Perpetual DEX or centralised exchange?

Custody is the real distinction

Everything else follows from this. Depositing to a centralised exchange transfers the asset; what remains is a database entry representing a claim against the company. That claim is only as good as the company, which is a lesson the industry has relearned expensively several times.

On a perpetual DEX, collateral sits in a smart contract. The rules governing it are public, and no operator can move it outside those rules. That does not make it safe — the contract can have bugs and the oracle can be wrong — but the risk becomes technical and auditable rather than institutional and hidden.

Where centralised venues still lead

Liquidity is the honest answer. The largest centralised books remain deeper than most on-chain venues, especially outside the top few markets, and depth translates directly into better fills for large orders.

They also handle fiat, offer mature APIs and sub-accounts, list far more markets, and provide support when something goes wrong. On-chain, a mistake is usually final.

Where on-chain venues lead

Solvency is verifiable rather than asserted. Positions, collateral and the insurance fund are on-chain and can be checked by anyone at any time, instead of appearing in a periodic attestation.

Access is permissionless — a wallet is enough, with no account approval that can be withdrawn. Liquidation rules are in code rather than in policy, so they cannot be applied selectively. And withdrawals do not depend on an operator deciding to process them, which matters precisely in the moments when it matters most.

Comparing the risks honestly

The trade is not risk for safety; it is one set of risks for another, and they fail in different ways.

Centralised

Insolvency, misuse of customer funds, frozen withdrawals, account closure, and jurisdictional restrictions. Failures are usually institutional and often invisible until they are total.

On-chain

Contract exploits, oracle manipulation, chain outages, and irreversible user error. Failures are usually technical, sudden, and visible on-chain as they happen.

How to choose

Size and time horizon do most of the work. Large orders in major markets often still execute better on a deep centralised book. Capital held for a long time is exposed to custody risk for that whole period, which argues for on-chain.

Many active traders use both: centralised venues for size and fiat, on-chain venues for custody and for markets that centralised exchanges do not list. Treating it as an exclusive choice is usually the wrong framing.