Reconstruct Exchange History
Binance, Kraken & Co.
Exchange closed or the export incomplete? TX-Partner brings the missing trading history back.
30 minutes · Consultation and quote free
Robert & Johannes · personally review your data
Why the CSV export alone is not enough
Exchanges deliver their history in several views and formats. It only becomes complete once they are reconciled.
The API starts on connection day
Exchange APIs deliver data only from the connection date and not every transaction type. Bought in 2021, connected in 2024: the old trades are missing.
Every export means something else
Same column names, different meaning. Whether the fee sits inside the amount and which time zone the timestamps use has to be checked per exchange.
The same exchange imported twice
API and CSV imported side by side create duplicates. Two exactly opposite balances of the same asset are the typical sign.
Which exchange cases create the real work
The effort does not depend on the name of the exchange, but on which source is still reachable.
Access open, history incomplete
The account still exists, but the API does not reach far enough back. Older years then only come in through the CSV export.
Products beyond spot trading
Earn, staking and futures often sit in separate areas. At Binance, CoinTracking keeps spot and earn apart, so the reward history is its own source.
Several accounts on one exchange
They belong in one depot, separated by trade group. Otherwise deposits and withdrawals do not net out and the balance turns negative.
Closed exchange, no export left
On-chain only deposits and withdrawals are visible, trades inside the exchange are not. What remains is the GDPR Article 15 data request.
How the reconstruction worksWhere a missing exchange history hits the report
Tax tools calculate with what has been imported. If a purchase year is missing, the tool sets the cost basis to zero and the full proceeds become a gain.
Cost basis of zero
CoinTracking raises a short warning and carries 0.00 in the cost basis column, Blockpit flags the missing history.
The holding period is no longer evidenced
The acquisition date disappears along with the cost basis. The 12-month holding period can then no longer be derived from the data.
The gap travels along
The place of the warning is rarely the place of the cause. A missing origin runs through every transfer and only surfaces at the sale.
Imported twice costs the same
Duplicates push the balance negative and create mirrored positions. In practice a clean rebuild from fresh exports is what helps.
Sources first, import second.
Sources collected
Every exchange, wallet and chain ever used goes on the list. Typically forgotten: the first exchange and briefly used intermediate accounts.
History reconstructed
CSV exports, the GDPR Article 15 data request and on-chain data from the explorer, in that order.
Filed in the tool
The raw data is brought into import format and checked against the balance per asset. Then TX-Partner triggers the recalculation.
Complete exchange history for good.
30 minutes that make the difference.
Book a consultation 30 minutes · Consultation and quote freeIf we are not the right fit for your case, we will say so in the call.
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