🧩 Setting/Unsetting a Verifier Address

This document outlines the secure and auditable flow for setting or unsetting a verifier address via a Timelock-controlled multisig process.

Note: These contracts are governed by the Security Council Charter.

🟨 1. Deploy Implementation of Verifier Contract

Actor: Well-Known Deployer
Actions:

Deploys the Implementation contract (e.g. 0xAbCd1234)
The implementation:
- ✅ Must be verified on Etherscan
- ✅ Must be confirmed to match audited code by multiple auditors
- ✅ Bytecode must be verified to match the audited version

🟧 2. Schedule Transaction via Timelock

Timeframe: Some time after the implementation is deployed
Actor: Council Member
Actions:

Adds a scheduled transaction via the Security Council Safe
This transaction goes to the TimelockController
It schedules a call to the Proxy to invoke:
- setVerifierAddress or unsetVerifierAddress
- At a specific index (e.g. 0xAbCd1234 at index 0)

Verification Requirements:

✅ Transaction hash, details, and simulation must be verified
✅ Function and parameters must be verified

Flow:

Council Member 
    → Security Council Safe (adds schedule)
        → TimelockController (with configured delay)
            → Proxy (targets and calls set/unset function)
                → Signatures and on-chain execution

🟩 3. Execute Transaction After Delay

Timeframe: Some time after the configured delay
Actor: Council Member
Actions:

Adds an execute transaction with a payload matching the scheduled transaction
Follows same path:
- Security Council Safe → TimelockController → Proxy
- Executes setVerifierAddress or unsetVerifierAddress

Verification Requirements:

✅ Transaction hash, details, and simulation must be verified
✅ Function and parameters must be verified

🗂️ Function Signatures

4bytes	Signature
`0xc2116974`	setVerifierAddress(address,uint256)
`0x28958174`	unsetVerifierAddress(uint256)

Outcome:
➡️ Verifier address is set or unset

🗂️ Mainnet Contract Addresses

Component	Chain	Address
TimelockController	Ethereum	`0xd6B9c960f779c728C86752119849318E5d550574`
Proxy	LineaRollup	`0xd194Bd535d285f05D7B411E21A1460D11B0876F`
Deployer	Ethereum	`0x6dD3120E329dC5FaA3d2c6f65705E4f648fF65F7`

🧾 Verifier Address Types

Description	Value
Legacy Placeholder	`0x1111111111111111111111111111111111111111`
Removed / Unassigned	`0x0000000000000000000000000000000000000000`
New Verifier	Any standard non-zero Ethereum address

✅ Security Summary

All changes go through delayed execution via the TimelockController
All functions and parameters must be independently verified
Ensures decentralized governance and secure upgrades

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