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Updated: June 2026

Case study · Portugal · Residence permit

How Web3 Capital Was Legalized Through BlockchainAudit for Portugal Residence Permit

Web3 capital is honest, but to a bank it looks like money from another planet: there is no conventional income certificate, only wallets and transactions that need to be translated into compliance language. Daniil earned €500k from early token sales and DeFi, but he had no conventional income documentation. We explain step-by-step how we conducted a blockchain audit and obtained a Portugal residence permit.

Dmitry NagyDmitry NagyInternational Tax Consultant, BRIDGESReading time9 min readVerificationReviewed by an expert

This case is based on a real matter. The name and certain identifying details have been changed to protect confidentiality.

BRIDGES client story - How Web3 Capital Was Legalized Through Blockchain Audit for Portugal Residence Permit
Contents

Case at a glance

Situation, solution and outcome in seven lines

Client
Daniil, approximately 24 years old, Web3 professional, from Russia/Thailand
Objective
Portugal residence permit through investment fund
Capital
Approximately €500k from early token sales and DeFi operations
Program
Portugal, Golden Visa (residence permit through investment fund, pathway to EU passport)
Challenge
No conventional income documentation; bank does not accept cryptocurrency
Solution
Blockchain audit of wallets through AML platform + documentation of trail to fiat currency
Result
Capital legalized, residence permit obtained

Client story

Client Story

Where they started

Daniil is only twenty-four, but he is a successful Web3 professional (from the new generation of blockchain-based internet): he earned approximately €500k from early token sales and DeFi (decentralized finance) operations. The money is legitimate, earned through early participation in projects, but earned in a manner that traditional compliance is unaccustomed to seeing.

Why the standard route did not work

The problem arose on the path to obtaining a Portugal residence permit through the fund. To invest the money, it needed to be deposited into a bank and the source of funds verified. But Daniil had no conventional documentation: neither a 2-NDFL certificate nor a salary statement. He only had crypto capital in wallets and a transaction history on the blockchain. To the bank, this looked like "money from nowhere."

What BRIDGES had to solve

The issue was not that the capital was illicit, but that its history needed to be translated into a language understood by the bank and AIMA. The blockchain is transparent—the entire path of the coins is visible—but in itself for compliance purposes it is merely a collection of addresses and hashes. A professional audit was needed that reads the blockchain and provides a clear report on the source of funds.

Why a standard answer would not do

Daniil approached BRIDGES, understanding that the task was not to "deposit crypto," but to legalize crypto capital: conduct a blockchain audit of the wallets, document the clean trail of coins up to their conversion to fiat currency, and provide the bank with a report acceptable to both compliance and immigration authorities.

I am 24 years old, I earned in Web3—early tokens, DeFi, everything legitimate. But I have neither a 2-NDFL certificate nor a salary statement, only wallets and transactions. The bank looks at this like money from the moon. Dmitry conducted a blockchain audit of my wallets through an AML platform, documented the entire trail of coins up to their conversion to euros, and prepared a clean report. The bank accepted it, we completed the fund investment, and I received the residence permit. My crypto was translated into a language the bank understands.

Daniil, 24 · Daniil, Web3The name and certain identifying details have been changed to protect confidentiality.

What Was at Risk

What Was at Risk

Web3 capital is legitimate, but it lacks conventional income documentation: no certificates, no statements, only wallets and transactions. To the bank this is "money from nowhere," even if the blockchain is transparent. Crypto capital must not simply be deposited, but legalized through a professional audit that reads the blockchain.

No conventional income documentation (2-NDFL certificate, salary statements);

  1. 01Bank does not accept crypto as "money from nowhere";
  2. 02Wallet history in itself is incomprehensible to compliance;
  3. 03Without source of funds verification, investment cannot proceed;
  4. 04Legitimate crypto capital appears suspicious due to its form.

The logic of the solution

How the matter progressed: from checks to result

The chart is built from the facts of this matter and shows the logic of the work without decorative or unverified data.

  1. 01
    Stage 1

    We explained that audit is needed, not a certificate. Daniil sought conventional income verification, which Web3 does not have. We showed another path: the blockchain is transparent, and its history can be professionally audited. This shifted the problem from the dead end of "no certificate" to the solvable "we'll do an audit."

  2. 02
    Stage 2

    We conducted a blockchain audit of wallets through an AML platform. The foundation of legalization is analyzing the origin of coins. We ran Daniil's wallets through a specialized AML platform that reads the blockchain and shows transaction history and absence of links to illicit sources. The challenge was to cover the entire path of capital—from early tokens and DeFi to the current balance.

  3. 03
    Stage 3

    We documented a clean trail of coins to fiat. It's not enough to show crypto history—the trail must extend to conversion to regular money. We documented the path of coins up to fiat conversion so there is no gap where crypto "disappears" and money "appears."

  4. 04
    Stage 4

    We accounted for the tax aspect of the capital. To make the origin complete, we established the tax picture—through tax residency in an appropriate jurisdiction with a fixed regime—showing that the income is not only earned but properly documented for tax purposes.

  5. 05
    Stage 5

    We prepared a clean report for the bank. Based on the audit, we compiled a source of funds report the bank understands: here is the origin of coins, here is their path, here is fiat. This is the form that compliance accepts, unlike bare wallet addresses.

Takeaway. Conclusion: crypto capital from Web3 is legitimate, but without documentation looks like "money from nowhere." Blockchain audit through an AML platform reads the transparent blockchain and provides a clear report on the origin of coins to fiat—and capital becomes verified source of funds.

How we solved the problem

How we solved the problem

The work was split into verifiable stages so that every conclusion rested on documents.

  1. 01

    Stage 1

    We explained that audit is needed, not a certificate. Daniil sought conventional income verification, which Web3 does not have. We showed another path: the blockchain is transparent, and its history can be professionally audited. This shifted the problem from the dead end of "no certificate" to the solvable "we'll do an audit."

  2. 02

    Stage 2

    We conducted a blockchain audit of wallets through an AML platform. The foundation of legalization is analyzing the origin of coins. We ran Daniil's wallets through a specialized AML platform that reads the blockchain and shows transaction history and absence of links to illicit sources. The challenge was to cover the entire path of capital—from early tokens and DeFi to the current balance.

  3. 03

    Stage 3

    We documented a clean trail of coins to fiat. It's not enough to show crypto history—the trail must extend to conversion to regular money. We documented the path of coins up to fiat conversion so there is no gap where crypto "disappears" and money "appears."

  4. 04

    Stage 4

    We accounted for the tax aspect of the capital. To make the origin complete, we established the tax picture—through tax residency in an appropriate jurisdiction with a fixed regime—showing that the income is not only earned but properly documented for tax purposes.

  5. 05

    Stage 5

    We prepared a clean report for the bank. Based on the audit, we compiled a source of funds report the bank understands: here is the origin of coins, here is their path, here is fiat. This is the form that compliance accepts, unlike bare wallet addresses.

  6. 06

    Stage 6

    We executed a fund investment and obtained a residence permit. With legalized capital, the bank accepted the funds, the fund investment was completed, and Daniil obtained a Portuguese residence permit. His Web3 capital went through an honest, transparent path and became verified source of funds.

Expert comment

Web3 capital is the future, but old compliance doesn't understand it, and that's directly my field. Daniil is 24, he raised half a million on early tokens and DeFi—legitimately, but he has neither a 2-NDFL form nor any payroll statement, only wallets. The bank looks and sees "money from nowhere." The mistake is seeking conventional documentation; there won't be any. I do it differently: the blockchain is transparent, and it must be professionally audited. I run wallets through an AML platform, document the entire trail of coins from early tokens to fiat, close the tax side, and compile a source of funds report the bank understands. When compliance sees a clean, traceable history rather than a set of addresses, the money is accepted. Fund investment, residence permit. The cost of error here is undeployed capital, so only professional audit and clean trail to fiat.

Dmitry Nagy, International Tax Consultant, BRIDGESDmitry NagyInternational Tax Consultant, BRIDGES

Outcome

What the client received

What was required
How we did it · Result
Verify crypto income
Blockchain audit via AML platform · Origin traced
Extend trail to money
Documentation of path to fiat · Without gaps
Tax aspect
Residency with fixed regime · Income documented
Obtain residence permit
Clean report to bank + fund · Status obtained
Obtain residence permit
Clean report to bank + fund · Status obtained

What was: the client's capital was earned in Web3 without conventional income documentation, and the bank did not accept crypto. What we did: explained that audit is needed, not a certificate; conducted a blockchain audit of wallets through an AML platform; documented a clean trail of coins to fiat; accounted for the tax aspect of the capital; prepared a source of funds report the bank understands. What the client obtained: legalized capital and a Portuguese residence permit.

Practical takeaway

What matters in a similar situation

  • Conclusion: crypto capital from Web3 is legitimate, but without documentation looks like "money from nowhere." Blockchain audit through an AML platform reads the transparent blockchain and provides a clear report on the origin of coins to fiat—and capital becomes verified source of funds.
  • Daniil obtained a Portuguese residence permit on Web3 capital because we translated his wallets and transactions into a language that the bank and immigration authority accept.

FAQ

Questions people ask in a similar situation

01Can you obtain a Portuguese residence permit on crypto capital?

Yes, if you legalize it. Web3 capital has no conventional documentation, so origin is verified through blockchain audit—a professional analysis of wallets that produces a source of funds report the bank understands.

02Why does the bank not accept crypto?

Without traditional income confirmation (certificates, statements) and with an unclear compliance history on wallets, the bank sees "money from nowhere." A blockchain audit is needed to translate the blockchain into intelligible terms.

03What is blockchain audit?

This is an analysis of cryptocurrency wallets through a specialized AML platform that reads the blockchain: it shows transaction history, absence of connections to illicit sources, and the path of coins up to their conversion into fiat.

04Why document the trail to fiat?

To avoid a gap where crypto "disappears" and money "appears." A complete trail—from the origin of coins to their conversion into conventional currency—is what constitutes source of funds confirmation for the bank.

05Is the tax aspect taken into account?

Yes. Full confirmation includes the tax picture—for example, through residency in a jurisdiction with a clear regime—demonstrating that the income is not only earned but also properly documented for tax purposes.

06Capital earned in crypto, but the bank won't accept "money from nowhere"?

We will legalize your Web3 capital: conduct a blockchain audit of your wallets through an AML platform, document a clean trail to fiat, and prepare a comprehensible report for the bank—to arrange a Portugal residence permit through an investment fund.

About the author

Dmitry Nagy

Author: Dmitry Nagy

International Tax Consultant, BRIDGES

I lead the international tax practice at BRIDGES and work at the intersection of tax residence, cross-border reporting and banking compliance. I assess how citizenship, residence, relocation or a new ownership structure may affect the client's tax obligations, banking profile and capital.

My work covers tax residence, CRS and FATCA requirements, source of funds and the questions a bank may raise. These elements should be considered together, because inconsistencies between documents, declarations and the underlying circumstances can create risks after a status has been obtained or an account has been opened.

During the consultation, you will receive an assessment of the tax and banking implications of the proposed decision. Where further work is required, I determine the financial documentation and personally oversee the tax and compliance aspects of the BRIDGES project.

Prepared on the basis of BRIDGES practice and reviewed by a subject-matter expert.

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Anna KovalevskayaHead of Legal, BRIDGES
Anna Kovalevskaya, Head of Legal, BRIDGES

Names and certain details have been changed to protect client confidentiality. The result described reflects one specific situation and is neither a public offer nor a guarantee of a similar outcome. Programme terms are stated as of 2026 and may change - please confirm current parameters with a BRIDGES consultant.