How do I show that my crypto profit was earned honestly?

By making the build up traceable: the first purchase, the route the holdings took and the moment of sale, each tied to source data that a reader can verify.

Can that be done without old exchange history?

Yes. The on-chain record and your bank statements usually carry the chain, and the report states which parts could not be traced.

Who is this report intended for?

A bank, an accountant, a civil-law notary or a tax adviser. It is written to be read by someone who does not know your case.

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I have to show that my crypto profit was earned honestly, who can help?

By R.T. (Tyler) Dijst, blockchain investigator at Paucitas

Paucitas records where your crypto profit came from and how it was built up, so that you can show a crypto profit was earned honestly in a document a bank or an accountant can check for itself. You supply your transaction data and documents, we verify each step on the blockchain and put the route on paper.

What Paucitas does

We reconstruct the chain from your first purchase to the moment you realised a profit. One anonymised case: an entrepreneur had bought ether in small amounts between 2016 and 2021 across three platforms, two of which have since ceased to exist. The profit on sale in 2025 raised questions at his bank, and the missing platform history was the whole problem.

By reading the addresses back on the chain and tying the earliest deposits to his own bank statements, the build up became traceable again, including the years for which no export existed.

What you supply

You supply the exports from your exchanges, the addresses of your wallets and the bank statements of the deposits with which you originally started. Anything that explains a jump in the figures belongs with it: a sale agreement, a bonus, a gift.

Anything that explains a jump in the figures belongs with the exports: a sale agreement, a bonus, a gift, an inheritance. A gap that is named is far less trouble than a gap a reviewer finds.

What you receive

You receive a report with a summary at the front, a timeline of the build up, the transaction table and the annexes. In practice that saves a round of follow up questions, because the reviewer can see per line which source it rests on.

The report does not argue that the profit is lawful. It records how the profit arose, and that distinction is what makes it usable for a bank, an accountant or a civil-law notary.

The report does not argue that the profit is lawful, and that distinction is the reason it works. It records in four parts how the profit arose: the timeline of the build up, the transaction table with a source per line, the account of the method, and the annexes. Showing that a crypto profit was earned honestly is then a matter of reading, not of believing.

Where a year cannot be reconstructed, the report says so in the same plain terms. A named gap costs you one sentence of explanation; an unnamed one costs a round of correspondence.

How to get started

You contact us with a short description of the question that was asked and who asked it. We set the scope with you before anything starts. Use the contact page, and send the request itself along if you have it in writing.

Send a short description of the question that was asked and who asked it. We set the scope with you before anything starts, so you know what it covers and what it costs.

Whether a particular bank or authority accepts the substantiation remains for that party itself.

Further reading