Crypto glossary

Liquidity Lock

A liquidity lock places the tokens that represent a project's trading liquidity into a time-locked smart contract, so the team cannot withdraw that liquidity before a set date. It reduces one specific risk, a sudden liquidity pull, but it does not make a token safe.

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What is being locked

When a new token launches on a decentralized exchange, someone has to create a liquidity pool, usually by depositing the new token together with ETH, a stablecoin or another established asset. In return the depositor receives LP tokens, which act as a receipt for that share of the pool. Whoever holds the LP tokens can redeem them and take the pooled assets back out.

If the team keeps those LP tokens, they can remove the liquidity at any moment. Buyers are then left holding a token with almost nothing to sell it into. That is the classic rug pull. A liquidity lock sends the LP tokens to a locker contract that only releases them after a chosen date. Burning the LP tokens, sending them to an address no one controls, is a permanent alternative.

An example

Say a team launches a token with a pool of 50 ETH and 1,000,000 tokens, then locks 100 percent of the LP tokens for 12 months. Before the lock, the team could withdraw the 50 ETH and the remaining tokens in one transaction. After the lock, that specific exit is closed until the unlock date. If only 20 percent were locked, or the lock ends next week, the protection would be much weaker.

What a lock does not prevent

A lock covers the LP tokens, not the project. The team may hold a large supply of the token itself and sell it into the pool, which drains the paired ETH just as effectively. The contract might allow the owner to mint new tokens, block selling, change fees or pause trading. Some lockers allow early unlocks or extensions controlled by the owner. And once the lock expires, the liquidity can be removed as usual.

How to check a lock

Find the pool's LP token on a block explorer and see who holds it: a known locker contract, a burn address or a regular wallet. Note what share is locked and when it unlocks. Then look beyond the lock. Check how much of the token supply sits in team wallets, whether the contract is verified, and whether risky functions such as minting or blacklisting exist. A lock is one useful data point in your due diligence, not a guarantee.

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Frequently asked questions

Does a liquidity lock mean a token cannot be a rug pull?

No. It blocks one method, removing pool liquidity, for a limited time. Teams can still dump their own tokens or use harmful contract functions.

Is burning liquidity better than locking it?

Burning is permanent, so the liquidity can never be removed by anyone. A lock is temporary but leaves the project flexible, for example to migrate to a new pool.

How long should a liquidity lock last?

There is no standard. Longer locks covering most or all of the LP tokens offer more protection, while very short locks or small shares offer little.

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All glossary terms · Educational reference only — not investment, legal, tax or financial advice.