In the fast-evolving world of digital assets, trust and transparency are not just ideals—they are necessities. As one of the leading cryptocurrency exchanges, OKX continues to set industry benchmarks with its 32nd Proof of Reserves (PoR) report, confirming $28.4 billion in primary assets held in reserve. This milestone reinforces OKX's unwavering commitment to security, solvency, and user confidence.
Why Proof of Reserves Matters
For any crypto exchange, the safety of user funds is paramount. At OKX, we ensure a 1:1 reserve ratio—meaning every user deposit is fully backed by equivalent on-chain assets. This guarantees that customer balances are never at risk due to platform insolvency.
Our on-chain wallet holdings are publicly verifiable, allowing anyone to independently confirm that user deposits are fully covered. By publishing monthly PoR reports and leveraging advanced cryptographic techniques, OKX leads the industry in transparency, liquidity assurance, and regulatory compliance.
This level of accountability doesn’t just protect users—it strengthens the entire crypto ecosystem by fostering trust among investors, institutions, and regulators alike.
👉 Discover how you can verify your assets are securely backed today.
What Is Proof of Reserves?
Proof of Reserves (PoR) is a cryptographic method used to prove that a cryptocurrency custodian holds sufficient reserves to cover all customer deposits. It ensures that exchanges remain solvent and that user funds are fully backed—without exposing sensitive individual account data.
PoR provides:
- Transparency: Publicly verifiable proof of asset holdings.
- Security: Confirmation that customer assets are not misused or leveraged.
- Privacy: No disclosure of personal balances or transaction details.
At OKX, our PoR covers 22 major cryptocurrencies, including Bitcoin (BTC), Ethereum (ETH), and leading stablecoins like USDT and USDC—assets known for strong liquidity and market acceptance.
How OKX’s Proof of Reserves Works
OKX employs a cutting-edge, open-source verification system powered by zk-STARKs (Zero-Knowledge Scalable Transparent Arguments of Knowledge). This technology allows us to cryptographically prove the accuracy of our reserves while preserving user privacy.
The process involves three key steps:
- Proving Account Assets
A snapshot of all user balances is taken and encrypted using a Merkle tree structure. This creates a tamper-proof summary of total liabilities. - Verifying Wallet Ownership
We publish a list of our on-chain wallet addresses, each containing a signed message: "I am an OKX address." This proves ownership without revealing private keys. - Calculating the Reserve Ratio
The total value of assets in OKX’s on-chain wallets is compared to the total user liabilities. If reserves equal or exceed liabilities, the 1:1 ratio is confirmed.
Understanding zk-STARK Technology
zk-STARK is a zero-knowledge proof system that enables efficient, trustless verification. Unlike traditional methods, it doesn’t require a trusted setup and offers robust scalability.
Key benefits:
- No data exposure: Individual balances remain private.
- High efficiency: Fast verification even with large datasets.
- Transparency: Fully open-source and auditable.
OKX uses zk-STARKs to validate three critical constraints across all user accounts:
- Total Balance Constraint
The sum of all user balances matches the total assets claimed by OKX. - Non-negative Constraint
No account has a negative balance—ensuring solvency and accurate accounting. - Inclusion Constraint
Every user’s balance is included in the Merkle tree, proving full coverage.
These checks collectively confirm the integrity of our reserve claims.
How to Perform Self-Verification
Empowering users is central to our mission. With OKX’s open-source tools, anyone can independently verify our Proof of Reserves. Here’s how:
🔹 Verify the Inclusion Constraint (September 2024 Onwards)
Ensure your balance is part of the official audit:
- Go to your account’s Proof of Reserves section and click Details.
- Click Copy Data and save the string as
_inclusion_proof.jsonin a new folder. - Download the zk-STARK Validator tool from OKX and place it in the same folder.
- Run the validator—the tool will automatically process your file.
✅ Success message:
"Inclusion constraint validation passed"
❌ Failure message:
"Inclusion constraint validation failed"
You can access historical Merkle trees from November 2022 onward, including v2 updates from March 2023 and zk-STARK records through August 2024.
🔹 Verify Total Balance & Non-Negative Constraints
Confirm the accuracy of OKX’s aggregate claims:
- From the Liability Report tab, download the latest zk-STARK file.
- Unzip it to reveal
sum_proof_data.json. - Place the zk-STARK Validator in the same directory.
- Launch the validator to run the check.
✅ Success message:
"Total sum and non-negative constraint validation passed"
❌ Failure message:
"Total sum and non-negative constraint validation failed"
This step ensures that no hidden debt exists and that total reserves match reported user balances.
🔹 Verify Wallet Address Ownership & Balance
Check if OKX truly controls its published wallets:
- Download the official list of OKX wallet addresses.
- Use the open-source verification tool to extract the BTC address, signature, and message ("I am an OKX address").
- Input these into a third-party or OKX-provided signature verifier.
- Confirm ownership via cryptographic signature match.
- Cross-check the wallet balance at a specific block height using blockchain explorers.
Successful verification proves both ownership and asset accuracy.
👉 Start your own independent audit with just a few clicks.
Frequently Asked Questions (FAQ)
Q1: What is the purpose of Proof of Reserves?
Proof of Reserves ensures that a crypto exchange holds enough assets to fully back all user deposits. It promotes transparency, prevents insolvency, and builds long-term trust in digital asset platforms.
Q2: How often does OKX publish PoR reports?
OKX publishes Proof of Reserves reports monthly, maintaining consistent oversight and accountability. Our 32nd report confirms $28.4B in verified assets as of June 2025.
Q3: Can I verify my own account balance in the PoR?
Yes! Using the inclusion proof feature and OKX’s open-source zk-STARK validator, you can confirm that your balance was included in the audit—without revealing personal data.
Q4: Does Proof of Reserves guarantee exchange safety?
While PoR is a critical indicator of financial health, it should be combined with other factors like insurance funds, regulatory compliance, and cold storage practices for full security assurance.
Q5: Why use zk-STARK instead of other zero-knowledge proofs?
zk-STARK offers superior scalability, transparency, and resistance to quantum attacks compared to alternatives like zk-SNARKs. It also eliminates the need for a trusted setup, enhancing trustlessness.
Q6: Are stablecoins included in OKX’s reserves?
Yes. Major stablecoins such as USDT, USDC, and DAI are part of our reserve portfolio and undergo the same rigorous verification process as other supported assets.
Leading Through Transparency
OKX’s Proof of Reserves isn’t just a compliance exercise—it’s a foundational principle. With over $28 billion in verifiable assets, public wallet disclosures, and advanced zk-STARK proofs, we provide unmatched clarity in an often-opaque industry.
By making our systems open-source and empowering users to self-verify, we shift from blind trust to proof-based confidence.
👉 Join a platform where your assets are always 1:1 backed and fully verifiable.
Cryptocurrency innovation thrives on trust. At OKX, we don’t ask you to take our word for it—we give you the tools to prove it yourself.