feat: add specs for eip-2935 network upgrade

specs/protocol/isthmus/derivation.md

@@ -0,0 +1,53 @@
+# Isthumus L2 Chain Derivation Changes
+
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+**Table of Contents**
+
+- [Network upgrade automation transactions](#network-upgrade-automation-transactions)
+  - [EIP-2935 Contract Deployment](#eip-2935-contract-deployment)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+# Network upgrade automation transactions
+
+The Isthumus hardfork activation block contains the following transactions, in this order:
+
+- L1 Attributes Transaction
+- User deposits from L1
+- Network Upgrade Transactions
+  - EIP-2935 Contract Deployment
+
+To not modify or interrupt the system behavior around gas computation, this block will not include any sequenced
+transactions by setting `noTxPool: true`.
+
+## EIP-2935 Contract Deployment
+
+[EIP-2935](https://eips.ethereum.org/EIPS/eip-2935) requires a contract to be deployed. To deploy this contract,
+a deposit transaction is created with attributes matching the EIP:
+
+- `from`: `0xE9f0662359Bb2c8111840eFFD73B9AFA77CbDE10`
+- `to`: `null`,
+- `mint`: `0`
+- `value`: `0`
+- `gasLimit`: `250,000`
+- `data`: `0x60538060095f395ff33373fffffffffffffffffffffffffffffffffffffffe14604657602036036042575f35600143038111604257611fff81430311604257611fff9006545f5260205ff35b5f5ffd5b5f35611fff60014303065500`,
+- `sourceHash`: `0xbfb734dae514c5974ddf803e54c1bc43d5cdb4a48ae27e1d9b875a5a150b553a`
+  computed with the "Upgrade-deposited" type, with `intent = "Isthmus: EIP-2935 Contract Deployment"
+
+This results in the EIP-2935 contract being deployed to `0x0F792be4B0c0cb4DAE440Ef133E90C0eCD48CCCC`, to verify:
+
+```bash
+cast compute-address --nonce=0 0xE9f0662359Bb2c8111840eFFD73B9AFA77CbDE10
+Computed Address: 0x0F792be4B0c0cb4DAE440Ef133E90C0eCD48CCCC
+```
+
+Verify `sourceHash`:
+
+```bash
+cast keccak $(cast concat-hex 0x0000000000000000000000000000000000000000000000000000000000000002 $(cast keccak "Isthmus: EIP-2935 Contract Deployment"))
+# 0xbfb734dae514c5974ddf803e54c1bc43d5cdb4a48ae27e1d9b875a5a150b553a
+```
+
+This transaction MUST deploy a contract with the following code hash
+`0x6e49e66782037c0555897870e29fa5e552daf4719552131a0abce779daec0a5d`.

specs/protocol/isthmus/overview.md

@@ -14,6 +14,8 @@ This document is not finalized and should be considered experimental.
 
 ## Execution Layer
 
+- [Pectra](https://eips.ethereum.org/EIPS/eip-7600) (Execution Layer):
+  - [EIP-2935](https://eips.ethereum.org/EIPS/eip-2935)
 - [L2ToL1MessagePasser Storage Root in Header](./exec-engine.md##l2tol1messagepasser-storage-root-in-header)
 
 ## Consensus Layer