Bitcoin Safe - A bitcoin savings wallet for the entire family

Built for Learners

Built for Power Users

Step-by-Step Wallet Setup

• Single Sig Wizard: Follow the intuitive wizard that walks you through each step. https://youtu.be/m0g6ytYTy0w

• Multisig Wizard: The wizard ensures you do all necessary steps for a Multisig wallet in the right order. Afterwards your Multisig is ready to use and all signers are tested. Check out https://bitcoin-safe.org/en/features/setup-multisignature-wallet/

• PDF Backup: The wizard will also generates 3 PDF backup sheets for a 2-of-3 multisig wallet, so ensure you always have your wallet descriptor together with the seed.
  

• Hardware Signer Support: With full support for major hardware signers your keys remain securely offline.

Transaction Visualization

• Graphical Explorer: An interactive transaction diagram lets you click on inputs and outputs to follow the money flow intuitively.
  

• Coin Categories: Organize your addresses into distinct coin categories (e.g., “KYC”, “Work”, “Friends”) so Bitcoin Safe automatically selects the correct inputs when creating PSBTs.
  It prevents you accidentally linking coin categories when creating a transaction, and warns you if mistakes happened in the past.
  

Powerful Wallet Management Tools

• Flexible Fee Selection: Choose fees with one click using an intuitive mempool block preview.
• UTXO Management: Automatically (optional) merge UTXOs when fees are low.
• CSV Table Export: Right click, Drag&Drop, or CTRL+C for immediate CSV export for easy processing in Excel.
• PDF Balance Statement: Export the address balances for easy record keeping on paper.

Advanced Features for the Power-User

Label Synchronization and Backup

• Seamless Sync: Using encrypted nostr messages, Bitcoin Safe synchronizes your coin categories and labels across multiple devices.
• Easy Backup: A short backup key is all you need to safeguard your coin categories and labels, ensuring your organization remains intact.

Collaborative Multi-party Multisig

• Group Chat Integration: After creating your multisig wallet, Bitcoin Safe offers an encrypted nostr group chat for secure collaboration and one-click PSBT sharing.
  • User Authentication: Each participant must authenticate every other user with a simple click, ensuring secure communication.

Watch and Learn: Get Started with Bitcoin Safe

Whats next?

• Compact Block Filters!!! They make electrum servers obsolete.
  • Why? Compact Block Filters increase the network privacy dramatically, since you're not asking an electrum server to give you your transactions
  • Trade-off: They are a little slower than electrum servers. For a savings wallet like Bitcoin Safe this should be OK.
  • How do they work? Simply speaking: They ask normal bitcoin core nodes for a short summary of each block. And if the summary shows a transaction belonging to the wallet, the entire block is then downloaded from the bitcoin core node. The bitcoin core node does not learn however which of the many transactions in the block you were interested in. Read more here and of course in the bip.
  • When: 2 weeks 😅. Lots of things need to be done until Bitcoin Safe can use the bdk CBF/kyoto client from rustaceanrob, so keep an eye out for updates and please give feedback when you use Bitcoin Safe.

Thank you

• bdk nostr:nprofile1qqsgkmgkmv63djkxmwvdlyaxx0xtsytvkyyg5fwzmp48pwd30f3jtxspzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg5waehxw309aex2mrp0yhxgctdw4eju6t0qyt8wumn8ghj7un9d3shjtnwdaehgu3wvfskueqr8vuet
  • and especially nostr:npub1thunderat5g552cuy7umk624ct5xe4tpgwr2jcjjq2gc0567wgrqnya79l , nostr:npub1reezn2ctrrg736uqj7mva9lsuwv0kr5asj4vvkwxnrwlhvxf98tsq99ty4 , and nostr:npub1ke470rdgnxg4gjs9cw3tv0dp690wl68f5xak5smflpsksedadd7qtf8jfm for dealing with my many feature requests and questions.
  • rustaceanrob building kyoto which implements CBF for BDK; a crucial library and will be able to replace electrum servers for many use cases
• ndk by nostr:nprofile1qqsx3kq3vkgczq9hmfplc28h687py42yvms3zkyxh8nmkvn0vhkyyuspz4mhxue69uhkummnw3ezummcw3ezuer9wchsz9thwden5te0wfjkccte9ejxzmt4wvhxjme0qy88wumn8ghj7mn0wvhxcmmv9u0uehfp

• nostr:npub1p5cmlt32vc3jefkl3ymdvm9zk892fsmkq79eq77uvkaqrnyktasqkpkgaw nostr:npub1s07s0h5mwcenfnyagme8shp9trnv964lulgvdmppgenuhtk9p4rsueuk63 nostr:npub18f3g76xc7xs430euwwl9gpn7ue7ux8vmtm9q8htn9s26d8c4neeqdraz3s nostr:npub1mtd7s63xd85ykv09p7y8wvg754jpsfpplxknh5xr0pu938zf86fqygqxas nostr:npub1kysd8m44dhv7ywa75u5z7w2w0gs4t6qzhgvjp555gfknasy3krlqfxde60 nostr:npub185pu2dsgg9d36uvvw7rwuy9aknn8hnknygr7x2yqa60ygvq6r8kqc836k8 nostr:npub1hkcgyqnsuaradq3g5hyvfdekwypc25494nmwggwpygxas7fcs4fst860fu nostr:npub1xsl0msy347vmj8gcpsjum6wwppc4ercvq4xfrhqmek2dqmqm0mtsyf35vx nostr:npub1hxjnw53mhghumt590kgd3fmqme8jzwwflyxesmm50nnapmqdzu7swqagw3 nostr:npub1ke470rdgnxg4gjs9cw3tv0dp690wl68f5xak5smflpsksedadd7qtf8jfm nostr:npub1sk26fxl4fy3vt8m5n0a6aturaql0w20nvh22q0cyaqm28tj7z8ss3lutc9 nostr:npub1r4llq2jcvq4g2tgha5amjz07zk7mrrcj89wllny9xwhhp5zzkklqk4jwja nostr:npub1p9v2zpwl28c0gu0vr2enp3lwdtv29scwpeqsnt0ngqf03vtlyxfqhkae5w nostr:npub1xkym0yaewlz0qfghtt7hjtnu28fxaa5rk3wtcek9d3x3ft2ns3lq775few nostr:npub1r8343wqpra05l3jnc4jud4xz7vlnyeslf7gfsty7ahpf92rhfmpsmqwym8 nostr:npub12zpfs3yq7we83yvypgsrw5f88y2fv780c2kfs89ge5qk6q3sfm7spks880 nostr:npub1yrnuj56rnen08zp2h9h7p74ghgjx6ma39spmpj6w9hzxywutevsst7k5cx https://x.com/91xTx93x2 https://x.com/afilini rustaceanrob