Sparrow Bitcoin Wallet Adds Support To Whirlpool CoinJoin

The open-source desktop wallet now allows users to CoinJoin directly to cold storage after a configurable number of mixing rounds.

Sparrow Wallet, an open-source Bitcoin wallet focused on self-sovereignty and usability, has added support for the Whirlpool CoinJoin implementation in its newest release. Sparrow 1.5.0 allows users to mix unspent transaction outputs (UTXOs) via the new integration, both on the mainnet and testnet Bitcoin networks.

Whirlpool is a Chaumian CoinJoin implementation built by the developers of Samourai Wallet. Like other implementations, it allows Bitcoin users to enjoy forward-looking privacy by breaking assumptions blockchain observers may have about their coins and ownership.

At its core, a CoinJoin is a Bitcoin transaction, albeit a special one, in which different people trustlessly combine their inputs into the same transaction, later receiving their dutiful outputs. It seeks to break transaction heuristics that chain analysis companies use to cluster addresses together in the hopes of breaking the pseudonymity provided by Bitcoin. 

By implementing Whirlpool, Sparrow increases the reach of that CoinJoin implementation into more users hence helping increase liquidity in the protocol and, at large, improve the fungibility of all bitcoin. Fungibility is a central aspect of money that prevents two coins, or UTXOs in Bitcoin, from being distinguished from each other or preferred over one another.

Sparrow’s new release also allows users to send their CoinJoin outputs to an external, open wallet after a configurable number of mixing rounds, for example, a cold storage wallet, and an option to optimize transactions for privacy (with Stonewall) or efficiency. Additionally, the desktop wallet now provides a simple privacy analysis of a constructed transaction before sending and a better UX for its Tor integration.

As a censorship-resistant technology, ensuring the fungibility of coins and the privacy of users of the Bitcoin network is paramount to prevent coercion and secure individual liberties. Whereas totalitarian governments have for centuries been able to enforce arbitrary rules due to their control over people’s money, Bitcoin provides people with the power to fight for human rights causes and protect personal freedom.

Source

Tagged : / / / / / /

Latest Umbrel Update Further Improves Bitcoin Privacy, Self-Sovereignty

This week, open-source Bitcoin and Lightning Network node developer Umbrel released a significant update to its operating system, bringing a list of notable improvements to its wallet and UX, plus several additions to its celebrated Umbrel App Store. 

The Umbrel App Store was released December 2020 and has brought single-click installation of some of the most popular Bitcoin apps since then. This latest update brings the addition of Samourai Server, a mempool.space explorer and LNBits.


The Umbrel v0.3.3 operating system update also allows users to easily connect to an external wallet to monitor and send transactions. This update also integrates the latest versions of Bitcoin Core (v0.21.0) and LND (v0.12.0).

About The Apps

Samourai Server is an exclusive, Umbrel-only app that runs both Samourai Dojo and Whirlpool out of the box, and provides easy, step-by-step instructions to the user so they can effortlessly connect their Samourai wallet. This represents the highest-level of privacy that you can achieve as a Samourai Wallet user, because you no longer have to trust its servers with any of your data. Also, with Whirlpool, your Umbrel can now mix your bitcoin at any time. 

Mempool is the self-hosted version of the mempool.space Bitcoin blockchain explorer. It brings all of the features of mempool.space to your Umbrel app, allowing you to use your Bitcoin node as a full-fledged explorer, visualize the mempool and get on-chain fee estimates. 

See Also

Bitcoin development nonprofit Brink has awarded its first fellowship to Gloria Zhao, who will work on package relay for Bitcoin mempools.


With LNbits, users can onboard their friends and family members to the Lightning Network relatively easily by hosting their wallets directly through Umbrel, without them having to worry about running a Lightning node or managing channel liquidity. 

Most Bitcoin and Lightning wallets have their own unique procedures for connecting to a personal Bitcoin node, and there isn’t a standard protocol. Some require additional steps, such as installing Tor, and some don’t, but the process isn’t obvious to most non-technically inclined people. The new wallet connector in Umbrel v0.3.3 provides easy to follow, step-by-step instructions for connecting most of the popular Bitcoin and Lightning wallets, like Electrum, Wasabi, Zap and BlueWallet. 

Combined with the seven apps that launched with the Umbrel App Store a few weeks ago (BTCPay Server, Specter Desktop, Sphinx Relay, RTL, Lightning Terminal, ThunderHub and BTC RPC Explorer), this latest update further solidifies that one-click install financial self-sovereignty is no longer a far-fetched dream with Umbrel.

Source

Tagged : / / / / / / / /
Bitcoin (BTC) $ 27,757.44 1.59%
Ethereum (ETH) $ 1,896.24 1.09%
Litecoin (LTC) $ 91.09 0.33%
Bitcoin Cash (BCH) $ 114.58 1.49%