Sent Crypto to the Wrong Wallet? How to Trace, Freeze and Recover a Mistaken Blockchain Transfer Under Turkish Law

Sending cryptocurrency to the wrong blockchain address is one of the most stressful mistakes a digital asset holder can make. Unlike a traditional bank transfer, there is usually no “cancel transaction” button, no central bank capable of reversing the payment, and no blockchain administrator who can simply restore the assets to the sender.

However, one critical distinction is often overlooked:

A blockchain transaction may be technically irreversible without being legally irreversible.

If Bitcoin, Ethereum, USDT or another crypto asset is mistakenly transferred to a wallet controlled by another person, the blockchain may prevent the transaction itself from being cancelled. Yet the recipient does not automatically acquire a lawful right to keep the assets.

Under Turkish law, depending on the circumstances, the sender may have several remedies, including an unjust enrichment claim, interim injunction, provisional attachment, proceedings against the recipient, court requests directed to a crypto exchange, and potentially cross-border recovery measures.

The decisive question is therefore not simply whether the blockchain transaction can be reversed.

The real question is:

Who controls the receiving wallet, can that person be identified, and can the assets be frozen before they are moved again?

1. Can a Cryptocurrency Transaction Be Reversed on the Blockchain?

In most blockchain networks, once a transaction has been confirmed, the sender cannot unilaterally reverse it.

For example, if a user intends to send USDT to:

0xABC...123

but accidentally enters:

0xABC...124

and the transaction is confirmed, the blockchain generally treats the transaction as valid because the sender signed it with the appropriate private key.

The network does not ask whether the sender intended to transfer the assets to that particular person.

Technically, therefore, the transaction may be final.

Legally, however, a completely different question arises.

If the person controlling the recipient wallet has no contractual, commercial or other legal basis for receiving the cryptocurrency, retaining those assets may constitute unjust enrichment.

That distinction is the starting point for any crypto recovery strategy.

2. Turkish Law Does Not Treat a Mistaken Transfer as a Gift

Article 77 of the Turkish Code of Obligations No. 6098 establishes the general principle of unjust enrichment.

A person who becomes enriched from another person’s assets without a valid legal basis is required to return that enrichment. The rule also applies where the supposed legal basis was invalid, did not materialise or subsequently ceased to exist.

This rule can provide the principal civil-law basis for cryptocurrency transferred to the wrong person.

Consider the following example:

A company intends to send 250,000 USDT to a supplier.

Because one character of the wallet address is entered incorrectly, the cryptocurrency is transferred to a wallet belonging to an unrelated person.

There is:

• no contract between the sender and recipient;
• no debt owed to the recipient;
• no purchase;
• no investment agreement; and
• no legal reason for the recipient to receive 250,000 USDT.

The recipient’s assets have increased while the sender’s assets have decreased.

The fact that the transfer was validly recorded on Ethereum, Tron or another blockchain does not necessarily create a valid legal basis for the recipient’s enrichment.

Accordingly, a claim for restitution may arise.

3. The Most Important Question: Where Did the Crypto Go?

Not all mistaken cryptocurrency transfers are equally recoverable.

In practice, recovery prospects depend heavily on the nature of the destination address.

Scenario A: The Wallet Belongs to a Crypto Exchange

This is frequently the most favourable situation.

Suppose cryptocurrency is mistakenly transferred to a deposit address belonging to a customer of a centralised exchange.

The blockchain transaction cannot normally be reversed.

However, the exchange may possess information identifying the person behind the account.

This can transform an apparently anonymous blockchain address into an identifiable defendant.

Türkiye introduced a comprehensive regulatory framework for crypto asset service providers through Law No. 7518 in July 2024. The amendments brought crypto asset service providers within the regulatory framework of the Capital Markets Board of Türkiye and expressly regulated crypto asset trading, transfer and custody activities.

Further secondary regulations entered into force on 13 March 2025, including the Communiqué on the Establishment and Operating Principles of Crypto Asset Service Providers and the Communiqué on Operating Procedures, Principles and Capital Adequacy. These regulations cover, among other matters, custody, transfers, records, internal controls and technological infrastructure.

Anti-money laundering obligations applicable to crypto asset service providers were further strengthened by MASAK regulations in 2025.

Consequently, when assets reach an identifiable exchange account, there may be regulatory and KYC records capable of assisting identification.

Importantly, the exchange will not ordinarily disclose confidential customer information merely because the sender sends an email asking for it.

A court, prosecutor or other competent authority may need to request the information.

This is why acting quickly is crucial.

4. Scenario B: The Crypto Went to a Private Self-Custody Wallet

Recovery becomes more difficult if the recipient uses a private wallet such as MetaMask, Ledger or another non-custodial solution.

A blockchain address does not normally reveal the owner’s legal identity.

Nevertheless, blockchain transactions are publicly traceable on many networks.

The funds may subsequently move:

• from the private wallet to Binance;
• from the wallet to another regulated exchange;
• through several intermediate wallets;
• to a bridge;
• to another blockchain; or
• through decentralised finance protocols.

A blockchain forensic analysis may therefore establish a transaction path connecting the unknown wallet to a centralised exchange.

Once the funds reach a platform holding KYC information, obtaining the identity of the person controlling the relevant account may become possible through legal proceedings.

This is why a wallet appearing anonymous today does not necessarily remain anonymous throughout the recovery process.

5. Scenario C: Crypto Was Sent to an Inaccessible or “Dead” Address

The most difficult situation arises where the destination address is not controlled by anyone capable of returning the assets.

Examples may include certain burn addresses or addresses for which no usable private key exists.

In such circumstances, there may be nobody who has actually become economically enriched.

A court judgment cannot recreate a lost private key.

Therefore, even though the sender suffered an economic loss, a traditional unjust enrichment action may not provide a practical recovery mechanism where no identifiable person controls the assets.

This highlights an important distinction:

Legal recovery requires someone against whom the right can realistically be enforced.

6. What If the Correct Address Was Used but the Wrong Network Was Selected?

Another common mistake is different from sending crypto to the wrong person.

For example:

• USDT is sent through BNB Smart Chain instead of Ethereum;
• a token is sent to an exchange through an unsupported network;
• XRP is sent without the required destination tag;
• XLM is sent without the correct memo;
• an ERC-20 token is transferred to an address controlled by an exchange that does not automatically support the asset.

These cases may sometimes be technically recoverable because the destination platform may still control the relevant private keys.

The issue may therefore be an internal crediting or wallet-access problem rather than a transfer to an unrelated third party.

The first step should normally be a formal application to the exchange’s asset-recovery or compliance department.

Whether recovery is possible will depend on the network architecture, wallet infrastructure and exchange policy.

7. Who Should Be Sued: The Recipient or the Crypto Exchange?

This distinction is extremely important.

A crypto exchange should not automatically be treated as liable merely because it operated the wallet infrastructure through which the mistaken transfer was received.

The primary claim will often lie against the person who received and retained the assets without legal basis.

A useful analogy can be found in Turkish court practice concerning mistaken bank transfers.

In a 2021 decision involving money mistakenly transferred to the wrong bank account, the İstanbul Anadolu 9th Commercial Court of First Instance concluded that the bank had merely acted as the intermediary executing the sender’s instruction. Since the money had entered the third-party recipient’s control, the court considered that the restitution claim should be directed against the recipient rather than the intermediary bank.

Although ordinary bank transfers and blockchain transactions are technically different, the underlying legal distinction may be highly relevant:

The intermediary that technically processes the transfer is not necessarily the person who has been unjustly enriched.

An exchange may nevertheless face separate liability where the loss results from its own contractual breach, security failure, operational error or violation of a specific legal obligation.

That must be assessed separately.

8. Can the Cryptocurrency Be Frozen Before the Recipient Moves It?

This may be the most important practical issue in the entire case.

Crypto assets can be moved internationally within minutes.

A claimant who spends months arguing about the merits of the case may ultimately obtain a favourable judgment against a defendant whose wallet is empty.

For this reason, interim protection should be considered immediately.

Article 389 of the Turkish Code of Civil Procedure permits an interim injunction where changes in the existing circumstances could make obtaining the right significantly more difficult or impossible, or where delay could cause serious damage. The applicant must also establish the basis of the request at the level of approximate proof.

Depending on the structure of the dispute, an application may therefore be considered seeking restrictions relating to identifiable crypto assets or an account maintained with a platform.

Where the claim has become a monetary receivable, provisional attachment may also become relevant.

Article 257 of the Enforcement and Bankruptcy Law allows a creditor of a due and unsecured monetary claim, subject to the statutory conditions, to request provisional attachment over the debtor’s assets, receivables and other rights.

The appropriate remedy depends heavily on how the claim is formulated.

A request seeking return of specific crypto assets and a request seeking payment of their monetary equivalent may involve different procedural considerations.

9. What Should Be Done During the First 24 Hours?

Speed can determine whether a mistaken blockchain transfer is recoverable.

The following evidence should immediately be preserved:

1. the transaction hash or TXID;
2. sender wallet address;
3. recipient wallet address;
4. cryptocurrency and amount transferred;
5. blockchain network;
6. exact date and time;
7. screenshots of the sending platform;
8. wallet transaction history;
9. correspondence showing the intended recipient;
10. invoices or agreements proving the true purpose of the transfer;
11. communications with the exchange;
12. blockchain explorer records; and
13. subsequent transfers made from the recipient address.

The sender should then determine whether the destination address can be associated with a known exchange.

If an exchange can be identified, an urgent written notification should be sent containing the TXID, wallet addresses, amount and explanation of the error.

Where the amount is economically significant, merely submitting an ordinary customer-support ticket may be inadequate.

Legal notification, evidence preservation and an application for interim judicial protection should be considered.

10. Can the Recipient Simply Say, “You Sent It Voluntarily”?

Not necessarily.

A blockchain signature proves that the holder of the private key authorised the blockchain transaction.

It does not necessarily prove the existence of a legal obligation to transfer the asset to the particular recipient.

The sender must therefore distinguish between:

technical authorisation of the blockchain transaction

and

legal intention to confer an economic benefit on the recipient.

Documentation becomes essential.

Suppose the sender intended to pay Company A and has:

• an invoice issued by Company A;
• WhatsApp correspondence containing Company A’s correct wallet;
• an internal payment instruction;
• a screenshot demonstrating the incorrect character;
• transaction records showing the mistaken payment.

These materials may provide persuasive evidence that the recipient was never intended to receive the assets.

11. Is Refusing to Return Mistaken Crypto Automatically a Criminal Offence?

A criminal complaint may be relevant in certain cases, particularly where the circumstances suggest fraud, unlawful appropriation, concealment, laundering or other criminal conduct.

However, a purely civil dispute should not automatically be characterised as a criminal offence.

The mere existence of a mistaken transfer does not by itself prove criminal intent.

The recipient’s conduct after learning of the mistake may nevertheless become relevant.

For example, rapidly transferring assets through numerous wallets or exchanges immediately after receiving formal notice may become important evidence in subsequent civil or criminal proceedings.

Each case requires an individual assessment.

12. What Happens If the Recipient Is Abroad?

Blockchain disputes are frequently international.

The sender may be located in Türkiye, the recipient may reside in another country, and the cryptocurrency exchange may operate through yet another jurisdiction.

Choice-of-law and jurisdiction questions therefore become important.

Article 39 of Türkiye’s International Private and Procedural Law Act No. 5718 specifically addresses unjust enrichment.

Where the enrichment arose from an existing or alleged legal relationship, the law governing that relationship applies. In other situations, unjust enrichment is generally governed by the law of the country where the enrichment occurred. The parties may also expressly choose the applicable law after the enrichment has occurred.

Accordingly, international crypto recovery cases require analysis of:

• the recipient’s residence;
• the exchange’s legal entity;
• the exchange’s terms and conditions;
• the location where enrichment legally occurred;
• applicable jurisdiction clauses;
• applicable law;
• the location of identifiable assets; and
• the availability of interim measures in the relevant jurisdiction.

Blockchain technology may be borderless.

Court enforcement is not.

13. Can Blockchain Analysis Be Used as Evidence?

Yes.

One of the paradoxes of cryptocurrency disputes is that although wallet owners may initially be anonymous, the transaction history itself may be unusually transparent.

Public blockchain records can demonstrate:

• the originating wallet;
• destination wallet;
• exact transfer amount;
• transaction timestamp;
• subsequent transfers;
• consolidation of assets;
• transfers to exchanges; and
• relationships between relevant wallet addresses.

However, identifying a wallet is different from identifying the person controlling it.

The evidentiary strategy must therefore connect blockchain evidence with off-chain evidence such as:

• exchange KYC records;
• IP logs where legally obtainable;
• bank records;
• email accounts;
• phone numbers;
• account-opening documents; and
• withdrawal records.

14. A Practical Recovery Strategy

A high-value mistaken crypto transfer should generally be approached as an asset-recovery case rather than merely a customer-support issue.

The strategy may involve four parallel steps.

First: Trace the assets.

Identify the current wallet and follow subsequent transactions.

Second: Identify the recipient.

Determine whether the wallet belongs to a centralised exchange, company or identifiable individual.

Third: Preserve the assets.

Where legally available, seek an injunction, attachment, account restriction or other protective measure before further transfers occur.

Fourth: Establish the restitution claim.

Use the transaction records, commercial documentation and communications to demonstrate that there was no valid legal basis for the recipient to receive the cryptocurrency.

The faster these stages are initiated, the greater the possibility of effective recovery.

Conclusion: Irreversible on the Blockchain Does Not Mean Irrecoverable in Law

A mistaken cryptocurrency transaction creates two very different realities.

From a technological perspective, the blockchain transaction may be final.

From a legal perspective, the recipient may still have an obligation to return the assets.

Under Turkish law, unjust enrichment provides a potentially powerful basis for recovering cryptocurrency transferred to a person who had no legal entitlement to receive it. Where the receiving address belongs to a regulated crypto platform, KYC and transaction records may also create important opportunities for identification and asset preservation. Türkiye’s crypto regulatory framework has expanded significantly since Law No. 7518 and the secondary regulations introduced in 2025.

The chances of recovery are generally highest where:

• the transaction is detected quickly;
• the recipient wallet is traceable;
• the funds reach a centralised exchange;
• the recipient can be identified;
• documentary evidence clearly proves the transfer was accidental; and
• interim judicial measures are sought before the assets disappear.

The key principle is simple:

You may not be able to reverse the blockchain transaction—but you may still be able to recover the cryptocurrency from the person who received it.