Question 1

What is METIS?

Accepted Answer

METIS is the token of the Metis network; Metis is an Ethereum Layer 2 network compatible with the Ethereum Virtual Machine (EVM). Users can execute transactions and deploy or use EVM-compatible applications on this Layer 2, while the network uses decentralized sequencers to handle transaction ordering and block production, with the goal of avoiding a single sequencer bearing this critical responsibility. Metis anchors Layer 2 transactions to Ethereum Layer 1 in batches. Therefore, METIS is not a standalone application token: it is connected to the Metis Layer 2 network, its sequencer participation mechanism, and its community governance architecture.

Question 2

What role does METIS play in the decentralized sequencer mechanism?

Accepted Answer

METIS is used for locking and staking in the decentralized sequencer system, and as the basis for stake-based community governance weight. Smart contracts on Ethereum are responsible for maintaining locking relationships, managing sequencer stakes, and recording key data related to sequencer rotation. This does not mean that any address holding tokens automatically processes transactions. Only participants that meet the technical, admission, and locking requirements and operate nodes can enter the sequencer pool; stake weight is then used to influence sequencer election or rotation and governance voting weight.

Question 3

How do Metis transactions proceed from submission to Ethereum anchoring?

Accepted Answer

Metis transactions are first sent by users through RPC to the current sequencer; the sequencer validates the transactions and assembles and executes valid transactions into Layer 2 blocks. Users can obtain a transaction hash and block number at this stage, but anchoring the batch to Ethereum is a subsequent key step. The sequencer groups multiple Layer 2 blocks into a batch. The MPC mechanism signs the batch with multiple parties; the documentation states that signatures require participation by more than two-thirds of the existing sequencer nodes. The signed batch is then submitted to Ethereum Layer 1 through bridging and adapter modules to obtain finality anchored at that layer.

Question 4

How does Metis avoid having a single sequencer continuously control transaction ordering?

Accepted Answer

Metis is not permanently ordered by one fixed node. The PoS consensus layer uses a weighted random algorithm to manage periodic sequencer rotation, with weight related to locked METIS; when a node fails or is identified as malicious, the system can reselect a node to maintain block production. Rotation and multi-party batch signing address different stages: the former determines who currently processes transactions, while the latter requires multiple existing sequencers to jointly participate in signing a batch before it is submitted to Ethereum. Together, they reduce reliance on a single ordering node failing or independently submitting batches.

Question 5

How can a METIS holder potentially participate in the sequencer pool?

Accepted Answer

No. Holding METIS by itself does not mean becoming a sequencer. Participants must also deploy and operate a sequencer node, complete node information submission and whitelist-related procedures, and execute locking on Ethereum mainnet after node synchronization is completed. Synchronization is a necessary stage before locking: the documentation requires both the bridge component and L2 Geth to synchronize to the latest height; if operations continue before synchronization is complete, the locking event may not be recognized. After locking is completed, participants must also maintain the node and network connection, monitor logs, and update software in order to continuously assume operational responsibilities.

Question 6

How much METIS must be locked to participate, and what is the cap for reward calculations?

Accepted Answer

When applying to become a sequencer, the wallet must hold and lock at least 20,000 METIS on Ethereum mainnet. A locking transaction can still be executed with more than 100,000 METIS, but rewards are calculated only on up to 100,000 METIS locked, so the amount above that does not increase the amount used for that reward calculation. The locked METIS must be on Ethereum Layer 1, rather than solely on Metis Layer 2. Completing the lock is only one part of the operational onboarding process; participants must still keep the node running properly and meet the network's other requirements.

Question 7

What happens when exiting or partially withdrawing locked METIS?

Accepted Answer

When exiting the sequencer pool, an unlock transaction must first be initiated from the dashboard, followed by a 21-day exit period. During these 21 days, the node stops producing blocks and no longer receives rewards; participants can withdraw their locked METIS only after the waiting period ends. This waiting stage means that “initiating an exit” and “being able to retrieve tokens” are not the same point in time. The documentation also states that partial withdrawals apply only to the portion above the 20,000 METIS minimum lock; the withdrawable amount is calculated as “total locked amount minus 20,000 METIS.”

Question 8

Which risks and limitations should be distinguished when using or locking METIS?

Accepted Answer

Participating as a sequencer should not be assessed solely by token balance. There is a restriction against immediate exit during the locking period, block production stops and rewards do not accrue during the exit period, and locked amounts above 100,000 METIS do not provide additional capacity for reward calculations. In addition, operators bear operational responsibilities including safeguarding node keys, server and network stability, synchronization status, and software updates. Losing a private key or processing rewards to an incorrect address can have irreversible consequences; these are node-operation risks that cannot be eliminated merely by holding METIS.

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