When receiving a Bitcoin transfer, the recipient gains insights into the coin's history, including associated addresses and analytics service tags. Conversely, the sender acquires your details, and if the address is reused, they can view its balance, past transactions, and future expenditures.
In collaboration with the Bitcoin mixer Mixer.Money, we explore the preparations necessary for a transaction and how to manage assets afterward while preserving privacy.
What the Buyer Knows and Learns
At the moment of the transfer, the new address is empty. The buyer will only see their transaction and any subsequent movements of those funds.
Reusing an address turns it into a permanent identifier: anyone who has ever sent Bitcoin to it can see all subsequent deposits. Thus, the fundamental rule for privacy is simple: use new details for every transaction.
The second aspect pertains to how the wallet handles funds after the transaction. It spends unspent transaction outputs (UTXO) entirely, and during the next send-off, it might combine, for example, 0.5 BTC from a buyer with 0.2 BTC from a previous client. Such consolidation should be avoided as it allows external observers to link deposits and assess the total amount of your holdings.
This is based on the heuristic of shared ownership of inputs: if a transaction has multiple inputs, analysts are likely to conclude they belong to a single owner. ForkLog has previously examined how addresses are clustered for tracking Bitcoin transactions.
To maintain privacy, two rules should be followed: "one payment — one address" and avoid merging received coins with funds from other parties. The first rule conceals other deposits from the buyer, while adherence to the second is contingent upon your actions in subsequent transfers.
Unknown History
You cannot definitively know where the buyer obtained their Bitcoins. They may have purchased them on an exchange or used a service that was recently sanctioned.
The issue may not arise immediately. As long as the coins are stored in your non-custodial wallet, their origin is of little concern. However, once deposited on an exchange, they will undergo an AML check — and the platform may identify a connection to a blacklisted address.
Furthermore, different exchanges may assess the same coins differently. For instance, on May 19, 2026, the AML service Crystal was the first among major blockchain analytics providers to label addresses of the Belarusian crypto service WHITEBIRD as linked to circumventing international sanctions. Other providers followed suit later. Binance and OKX utilize data from Chainalysis and Elliptic, meaning your verification results may differ from the exchange's conclusions.
Using a deposit address from an exchange is not the ideal method for receiving a large payment. The seller won't have time to verify the coins' origins before the funds are credited, and if issues arise, the assets will already be under the platform's control.
"If you want to avoid risks associated with unknown coin origins and prevent the buyer from tracking their further movement, you can first process the payment through Mixer.Money. In 'Full Anonymity' mode, users receive Bitcoins from cryptocurrency exchanges. This addresses two concerns: severing the link with the coins' previous history and preventing the buyer from tracking your future operations," representatives of the service explain.
How Mixer.Money Operates
When settling through Mixer.Money, there are two options available. The first allows the seller to accept Bitcoins directly at a new address and subsequently anonymize them in 'Full Anonymity' mode if needed.
"If the coins remain in a non-custodial wallet, it is essential to sever the on-chain connection between the counterpart and your holdings. Simply transferring between your addresses is insufficient: analyzing shared inputs and the change address can reconstruct the flow of funds," Mixer.Money notes.
The second option involves the 'Exact Payment' mode, where a mixer acts as an intermediary between the parties. The buyer sends Bitcoins to Mixer.Money, and the seller receives the agreed amount from an exchange address. The remainder is returned to the payer, so there is no direct connection between the parties on the blockchain.
The funds from different clients are not mixed. Incoming payments are split and sent to traders on centralized exchanges, while the recipient is sent Bitcoins from other platforms. ForkLog has analyzed the service's mechanics from the payer's perspective in a separate article.
You can identify the deposit only by the exact amount and TXID, with the sender listed as the exchange.
Single Transaction Guidelines
- Create a new address and link it to the transaction number.
- Provide the buyer with payment details and wait for the transfer.
- Verify the address and amount.
- After confirming the transaction, pass the asset to the buyer.
Once the transaction is complete, determine the future path for the coins. They can either be sent to an exchange considering potential AML checks or remain in a non-custodial wallet and sever the on-chain connection with the buyer using Mixer.Money.