Bitcoin-Safe, a Bitcoin Open Source saving portfolio, is now available, designed for families, individuals and companies looking for a long-term safe bitcoin depot. Focused on Multisig safety and on the need for hardware wallets for mainnet operations, it stands out from other desktop wallets such as Electrum and Sparrow. Supported by an OpENZATESTAS OPENSATTS of one year assigned in March 2025, Bitcoin-Safe combines solid security with a user interface redesigned in its latest version, 1.5.0, issued on September 1, 2025.
Development support and Opensatt
Developed for over two and a half years by Andreas Griffin, Bitcoin-Safe aims to simplify Multisig configurations and reduce dependence on electrum servers. “I started over two and a half years ago with this portfolio and I had two goals: to make Multisig easier and it is not necessary to rely on the electr server,” said Griffin to Bitcoin Magazine. The Opensatits subsidy, which goes from March 2025 to March 2026, supports these efforts. Built on Bitcoin Dev Kit (BDK), the open source code of the wallet is controlled on Github and installable clients are available for free on Bitcoin-safe.org/download, compatible with Windows, MacOS and Linux.
Multisig, Hardware portfolio safety and coins control
Bitcoin-Safe applies hardware wallets for mainnet, forbidding seeds software to mitigate the risks for safety. “For savings, there is no way to get around a hardware wallet,” said Griffin, underlining compatibility with the main hardware devices via QR, USB or SD card. This distinguishes Bitcoin-Safe from wallets that allow software seeds, give priority to safety for significant savings and at a minimum the “foot guns”, the characteristics with which users can easily hurt.
The Multisig wallet configuration procedure generates PDF with portfolio descriptors, including sending and reception tests for verification. “After finishing with this magician, you can be sure it is set correctly,” said Griffin. This guarantees a reliable configuration, making Multisig accessible without compromising safety.
Using the Nostr protocol, Bitcoin-Safe synchronize the transactions and labels of the addresses between the encrypted end-to-end devices. “I created a protocol above Nostr to connect these computers and synchronize the labels without continuity,” Griffin observed. Multisig participants can share partially signed Bitcoin transactions (PSBT) with a click, with relays that memorize encrypted messages for asynchronous access.
The categories of coins separate funds, such as KYC exchange withdrawals and private coins, to prevent unintentional transaction connections. “You have to select the source of the funds, so I do not accidentally connect them,” Griffin said, supporting the user’s privacy.
User and experience interface
The 1.5.0 version introduces a new interface, developed with @Design-R. “The designer who joined the project really contributes in a massive way,” said Griffin. The features include a sidebar for the management of multiple wallets, seen updated transactions for sending and signing PSBT and a mempool display showing the checkpoints and taxes.
The wallet adds keyboard shortcuts, securities and cancels the error messages. Bug corrections improve functionality, ensuring accessibility for beginner and advanced users.
Bitcoin-Safe supports real-time conversion for 123 FIAT currencies, integrated into the interface. It also converts the bitcoins into gold or silver values in ounces and grams. Real -time warnings in real time to advise users the propagation of transactions. “It is an opt-in functionality for existing users, opt-out for new installations,” said Griffin, with customizable network settings.
Users can unlock multiple wallets with a single encryption password. “When the more wallets share the same encryption password, users have to insert it only once,” explained Griffin. Nostr’s Chat & Sync functionality allows remote PSBT coordination for participants in Multisig.
Community and accessibility
Bitcoin-Safe supports languages such as English, Chinese and Spanish, with translations via weblates. Users can test with TBTC, report bugs or donate via lightning or onchain. The involvement occurs via chorus.comunity and x actors (@bitcoinsfefe, @bitcoinsfecn), with documentation on Bitcoin-Safe.org.
Future development: compact block filters
Bitcoin-Safe plans to integrate compact block filters in 2025 to replace electrum servers. “My plans are to replace [Electrum servers] With compact block filters to recover the blockchain data directly from the fundamental Bitcoin nodes, “said Griffin, aiming for greater privacy and independence of the server.