Proof of Reserves – top 9 exchanges

Compare which exchanges have independent audits, their coverage ratios, and when they last published reserve data.

Data as of 2026-04-01

Exchange	Auditor	Audit date	Coverage	BTC reserves	ETH reserves	USDT reserves	Status	Link
Binance	Mazars (former), self-attestation via Merkle Tree	2025-12-15	102%	597K	4.10M	$18.0B	Self-attested	PoR
Bybit	Hacken (CER.live)	2025-12-01	101%	71K	510K	$4.2B	Audited	PoR
OKX	Self-attestation via Merkle Tree	2026-01-20	103%	92K	670K	$5.8B	Self-attested	PoR
MEXC	Self-attestation	2025-11-10	105%	12K	95K	$980M	Self-attested	PoR
Gate.io	Armanino LLP (former), self-attestation now	2025-12-01	104%	28K	240K	$1.9B	Partial	PoR
HTX	Self-attestation	2025-09-15	101%	22K	180K	$1.1B	Self-attested	PoR
BingX	Self-attestation via Merkle Tree	2025-12-20	102%	14K	110K	$850M	Self-attested	PoR
Bitget	Hacken	2026-01-05	105%	19K	142K	$1.4B	Audited	PoR
KuCoin	Mazars (former)	2025-10-10	107%	10K	78K	$620M	Partial	PoR

Binance

Self-attested

Audit date

2025-12-15

Coverage

102%

BTC reserves

597K BTC

ETH reserves

4.10M ETH

USDT reserves

$18.0B

Auditor: Mazars (former), self-attestation via Merkle Tree

Monthly reserve snapshots. Merkle Tree for self-verification.

PoR→

Bybit

Audited

Audit date

2025-12-01

Coverage

101%

BTC reserves

71K BTC

ETH reserves

510K ETH

USDT reserves

$4.2B

Auditor: Hacken (CER.live)

Full audit by independent auditor Hacken. Asset coverage above 100%.

PoR→

OKX

Self-attested

Audit date

2026-01-20

Coverage

103%

BTC reserves

92K BTC

ETH reserves

670K ETH

USDT reserves

$5.8B

Auditor: Self-attestation via Merkle Tree

Monthly reserve snapshot with public Merkle verification.

PoR→

MEXC

Self-attested

Audit date

2025-11-10

Coverage

105%

BTC reserves

12K BTC

ETH reserves

95K ETH

USDT reserves

$980M

Auditor: Self-attestation

Self-attestation quarterly. No separate independent auditor.

PoR→

Gate.io

Partial

Audit date

2025-12-01

Coverage

104%

BTC reserves

28K BTC

ETH reserves

240K ETH

USDT reserves

$1.9B

Auditor: Armanino LLP (former), self-attestation now

Previously full Armanino audit, now self-attestation.

PoR→

HTX

Self-attested

Audit date

2025-09-15

Coverage

101%

BTC reserves

22K BTC

ETH reserves

180K ETH

USDT reserves

$1.1B

Auditor: Self-attestation

Snapshots less frequent than top exchanges. No independent auditor.

PoR→

BingX

Self-attested

Audit date

2025-12-20

Coverage

102%

BTC reserves

14K BTC

ETH reserves

110K ETH

USDT reserves

$850M

Auditor: Self-attestation via Merkle Tree

Regular Merkle snapshots. User-side verification via public tool.

PoR→

Bitget

Audited

Audit date

2026-01-05

Coverage

105%

BTC reserves

19K BTC

ETH reserves

142K ETH

USDT reserves

$1.4B

Auditor: Hacken

Monthly Hacken audit. Coverage consistently above 100%.

PoR→

KuCoin

Partial

Audit date

2025-10-10

Coverage

107%

BTC reserves

10K BTC

ETH reserves

78K ETH

USDT reserves

$620M

Auditor: Mazars (former)

Coverage 107%. Mazars stopped working with crypto exchanges in 2023, audit status uncertain.

PoR→

Data collected from each exchange's public Proof of Reserves pages. Updated manually each quarter. A coverage ratio above 1.0 means reserves cover the exchange's liabilities to users.