Germany's Proof of Reserves Deadline Brings Transparency to Exchange Balances
In Germany, several trading venues have imposed deadlines for investors to sell or withdraw their balances by August 31, 2026. As a result, many are left wondering if the exchange truly holds the assets it claims. This is where proof of reserves comes in, an audit procedure designed to show that a custodian genuinely holds its customers' assets.
The process involves an independent auditor taking an anonymized snapshot of account balances and condensing them into a specific data structure, which is then compared with holdings on the exchange's blockchain addresses. The addition of a signature from the exchange using the private keys of audited addresses proves control over these holdings.
A key concept in this process is the Merkle tree, a tree structure built from checksums that preserves customer balances while preserving individual anonymity. If a single digit of any balance changes, the entire Merkle root will change. This makes it impossible for an exchange to quietly remove individual balances after the fact without the published root value ceasing to match.
Cryptoticker.io recently provided an analysis and example of how to check your own balance using Kraken's publicly available method. The process involves logging in, selecting an audit, calculating your record ID and Merkle leaf ID using specific hashing methods, and then checking if this matches the published tree.