Samourai Wallet has unveiled a beta version of Whirlpool, a CoinJoin service that enhances transaction privacy. The company previously said that Whirlpool would be released to operate on Dojo, a much awaited bitcoin node built to work with the wallet.

This additional function disassociates crypto senders and their recipients, and can make it tough to keep track of the economical exchange. Samourai, a primary wallet support, is delivering an straightforward-to-adopt layer of economical privateness for mainstream bitcoin customers – and is rising as one of the 1st providers to provide this technologies.


CoinJoin is an anonymization technique first proposed by Gregory Maxwell in 2013. A “Chaumian CoinJoin” integrates chaum blind signatures — a scheme that provides a cryptographically blinded version of a receiving address. This allows the entry and exit of a transaction to be hidden by grouping and scrambling it with a collection of concurrent transactions. As described by ZeroLink, a bitcoin fungibility framework:

“The users connect and provide inputs (and change addresses) and a cryptographically-blinded version of the address they want their private coins to go to; the server signs the tokens and returns them. The users anonymously reconnect, unblind their output addresses, and return them to the server. The server can see that all the outputs were signed by it and so all the outputs had to come from valid participants. Later people reconnect and sign.”

This is seen as a relatively fast and cheap way to add anonymity to CoinJoin transactions. With Samourai adding this feature to its wallet, it could provide a significant and easy-to-adopt layer of privacy for mainstream bitcoin users.

As detailed by its developers, the Whirlpool framework is a fully modular CoinJoin implementation that has been developed through a “heavily modified” fork of the ZeroLink theory.

The Whirlpool framework is a fully modular CoinJoin implementation that has been developed through a “heavily modified” fork of the ZeroLink theory, according to the company.

As noted in previous CoinJoin experiments, the challenge in garnering a mass of participants necessary to conduct blind transactions quickly can be difficult. It took several hours for 100 users of the privacy-centric bitcoin app Wasabi Wallet to gather and collectively execute a CoinJoin. To be sure, this transaction may have been the biggest of its kind.

Apart from the human challenge of organizing a CoinJoin, there are also built-in restrictions on the bitcoin network – such as the limit on the amount of data that can be included in a single transaction block – that limit the viability of CoinJoin. Additionally, some bitcoin enthusiasts believe that some forms of privacy and bitcoin’s built-in transparency are mutually exclusive.