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Proof of reserves is becoming more effective, but not all its challenges are technical

Proof of reserves (PoR) has gone from a buzzword to a roar in recent weeks as the crypto world tries to recover from the shock and losses of the current crypto winter. After a flurry of discussion and work, criteria and rankings for adequate PoR are beginning to appear, but the fine points of how to conduct proof of reserves, or even who should do it, remain open questions.

The difference between proof of assets and proof of reserves was pointed out quickly, along with their deficiencies by themselves. Traditional auditors’ attempts at providing PoR were soon frustrated, with major firms stepping up and quickly retreating.

Auditors may never provide the assurance users seek from PoR, Doug Schwenk, CEO of Digital Asset Research (DAR), told Cointelegraph. Audits are done periodically, while crypto trades around the clock “Ideally you would have a way to measure those liabilities and the assets in some kind of real-time,” he said.

DAR provides information and vetting services to major firms in traditional finance and produces the FTSE Russell index in conjunction with the London Stock Exchange. “We like to see proof of reserve. […] It’s not enough for us to say we feel satisfied, but it is certainly better than nothing.” He added:

“In the world that we’re navigating right now, better than nothing is sometimes a good starting place.”

To complicate matters further, centralized finance (CeFi) and decentralized finance (DeFi) platforms present radically different challenges. Thanks to its transparency, “proof of reserve is worthy of calling [itself] proof of reserve” in DeFi, according to Amit Chaurhary, head of DeFi research for Polygon, a scalable blockchain ecosystem compatible with Ethereum.

Related: Proof-of-reserves: Can reserve audits avoid another FTX-like moment?

Chaudhary told Cointelegraph that the zero-knowledge Ethereum Virtual Machine (zkEVM) being developed by the company brings “battled-tested security” to PoR. That software uses Merkle trees to see both positive (asset) and negative (liability) balances and allows a user to verify their accounts while maintaining a high level of privacy. In addition, zero-knowledge protocols can offer dual collateral control for securer settlement and Anti-Money Laundering and Know Your Customer controls while preserving anonymity.

The immutable nature of the blockchain record would allow verification of the audit process. Chaudhary added:

“You can deploy an accounting system on your zkEVM. You can design your own accounting system.”

CeFi presents much greater challenges. “Since liabilities could be incurred off-chain, there is no method to show proof-of-liabilities and that a company can honor all customer deposits,” founder of the Aleph Zero blockchain Matthew Niemerg told Cointelegraph in a statement.

Centralized cryptocurrency exchanges are taking a variety of steps to provide PoR that meets users’ needs. Exchange OKX, which has recently committed to providing fresh PoR monthly, uses PoR based on an open-source Merkle tree protocol along with a Nansen dashboard. Nansen provides real-time, third-party transaction tracking.

OKX told Cointelegraph in a statement that the exchange verifies its holdings of its top three assets, Bitcoin (BTC), Ether (ETH) and Tether (USDT), using a Merkle tree, which allows users to verify their holdings, check that their balance is included in the exchange’s total liabilities and compare OKX assets and liabilities.

“OKX discloses its wallet addresses via the Nansen dashboard,” OKX explained further. This allows users to check OKX holdings in real time “to ensure that OKX has enough reserves on-chain for users to withdraw.”

Despite the efforts of OKX and other exchanges to provide transparency, “no amount of math or cryptography can solve the human problem of deceit and fraud, even if the books are audited by respected, independent third parties. Garbage in, garbage out!“ said Niemerg.

Part of the challenge of providing transparent services is cultural. Tradition finance has the “benefit of living in 2022, where we have almost 100 years of highly regulated capital markets,” Schwenk said.

The DAR seeks to “apply the same rigors as regulators” for “the kind of firms that are used to having a high degree of confidence in their counterparty.” Nonetheless, “It is impossible to get perfect information about any of these counterparties today, because many of them are still getting through some maturity questions and they struggle to be as buttoned up as you see in traditional finance,” Schwenk said.

Original Article

About Jude Savage

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