The Travel Rule: Why Crypto Transfers Get Blocked

Where the travel rule comes from

An international bank transfer carries information about who sent it and who receives it. The Financial Action Task Force (FATF) set this principle out in its Recommendation 16, and in 2019 it extended the same duty to virtual asset service providers. Because the information 'travels' with the transfer, it is called the travel rule. Korea wrote it into an enforcement decree of its Act on Reporting and Using Specified Financial Transaction Information, applying it from 25 March 2022 to transfers of 1 million won or more between service providers. The aim is to make money laundering and terrorist financing traceable; for users, it shows up as more information to enter and more checks when withdrawing.

How it works in practice

When you withdraw coins to another exchange, the sending exchange passes details such as the sender's and recipient's names and wallet addresses to the receiving exchange, which checks them against its own customer records before crediting the deposit. None of this is recorded on the blockchain, so exchanges use separate systems to exchange travel rule data. Different exchanges have used different systems, and there were periods when they could not talk to each other. If the name does not match or the data does not arrive, the deposit can be held or sent back.

• Choose or enter the receiving exchange and recipient name when withdrawing
• The sending exchange forwards the data
• The receiving exchange checks it against its customer records
• A mismatch means a hold or a return

The 1 million won threshold

Korea's threshold of 1 million won is the coin's value in won at the moment of transfer, so the same amount of coins can cross it if the price rises. Even below it, some exchanges ask for recipient details or extra checks under their own policies, and the way they do so varies. Splitting a transfer into small pieces to stay under the threshold not only adds fees but can get the transfers flagged as suspicious by the exchange's monitoring.

Sending to overseas exchanges

Korean exchanges often allow withdrawals only to overseas providers that can exchange travel rule data and meet supervisory standards, and they publish lists of the overseas exchanges you can send to. Withdrawals to exchanges not on the list are blocked, and the lists change from time to time. Keep in mind too that an overseas provider not registered in Korea doing business with Korean users can be a problem under Korean law. Coming the other way, the receiving Korean exchange checks where coins came from, so deposits from unsupported sources can be delayed or returned.

Sending to personal wallets

A personal wallet is not a service provider, so there is nobody to exchange travel rule data with. Korean exchanges therefore often require you to register a personal wallet address in advance and verify that it is yours before you withdraw to it or deposit from it. How you register, how ownership is checked and how long you must wait after registering all differ by exchange. For a new address, finish registration before you need to withdraw, and send a very small amount first to confirm it arrives.

Common reasons transfers are blocked or delayed

When travel rule problems pile on top of familiar mistakes such as picking the wrong network, the cause can be hard to find. These are the usual cases. A returned transfer can cost network fees again, and sometimes a return is not possible at all, so getting it right the first time is the cheapest option.

• Choosing the wrong receiving exchange
• The recipient's name is written differently from their account details
• The receiving exchange is not on the withdrawal list
• The personal wallet address was never registered
• Separately from the travel rule, a wrong network or missing memo (tag)

Reading it alongside price gaps

When Korean and overseas prices drift apart, some people want to move coins to capture the gap, but travel rule checks, exchange-by-exchange withdrawal lists and transfer suspensions slow or block that movement. That is one reason the gap does not close easily. This site's Kimchi Premium Radar compares prices on Korean won exchanges with a large overseas exchange on the same basis and flags coins whose transfers are suspended, so you can see whether a coin with a wide gap can actually be moved. Remember that a gap on screen is not a profit you can necessarily collect.

Summary and caution

The travel rule makes the sender's and recipient's details travel with transfers of 1 million won or more between service providers in Korea, and transfers to overseas exchanges or personal wallets add exchange-specific lists and registration steps. Supported exchanges, wallet registration methods and check times vary by exchange and over time, so read each exchange's official notices before you send. This guide explains the rules; it is not legal or investment advice.