How to Prove You Held Crypto on an Exchange That Deleted Account History

09 October 2026

If an exchange has deleted your account history, proving you held crypto there becomes harder but is still possible with independent records you created before the collapse. The core strategy is to assemble evidence from sources the exchange did not control - transaction records from the blockchain, withdrawal or deposit confirmations from other exchanges or wallets, tax records, and any screenshots or emails you saved before the data vanished.

What makes this situation different

When an exchange fails and deletes account history, you have lost the primary source of proof - the exchange’s own database. This usually happens because the exchange shuts down its servers, a court orders data preservation but the operator fails to comply, or the exchange simply disappears. The problem is compounded if the exchange never issued regular statements or if its customer portal went offline before you could download records.

You are no longer trying to prove your balance from the exchange’s records. You are now reconstructing your holdings from your own trail of transactions.

Step 1: gather every external transaction record

Start with records of crypto moving onto or off the exchange. These are your strongest pieces of evidence because they are independently verifiable on the blockchain.

• Deposit addresses. If you sent crypto from a personal wallet to the exchange, you have a transaction hash and a receiving address. The blockchain shows that address belonged to the exchange (you can often identify it from known exchange wallets or by checking whether the address appears in other users’ reports). This proves you controlled funds that arrived at the exchange.
• Withdrawal addresses. If you withdrew crypto from the exchange to a wallet you still control, the withdrawal transaction is on-chain. Even if the exchange deleted its internal ledger, the blockchain records that a specific exchange address sent crypto to your wallet on a specific date.
• Fiat or stablecoin deposits. Bank or credit card statements showing transfers to the exchange’s payment processor, or to a known exchange bank account, establish that you funded an account. These records are not on-chain but are independently auditable by your bank.
• Correspondence. Emails from the exchange confirming deposits, withdrawals, or account changes are valuable. If you have them, they include timestamps and transaction identifiers.

Step 2: Locate Any Screenshots or Local Backups

Screenshots of your exchange account dashboard, portfolio page, or transaction history - taken before the data was deleted - are admissible evidence in most claims processes and court proceedings. The key is that they were created before the collapse, so the date stamp on the file or the metadata matters.

• Check your phone, computer, cloud storage, and any old backups.
• If you used a portfolio tracker app, export its data. Apps that pull data from exchange APIs often retain historical snapshots.
• If you ever exported a CSV or PDF statement from the exchange, even an old one, that document is useful.

Step 3: compile tax records

If you reported crypto gains or losses to a tax authority, those filings typically include cost basis and transaction logs derived from exchange data. Tax filings are signed under penalty of perjury, which gives them weight. You can request transcripts from your tax authority if you no longer have the original returns.

Step 4: collect third-party confirmations

• Other exchanges. If you sent crypto from the collapsed exchange to another exchange, the receiving exchange’s records show the incoming transaction. You can request a statement from that exchange.
• Custodial wallets or services. If you used a third-party service (like a lending platform or a staking service) that received funds from the exchange, their records may show the source.
• Counterparties. If you traded peer-to-peer on the exchange, the other party may have records of the trade.

Step 5: file your claim with what you have

When you submit a claim in an exchange bankruptcy or insolvency proceeding, you will likely need to provide:

• Your name and contact information.
• The exchange account identifier (if you remember it).
• A sworn statement or affidavit describing your holdings, how you acquired them, and why you cannot provide exchange records.
• Copies of all supporting documents you gathered in steps 1 - 4.

Be honest and precise. Overstating your balance or fabricating records is fraud and can disqualify your claim or lead to legal penalties.

What the claims administrator will do

The administrator or trustee will cross-check your evidence against whatever fragmentary data survived from the exchange - partial database dumps, bank records, or blockchain analysis. They may also look for consistency with other claimants’ evidence. For example, if multiple people report deposits to the same exchange address on the same day, that corroborates that the exchange controlled that address.

Your claim is more likely to be accepted if your evidence is:

• Timely. Screenshots or emails from before the collapse are stronger than after.
• Consistent. Your story matches on-chain data and other claimants’ reports.
• Specific. Exact amounts, dates, and transaction IDs are better than general statements.

What you cannot replace

If you never moved crypto onto or off the exchange - meaning you only traded internally and never deposited or withdrew - and you have no screenshots, emails, or tax records, you may have no way to prove your holdings. The exchange’s deleted data was the only record. In that case, you are unlikely to recover anything through the formal claims process, though you may still join a class action or rely on public pressure on the exchange’s operators.

Practical Takeaways

• Start now. The longer you wait, the harder it becomes to locate records and the more likely blockchain data becomes stale or overwritten.
• Save everything. Even a single deposit confirmation email from years ago can establish that you had an account.
• Do not rely on the exchange. The only proof you can truly control is the proof you created and stored yourself.

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