Question 1

What is Lighter (LIT)?

Accepted Answer

LIT is Lighter's native infrastructure token; Lighter is an Ethereum application Layer 2 for financial use cases, and its first product is perpetual contract trading. LIT is used for the staking arrangement described in official documentation and token mechanisms linked to protocol fee buybacks. Perpetual contracts are derivative markets traded by users, while LIT is the protocol token; holding LIT does not mean holding a position in a particular perpetual contract.

Question 2

What is Lighter's first product?

Accepted Answer

Lighter's first product is perpetual contract trading. Users can establish long or short exposure with no fixed expiry date, but positions remain subject to margin, market rules, and liquidation mechanisms. After users submit orders, the orders are matched and executed and account states are updated accordingly; if margin is insufficient or market rules are triggered, positions may be liquidated.

Question 3

How does Lighter process protocol transactions?

Accepted Answer

Lighter separates transaction processing into steps including sequencing, execution proofs, data indexing, and on-chain settlement. The sequencer orders and executes user transactions according to rules, the prover generates verifiable proofs for execution and state transitions, and the indexer and API service provide state and query information. The protocol smart contracts on Ethereum retain the canonical state root and process corresponding state updates and verification, connecting application-layer trading results with verifiable state on Ethereum.

Question 4

What do the sequencer and prover each do?

Accepted Answer

The sequencer receives and executes user transactions in order and forms blocks; the prover generates proofs for the execution of those transactions and the resulting state transitions. The former determines processing order and execution results, while the latter makes those results verifiable. Sequencer execution itself is not the final verifiable conclusion; proofs together with verification and state updates on the Ethereum contract side connect execution results to the canonical state.

Question 5

What are the characteristics of Lighter's order matching?

Accepted Answer

Lighter's order matching uses price-time priority: orders at better prices have priority; where prices are the same, orders that entered the queue earlier have priority. This rule determines the priority order of executable orders in the order book. Exchange operations such as matching and liquidation are included within the proof system's verification scope, so changes to account and market state caused by order execution must be verified together with the state transition.

Question 6

What role does Ethereum play in Lighter?

Accepted Answer

Ethereum contracts serve as Lighter's settlement and exit-guarantee layer: they retain assets deposited by users and the canonical state root, and process state updates and related verification. Ethereum does not directly match orders one by one; however, when users need to verify account state or take the censorship-resistant exit path, the on-chain contracts and published data provide the foundation.

Question 7

What is the difference between LIT and perpetual contracts?

Accepted Answer

LIT is the protocol token, while perpetual contracts are trading markets provided by Lighter; they differ in function, risk, and mode of participation. Official LIT utility information involves staking and a fee-revenue buyback mechanism, while perpetual contract positions are determined by trade direction, margin, price changes, and market rules. Purchasing or holding LIT does not automatically establish a perpetual contract position; trading perpetual contracts also does not mean acquiring LIT.

Question 8

What fundamental configurations do Lighter perpetual markets include?

Accepted Answer

The fundamental configuration of perpetual markets includes funding rates, mark prices, index prices, open interest limits, and margin requirements. Index and mark prices are used for market pricing and risk calculations, margin and open interest limits constrain the scale of risk that can be assumed, and the funding rate is a market parameter of perpetual contracts. The outcomes users actually bear depend on conditions such as the market's configuration at the time and the direction and size of their positions; specific costs or liquidation thresholds cannot be inferred solely from the name of a perpetual contract.

Question 9

How can users verify their account state?

Accepted Answer

Users can use data published to Ethereum as protocol state updates occur to reconstruct and verify their own account state. The key is to match public data with the protocol's canonical state root and account-related state, rather than relying only on an interface balance. This connects account verification with Lighter's proofs and Ethereum state-update system: the application layer processes transactions, while data published on-chain enables users to review the resulting state.

Question 10

What are priority transactions?

Accepted Answer

Priority transactions are an on-chain queued path established for censorship-resistant exits, mainly including closing positions, withdrawing assets, or redeeming public liquidity pool shares. After users submit requests through Ethereum contracts, the contracts process them in queue order rather than relying entirely on the ordinary transaction flow being accepted by the sequencer. If a request in this queue is not processed within the prescribed time, the protocol's subsequent emergency protection mechanism intervenes.

Question 11

What is the Escape Hatch emergency exit mechanism?

Accepted Answer

Escape Hatch is Lighter's emergency exit mechanism when priority transactions remain unprocessed for an extended period. If the sequencer does not process queued priority transactions within the prescribed time, Ethereum contracts can freeze the exchange state and enable this exit path. After the freeze, normal matching no longer continues, and users can exit according to the smart contract. It follows the priority-transaction process: queued requests are provided first, and contract exit is used if processing conditions are not met.

Question 12

How do Lighter's fee buybacks and staking rewards connect?

Accepted Answer

According to the LIT Utility documentation, the protocol uses trading fee revenue to buy back LIT; LIT used for staking rewards is obtained through those purchases. This path is “fee revenue—buyback—source of reward tokens,” rather than describing rewards as newly issued from nothing. Whether staking rewards are received and their actual amount still depend on official staking arrangements and applicable conditions; the buyback mechanism itself does not guarantee price, returns, or buyback size.

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