OKX
Best for the most frequent reserve proofs under an EU licence
How it rates
- Monthly reserve proofs — the most frequent cadence here
- Zero-knowledge verification rather than an aggregate attestation
- MiCA authorisation covering nine of ten licensable services
- Public fee page does not display rates
- A Maltese AML penalty accompanied the licensing process
- Year established not published in the independent dataset
Each indicator scores 2, 1 or 0. A pillar is the points earned over the points available; the overall score is the weighted sum. Every source below is public — check any of them yourself.
- MetAuthorisation from a recognised financial regulator, evidenced publicly
MiCA CASP licence, MFSA Malta, January 2025.
casptracker.eu/exchange/okx/ - MetProof of reserves with per-account verification
Monthly zk-STARK proofs, per-account verification.
www.okx.com/proof-of-reserves - MetMost recent reserve publication within 12 months
45th consecutive monthly publication reported.
www.crypto-reporter.com/press-releases/post-mica-trust-becomes-verifiabl - MetReserve method documented publicly
zk-STARK method described by the company.
www.okx.com/en-eu/learn/our-mica-license - MetNo unremediated custody-loss incident on the public record (24 months)
None identified in public reporting at this check.
www.okx.com/proof-of-reserves
- Met
- Not metEntry-tier maker and taker rates displayed
Page describes tiering; rates not displayed at this check.
www.okx.com/fees - Not metVolume tiers with thresholds displayed
Tiering mentioned without thresholds at this check.
www.okx.com/fees - Not met
- Met
- MetListed with an independent trust score
CoinGecko exchange dataset, trust score 10.
api.coingecko.com/api/v3/exchanges - Met
- Met
- Met
- PartialOperating for five years or more
Year established not published in the dataset at this check.
api.coingecko.com/api/v3/exchanges
- MetRegulatory status disclosed publicly
Licence and scope stated on the company's own page.
www.okx.com/en-eu/learn/our-mica-license - MetOperating entity and jurisdiction identifiable
OKX Europe Limited, Malta.
casptracker.eu/exchange/okx/ - MetReserve disclosure on own domain
Programme hosted on the company's own site.
www.okx.com/proof-of-reserves - MetIndependently corroborated by a public register
Licence recorded in an EU CASP register tracker.
casptracker.eu/exchange/okx/ - PartialEnforcement or incident history on the public record
Maltese AML penalty reported alongside licensing.
www.financemagnates.com/cryptocurrency/okx-secures-malta-payment-license
- MetHelp centre reachable without an account
Reachable without an account at this check (HTTP 2xx).
www.okx.com/help - MetPublic status page
Reachable without an account at this check (HTTP 2xx).
www.okx.com/proof-of-reserves - MetPublic API documentation
Reachable without an account at this check (HTTP 2xx).
www.okx.com/docs-v5/en/ - Met
- MetPublic legal and terms documentation
Reachable without an account at this check (HTTP 2xx).
www.okx.com/help/terms-of-service
OKX runs the most frequent reserve programme in this group — monthly, verified with zero-knowledge proofs — and holds a MiCA authorisation from the Malta Financial Services Authority. Its public fee page describes volume tiering without displaying rates, which is the one place it falls behind a group that otherwise publishes numbers.
Our assessment
OKX runs the most frequent reserve programme in this comparison — monthly rather than quarterly — and verifies it with zero-knowledge proofs rather than a plain Merkle tree. It holds a MiCA authorisation from the Malta Financial Services Authority covering nine of the ten licensable services. Its weak point is unusual for a venue this size: the public fee page does not show rates.
Monthly proofs, zero-knowledge verification
Public reporting puts the run at 45 consecutive monthly publications. The zero-knowledge construction lets a customer confirm their balance is inside the attested total without exposing anyone else's position — the same guarantee a Merkle proof gives, with better privacy properties. On cadence and method this is the strongest reserve programme in the table.
A settled European position
OKX Europe holds its MiCA licence from the MFSA, granted in January 2025, covering custody, execution and exchange among other services. The same licensing process was accompanied by a Maltese AML penalty, which belongs in the record alongside the authorisation rather than being quietly omitted — our transparency pillar records both.
Where the disclosure stops
The public fees page describes volume tiering but did not display actual rates when we checked, so a prospective user cannot compare cost before opening an account. Three of our five cost indicators score zero as a result. That is a genuine gap rather than a technicality: cost transparency is 20% of the score in this category precisely because comparing fees is the most common reason a reader visits a page like this one.
Who it suits
OKX fits readers who weight reserve verification and EU authorisation heavily and are prepared to check pricing inside the platform rather than before signing up. Anyone whose decision turns on comparing fee schedules will find Binance and Kraken publish theirs in full.
How rivals compare
Frequently asked
How often does OKX publish proof of reserves?
Monthly, using zero-knowledge proofs that allow a customer to verify inclusion without revealing other users' data.
Is OKX authorised in the European Union?
OKX Europe holds a MiCA authorisation from the Malta Financial Services Authority granted in January 2025, covering nine of the ten licensable services.
What are OKX's trading fees?
The public fees page describes volume tiering but did not display rates at our check, so we do not quote a figure. Check the platform directly before trading.