_FRACTION_PECTRA`].
+#[inline]
+pub fn calc_blob_gasprice(excess_blob_gas: u64) -> u128 {
+    fake_exponential(
+        BLOB_TX_MIN_BLOB_GASPRICE,
+        excess_blob_gas as u128,
+        BLOB_GASPRICE_UPDATE_FRACTION_PECTRA,
+    )
+}

crates/eips/src/lib.rs

@@ -42,6 +42,8 @@ pub mod eip7251;
 
 pub mod eip7685;
 
+pub mod eip7691;
+
 pub mod eip7702;
 
 pub mod eip7742;