For several years the standard way to rank cryptocurrency exchanges was to ask each one how much it had traded and sort the answers. The flaw is visible in the description. Ranking high brought listings, users and revenue, the number was self-reported, and nothing verified it — so a substantial part of the industry began reporting numbers that were not real.
The response was a shift from measuring what exchanges claim to measuring what can be checked. Understanding what those checks are makes an exchange ranking considerably more useful than a sorted list.
Wash trading, and why it worked
Wash trading is buying and selling with yourself. On an exchange that controls both sides, it produces trades that appear in the tape, inflate reported volume, and cost the operator nothing beyond fees paid to itself.
Independent research through the late 2010s repeatedly found that the large majority of reported spot volume across the industry was not genuine, with some studies putting the figure above ninety percent once small venues were included. A 2019 report submitted to the SEC concluded that a very small number of exchanges accounted for essentially all real Bitcoin volume.
The incentive was structural. Rankings drove traffic, traffic drove listing fees, and volume drove rankings — so volume was manufactured. The behaviour has diminished as methodologies improved and as regulation reached major venues, but it has not disappeared, and it remains most prevalent among smaller and less regulated exchanges.
What a trust score actually measures
Serious data providers now score exchanges on evidence that is difficult to fabricate. The components vary in detail, but the categories are consistent.
Order book depth. How much can be bought or sold before the price moves two percent? Real depth requires real capital sitting in the book, and it can be measured continuously from outside. This is among the hardest things to fake, because faking it means exposing genuine funds to being traded against.
Web traffic against reported volume. An exchange claiming billions in daily volume while attracting a few thousand visitors is claiming something implausible. Traffic estimates are imperfect but the ratio is diagnostic.
Trade pattern analysis. Genuine trading has statistical fingerprints — trade sizes cluster in recognisable ways, arrival times follow certain distributions, and round numbers appear at particular rates. Fabricated volume frequently fails these tests, showing suspiciously uniform sizing or regular timing.
Cancellation and spread behaviour. How the order book behaves when it is hit, how quickly quotes are withdrawn, and how spreads respond to volatility all indicate whether market makers are real.
Regulatory standing. Licences held, jurisdictions served, and compliance obligations met. A venue registered with a financial regulator has filed documents, submitted to examination and accepted enforcement risk.
Proof of reserves. Cryptographic evidence that an exchange holds assets matching customer balances. This became standard practice after FTX, and it is a genuine improvement — though it is worth understanding its limit: proof of reserves shows assets, and without a corresponding proof of liabilities it does not show solvency. An exchange can demonstrate it holds a billion dollars while owing two.
Operating history and incident record. How long the venue has run, whether it has been breached, and how it handled it. Longevity is not proof of safety, but it filters out a lot.
Reading an exchange ranking properly
Once you know what goes into the score, a ranking becomes a tool rather than a leaderboard.
Look at trust score before volume. An exchange ranked highly on volume alone tells you what it reports; a high trust score tells you that independent checks support it.
Compare reported volume against normalised volume where a provider publishes both. A large gap is the provider saying, in effect, that it does not believe the reported figure.
Check depth for the specific pair you care about. Aggregate exchange volume is nearly irrelevant to your experience if the asset you want trades thinly there. A venue can be excellent overall and a poor place to buy a particular token.
Check jurisdiction and licensing against where you live. An exchange may be reputable and still unable to serve you, or able to serve you without the protections you would have domestically.
And treat the presence of assets nobody else lists as information. Very broad listings on an otherwise obscure venue can indicate low listing standards rather than good coverage.
Derivatives venues are ranked differently
Futures and perpetual swap exchanges are assessed on their own terms, because the relevant risks differ.
Open interest — the total value of contracts outstanding — is the headline figure, and it is a better measure of scale than volume because it represents positions held rather than turnover. Volume can be churned; open interest reflects capital committed.
Funding rates on perpetual contracts indicate whether positioning is skewed long or short, and how expensive it is to hold a position.
Liquidation mechanics and insurance funds matter enormously and are widely ignored. When a market moves violently, positions are force-closed, and whether that process is orderly determines whether losing traders lose only their margin. Venues with thin insurance funds have historically resorted to socialised losses, taking money from profitable traders to cover shortfalls.
Leverage limits are also worth reading as a signal. Venues advertising extreme leverage are competing for a particular kind of customer, and the outcome for that customer is well documented.
Centralised and decentralised are not directly comparable
Decentralised exchanges appear in some rankings alongside centralised ones, and the comparison needs care.
A decentralised exchange does not hold customer funds — trades execute from your own wallet against a smart contract — which removes custody risk entirely and replaces it with smart contract risk. Its volume is verifiable on-chain and therefore much harder to fabricate, though wash trading still occurs, often to farm token incentives.
The trade-offs run in both directions. No account, no identity verification and no ability to freeze your funds; but also no support desk, no recourse for a mistake, and full exposure to contract bugs and to front-running by transaction-ordering bots. Ranking a decentralised venue against a centralised one on volume alone compares two things that fail in unrelated ways.
What none of this tells you
An exchange ranking measures the venue, not the assets on it. A high trust score means the exchange's trading looks real and its operations look sound. It says nothing about whether any particular token listed there is worth owning, and listing is not endorsement.
It is also a snapshot. Exchanges have failed quickly and with little warning, sometimes shortly after appearing in good standing. The prudent conclusion from all of this is not that a well-ranked exchange is safe to leave funds on indefinitely — it is that a well-ranked exchange is a reasonable place to transact, and that coins you are not actively trading belong in a wallet you control.
Coinvilo publishes exchange rankings with trust scores, reported and normalised volume, and coverage for both spot and derivatives venues. Rankings are produced from market data alone; we do not accept payment to feature or rank any exchange. This article is educational and is not financial, investment or tax advice.