An AML check for crypto transactions is a routine screening that looks at where coins came from and where they are going. If you use a wallet that doesn't ask for documents, you may wonder how that fits together. This guide explains what is checked, what happens when a transfer is flagged and how to keep your own transfers clean.
We use Banknode as the example throughout, because it combines sign-up without documents with screening of every transaction, incoming and outgoing.
What AML means in crypto
AML stands for anti-money laundering. It is a set of practices meant to stop illicit money from entering or moving through financial services. Banks have applied these controls for a long time, and crypto services have adopted similar ones.
In crypto, AML work leans heavily on the blockchain itself. Most public blockchains record every transfer openly, so analytics tools can trace how funds moved between addresses and estimate the risk attached to them.
That is the key difference from traditional finance. A crypto AML check doesn't need to know who you are to see that a coin passed through, for example, an address linked to a known scam a few transfers earlier.
What an AML check for crypto transactions looks at: risk, not identity
AML screening of a transaction follows the money trail. It assesses the addresses involved and the history of the funds, not your passport or your selfie. Typical risk signals include:
- Direct or indirect links to addresses tied to scams, hacks or ransomware.
- Funds coming from darknet marketplaces or other illicit services.
- Addresses that appear on sanctions lists.
- Use of mixing services designed to hide where coins came from.
- Patterns that look like attempts to split up or layer suspicious funds.
Screening usually produces a risk assessment rather than a simple yes or no. Low-risk funds pass without any action from you, which is the normal outcome for ordinary transfers between ordinary people and services.
Both directions matter. A deposit is checked for where it came from, and a withdrawal is checked for where it is going. Sending funds to a high-risk address can be stopped just like receiving them from one.
What happens if a transaction is flagged
If screening finds a meaningful link to illicit activity, the transaction is not processed automatically. Depending on the level of risk, it can be held for review or blocked.
A delay for review doesn't mean you did something wrong. Coins can pick up a risky history before they reach you, for example if a counterparty received them from a compromised address. The review is there to work out what actually happened.
If funds are clearly tied to crime or sanctions, a service generally can't let them move freely. Blocking in that situation protects the platform and its other users, and it reflects the rules that financial services have to follow.
If one of your transfers is held for review, don't try to push the same funds through another route. Check the FAQ first, and keep the transaction hash and details about where the funds came from at hand.
How AML and no-KYC work together in Banknode
Banknode is a crypto wallet without KYC: you sign up with an email and a one-time code. There is no passport upload, no selfie and no proof of address.
No KYC does not mean no rules. Every incoming and outgoing transaction in Banknode passes AML screening, and funds linked to illicit activity can be delayed for review or blocked. Identity checks are skipped; checks on the money are not.
It also means no KYC is not the same as anonymity. Blockchain transfers are public and traceable, and screening applies to everyone. You are responsible for following the laws of the country where you live, and those rules differ from place to place.
The same thinking runs through account protection as a whole. Banknode is a custodial wallet with 2FA for sign-in and withdrawals, and it mentions ISO/IEC 27001, SOC 2 and PCI DSS compliance. You can read more on the security page.
How to keep your transfers clean
Most of this is common sense, but a few habits make a real difference to how smoothly your transfers go:
- Buy and receive crypto only from sources you trust, such as established services or people you actually know.
- Be careful with peer-to-peer deals with strangers, and ask yourself where their coins might have come from.
- Avoid mixing services. Even if your goal is privacy, mixed coins tend to be treated as high risk.
- Double-check withdrawal addresses, and never send to an address you got from an unsolicited message.
- Keep simple records: transaction hashes, dates and who you dealt with. They help a lot if a review ever happens.
- Send USDT and other tokens on the correct network. Our guide to USDT networks explains how to choose.
If an unexpected small deposit arrives from an unknown address, don't rush to move it around. Unsolicited transfers can be spam or the first step of a scam, and passing them on mixes their history with your own funds.
Finally, be wary of anyone offering to "clean" coins or to help you get around screening. Legitimate services don't offer this, and such offers are often scams in their own right.
If you want a wallet where sign-up takes only an email and every transfer still goes through AML screening, you can open a Banknode account in the Telegram mini app or the web app and turn on 2FA right after you sign up.