BitVault

New open-source & self-custody wallet utilizing time-delays and multisignature to offset physical attacks and hacks. Beyond keys, we protect humans. Get early access 👉 https://bitvault.sv

Public Key

npub1605ak4f6smrgflrtp7f5amsmdt2rfea26zdkxe24h8nd95gz7wzqud69l7

Profile Code

nprofile1qqsd86wm25agd35yl34sly6wacdk44p5u74dpxmrv42mnekj6yp08pqpr4mhxue69uhkummnw3ezumtfv3jxc6twvuhx67tydeeju6nsqyv8wumn8ghj7mn0wd68ytnnv43xzum5d9uzuer9wctmh4p4

Publishing to

nostr.middling.mydns.jp

nostr.sebastix.dev

pyramid.fiatjaf.com

relay.primal.net

nostr.tools.global.id

Author Public Key

npub1605ak4f6smrgflrtp7f5amsmdt2rfea26zdkxe24h8nd95gz7wzqud69l7

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Last Notes

2026-07-16 05:46:29 UTC

A useful way to think about secp256k1:
It is not the signature algorithm.
The algorithm is ECDSA. secp256k1 is the elliptic curve ECDSA operates on in Bitcoin.
This distinction matters because it makes the architecture clearer.
The wallet creates a signature from the private key and the transaction hash. Nodes use the public key to check whether that signature is valid. The verification is cheap. Reconstructing the private key from the public key is considered computationally infeasible.
That asymmetry is the point.
Bitcoin ownership works because the network can verify authorization without ever learning the secret.
Read the article:
https://blog.bitvault.sv/secp256k1-the-mechanism-that-secures-bitcoin-signatures/
https://blossom.primal.net/7cf940645bf64ec4db20fb775df59086284f88926590581ea948c2733edca6aa.png

2026-06-18 14:07:42 UTC

One thing stood out during Summer of Vaults 2026:
Bitcoiners care deeply about security.
From Brescia to Prague, Dublin, Barcelona and Switzerland, we had countless conversations about self-custody, coercion resistance, operational security, inheritance, multisig and real-world threats.
Some people loved our ideas.
Others challenged them.
Both were equally valuable.
Open-source Bitcoin is built through discussion, criticism and iteration.
Thanks to everyone who stopped by to share their thoughts.
We're taking those lessons back into the product.
Public Release coming soon. ⚡
Read more:
Summer of Vaults 2026 Recap: 👇️
https://blog.bitvault.sv/building-bitvault-in-the-open-reflections-from-summer-of-vaults-2026/
https://blossom.primal.net/808b1f7a9ecaad72a04b8ac00cf37d9396109e0c4ed509bfa2f7f333183899c5.jpg

2026-06-16 10:44:42 UTC

@nprofile…py4c was high signal.
The BitVault team came back with strong conversations, real feedback, focused meetings, and a clear feeling that Bitcoiners are ready to talk about security beyond keys.
Self-custody is not only about holding keys.
It is also about time, human risk, physical pressure, operational mistakes, and building systems that protect people in the real world.
https://blossom.primal.net/7a65c4e663e5f2b8359fb62a5b9c2709f874917b4d974b321d1f1765f2e6e8b3.jpg
https://blossom.primal.net/d707aed74caf15248424e3152c5ac6a07ac839be78bd25fa9569ef24a3357836.jpg

2026-05-26 09:12:35 UTC

Just wrapped up a few intense days at Bitcoin Ireland in Dublin.
Really good event. Good people. Good conversations.
Loïc Ruchat-Leuthard represented BitVault on stage talking about self custody, coercion resistance, and why Bitcoin security has to evolve beyond simple key protection.
Meanwhile the rest of us spent most of the conference doing what these events are really about:
meeting people, exchanging ideas, discussing failure models, operational risk, and how real-world Bitcoin usage changes the threat landscape entirely.
One thing became very clear during many conversations:
more and more people understand that Bitcoin security is not only a cryptography problem anymore.
It’s increasingly an architectural and human one.
Huge thanks to the organizers, to John Waldron, and to everyone who spent time with us during the event.
Dublin was special.
https://blossom.primal.net/d502878c6e2012b18cb58976222a13783626305fcf374bfb6f15fa0ce049ff97.mp4

2026-05-25 11:51:29 UTC

Spent the last days at @nprofile…gdtw talking with Bitcoiners, builders, and security-minded people.
One thing is becoming increasingly clear:
Bitcoin self custody cannot rely only on protecting keys.
Real-world coercion, operational mistakes, and irreversible actions fundamentally change the security model.
Good to see more people starting to think beyond traditional wallet assumptions.
Thanks to our team on the field @nprofile…qeyw , @nprofile…dxa3 and Mariluz and to the organizers of the event!
https://blossom.primal.net/798463ffdd7da5104b5c71739a599b76e8e84b150804dcae7c2409ddba422001.mp4

2026-05-22 13:58:07 UTC

Excited to announce that BitVault will be speaking at BitcoinConferenceIreland. Our Co-Founder⁠ 🇮🇪 @ruchat_loic will talk about Bitcoin self-custody, coercion resistance, and why real-world security needs more than just protecting private keys. See you in Dublin 👀 #Bitcoin #SelfCustody
https://blossom.primal.net/c864dc1537dd388bffe8b85d2984ed1823184152cf311834bb673df0faa30374.jpg

2026-05-22 13:56:39 UTC

Today we build the booth.
Tomorrow we take the stage.
The BitVault team is at @nprofile…gdtw preparing demos, visuals, the talk, and final details. We’ll discuss self-custody, Bitcoin security, and protection against coercion and real-world attacks. Come meet us 👀and learn more!
https://blossom.primal.net/9078b455eae835cb7aee9278b96fd081f39a2ff47c12abf0c35224772773bccd.mp4
https://blossom.primal.net/d2ff0e17fcda7d1940f153a364d1fd72757f924aab94163387b748cb92724acd.mp4

2026-05-17 20:15:54 UTC

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Hey @nprofile…53nw, even though the content is not AI-generated, thank you for your feedback, we'll share it with the author.

2026-05-15 05:31:06 UTC

One way to think about it:
Bitcoin removes trusted third parties.
But it also removes "privacy by default".
Everything is transparent unless you actively design against it.
Tools like zpubs are useful.
But they are also dangerous if misunderstood.
This is why security is not just cryptography. It's architecture + behavior + information exposure.
More here → https://blog.bitvault.sv/from-a-zpub-to-your-private-key-the-hidden-risk-most-people-miss/
https://blossom.primal.net/4c3abbabd4003117ab06af1aede6c1a4c200ec96c42d8c0ff6605adec35f2677.webp

2026-05-13 21:48:23 UTC

Our @nprofile…2jis taking the stage in Viareggio during the Tuscany Lighting Summit to talk to an audience of super expert developers and bitcoiner about b-ssl.com, our next goal to make keys' recovery trustless and affordable in self-custody.
Our summer of vaults keeps going! 🚀
https://blossom.primal.net/1ee8ae8fdb4c74e12df830742fbd5d417f0217586d66802dbffaec0bf9ef1c56.jpg

2026-05-11 12:28:47 UTC

BitVault joined X-Founders.
Bitcoin transactions are final. No reversals. No second chances. That finality is the point — and it demands security built specifically for it.
We're building Bitcoin-native security architecture: real-world risk models, stronger self-custody, and infrastructure that takes irreversibility seriously.
X-Founders is a step forward in that work.
Full post:
https://blog.bitvault.sv/bitvault-joins-xfounders-accelerator-to-advance-bitcoin-native-security-architecture/
https://blossom.primal.net/a3481a2d174623ab5de57cd4d12d08620d307365bbb08f46b4d7c962c71d595a.png

2026-05-05 11:27:12 UTC

There is a subtle but critical misconception in Bitcoin.
People focus heavily on private keys — and that makes sense.
But they often ignore what they are exposing through extended public keys.
A zpub does not give control over funds.
But it gives something else: visibility.
And visibility changes the threat model.
Because once someone can observe:
• your transaction patterns
• your balances
• your flows
They don't need to break Bitcoin.
They just need to understand you.
This is where many attacks actually start.
Full article → https://blog.bitvault.sv/from-a-zpub-to-your-private-key-the-hidden-risk-most-people-miss/
https://blossom.primal.net/4c3abbabd4003117ab06af1aede6c1a4c200ec96c42d8c0ff6605adec35f2677.webp

2026-05-05 06:04:44 UTC

Most people still think security = keys. It's not.
Meet us this summer and fine out why: 👇
https://blog.bitvault.sv/bitvault-summer-of-vaults-2026/
https://blossom.primal.net/db715895f88356d67d3f9924813f5c4285633fb1c39cf4712869d8b007889e13.png

2026-04-29 12:04:07 UTC

Security in Bitcoin is architectural. Not procedural.
Hardened derivation is one example of that philosophy: constrain what can be derived, constrain what can leak.
Learn more about this topic in this blog post: 👉️ https://blog.bitvault.sv/hardened-vs-non-hardened-addresses/
https://blossom.primal.net/246e5f11b724be25b3c23b6f6faaab7b719b5646859d28dbf5f26a46dae608f1.jpg

2026-04-27 08:54:54 UTC

BitVault was at Swiss Bitcoin Conference last week. 6th place in the Whale Tank contest.
Big thanks to our speaker and founder Loic for taking the stage.
Great conference, great organizers, real Bitcoin signal.
https://blossom.primal.net/1bf1a4eba40604e686aaa7a16cbff6687ea0c6dcdc0ad13de43fc1e733f4c1a2.jpg

2026-04-26 07:02:11 UTC

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Thank you for the proposal! ⚡

2026-04-25 12:37:43 UTC

🔥 Feuer und Flamme für Bitcoin — Marc Friedrich’s words from the main stage today, and they capture exactly why we’re here.
The BitVault team is at the https://swiss-bitcoin-conference.com/ , and we’re stepping into the Whale Tank to present our self-custody solution — engineered around the three threats every Bitcoiner has to plan for:
→ Attacks
→ Key loss
→ Inheritance
Multisignature and timelocks, built in Switzerland. Sovereignty that holds up on the worst day, not just the easy ones.
Come say hi.
@nprofile…qeyw Loïc Ruchat-Leuthardt
https://blossom.primal.net/2b7a38be951868572df16ff2c9ef414012032d9ec20b46108af86f9dc7f94761.jpg
https://blossom.primal.net/4337fa86b5013c6889c5f6e6fe03357f0dd0e829ead28cfdca68fb16813d7bb1.jpg

2026-04-24 09:03:13 UTC

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Dokładnie. W naszym konkretnym przypadku opieramy się na najlepszym zabezpieczeniu za pomocą odizolowanych portfeli sprzętowych.

2026-04-23 16:33:09 UTC

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100% agree about the potential of locking yourself out with time lock. But what happen if you are "forced" to sign in a multisig setup and the transaction is istantly settled?

2026-04-23 16:17:30 UTC

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Duress PINs are a smart layer. Another angle worth pairing: multisig + time-delay so a thief can't sweep funds instantly even with your real PIN. More at https://primal.net/bitvault

2026-04-23 16:16:05 UTC

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Agreed. The missing piece is making multisig and inheritance protocols usable without sacrificing sovereignty. That is what we built around. Worth a look: https://primal.net/bitvault

2026-04-23 16:12:07 UTC

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Eclipse attacks on timelocks are a real threat — if block delivery is controlled, your time-delay becomes a liability rather than a feature. We think about that tradeoff in how we structure multisig. https://primal.net/bitvault

2026-04-23 16:11:29 UTC

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Your point about not everyone carrying it the same way resonates. Custody structure is part of that calculus. Time-delays and multisig let you tune the risk to your own situation. https://primal.net/bitvault

2026-04-23 16:10:32 UTC

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Wer den Ausgang sucht, landet bei selbst verwahrten Schlüsseln. Mathematik ohne Kontrolle ist nur halbe Freiheit. Multisig und Zeitverzögerung schließen die Lücke. https://primal.net/bitvault

2026-04-23 16:10:02 UTC

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Control of supply starts with control of your keys. Multisig and time-delay vaults take that a step further by removing single points of failure. Worth a look: https://primal.net/bitvault

2026-04-23 16:09:27 UTC

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Sovereign money only works if the keys stay safe. Single-key setups are one mistake away from loss. Multisig with time-delay protection closes that gap. https://primal.net/bitvault

2026-04-23 16:08:20 UTC

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Immutable ledger, sure, but the keys holding that truth still need a trust-minimized security model. Multisig and time-delay are the natural extension of that idea. https://primal.net/bitvault

2026-04-23 16:05:59 UTC

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Sovereign custody is a form of responsibility taken seriously. Multisig and time-delay vaults are how that responsibility gets enforced technically. If that resonates: https://primal.net/bitvault

2026-04-23 16:02:32 UTC

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Stacking sats since 2020 means security matters more each year. Multisig with time-delay is worth considering as holdings grow. More at https://primal.net/bitvault

2026-04-23 16:01:26 UTC

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If people genuinely need Bitcoin to survive economically, losing it to a hack or bad actor is devastating. Securing it with multisig and time-delay is worth thinking about: https://primal.net/bitvault

2026-04-23 16:00:45 UTC

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Good to see Bitcoin inheritance getting real products. If you follow that space, BitVault combines multisig with time-delay vaults - follow along at https://primal.net/bitvault

2026-04-23 15:58:42 UTC

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Goed dat je timelock begrijpbaar wil maken. BitVault combineert multisig met time-delay voor echte zelfbewaring. Misschien interessant: https://primal.net/bitvault

2026-04-23 15:58:15 UTC

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Seed phrase challenges are a smart teaching tool. When your audience is ready for the next level, multisig plus time-delay security removes single points of failure. Worth a look: https://primal.net/bitvault

2026-04-23 15:56:48 UTC

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Self-custody with real inheritance planning is exactly what most setups miss. BitVault pairs multisig with time-delay for that same sovereignty goal you're describing. Follow along at https://primal.net/bitvault

2026-04-23 15:56:00 UTC

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Le problème du duress wallet c'est qu'il cède trop vite. Un time-delay multisig rend l'agression inutile : aucun accès immédiat possible même sous menace. Plus d'infos: https://primal.net/bitvault

2026-04-23 15:53:56 UTC

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That separation you describe — identity vs signing authority — is the core design problem BitVault solves with multisig and time-delay. Different keys, different roles. Worth a look: https://primal.net/bitvault

2026-04-23 15:52:43 UTC

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You nailed it @nprofile…ylye - inheritance is where sovereign self-custody breaks down in practice. BitVault tackles it with multisig and time-delay, open-source and offline. Follow along at https://primal.net/bitvault

2026-04-23 15:49:06 UTC

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That game changer framing is right on. Multisig plus a time-delay means coins can pass to heirs without single points of failure. Prague launch is close - follow along at https://primal.net/bitvault

2026-04-23 15:48:06 UTC

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Clear instructions are half the battle. The other half is a setup that survives even if those instructions fail. Multisig with time-delay builds that in structurally. Worth a look: https://primal.net/bitvault

2026-04-23 15:45:22 UTC

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UTXO mechanics are step one. Deciding who can actually spend those outputs is step two. We built around that idea: https://primal.net/bitvault

2026-04-23 15:43:11 UTC

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Solid coverage of the inheritance problem. Multisig plus a time-delay unlock is one concrete solution worth including. Follow along at https://primal.net/bitvault

2026-04-23 15:42:03 UTC

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Signet research on Raspiblitz is a great way to stress-test assumptions. We are building multisig + timelock self-custody for that same mindset, follow along at https://primal.net/bitvault

2026-04-23 15:35:42 UTC

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Timelocks and multisig can add a strong technical layer to inheritance plans like yours. If that angle interests you, follow along at https://primal.net/bitvault

2026-04-23 15:34:25 UTC

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Structured Bitcoin inheritance with timelocks is a hard problem to get right. We have been building multisig plus time-delay self-custody around this exact use case. Follow along at https://primal.net/bitvault

2026-04-23 13:51:40 UTC

Bitcoin doesn't forgive mistakes. That's the premise.
Which means design decisions upstream matter more than in traditional systems.
Non-hardened derivation introduces relationships that can be useful — but also exploitable depending on context.
Understanding this is part of growing from user to operator.
Learn more at https://blog.bitvault.sv/hardened-vs-non-hardened-addresses/
https://blossom.primal.net/ea1683d45f853d6775ba439ec7b01b89f77284a34b5da9adc64d6f6e6d1e6c10.webp

2026-04-22 16:27:54 UTC

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Great to see you are also building in the bitcoin security space!
Maybe there's room for collaboration?

2026-04-22 15:47:07 UTC

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That Ledger story is brutal. Walled gardens fail because one approval slip costs everything. We built multisig with time-delay so no single point can do that: https://primal.net/bitvault

2026-04-22 14:55:19 UTC

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Dobry opis 2-z-3. Dodajemy do multisig opóźnienie czasowe jako kolejną warstwę ochrony — warto sprawdzić: https://primal.net/bitvault

2026-04-22 14:51:25 UTC

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Captured bitcoin' is a sharp way to put it. The next step past exchange custody is self-custody with real redundancy — multisig plus time-delay. More at https://primal.net/bitvault

2026-04-18 14:41:48 UTC

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Duress PIN as a decoy is clever, but wiping the device is a one-shot defense. Time-delay withdrawal adds another layer — the attacker has to wait, giving you recovery options. Worth a look: https://primal.net/bitvault

2026-04-18 14:39:52 UTC

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Q-Day timelines like 2029 are sobering. Most wallet designs won't adapt fast enough. Multisig + time-delay at least buys you optionality to migrate keys before exposure. Worth a look: https://primal.net/bitvault

2026-04-18 14:38:25 UTC

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Compressing the attack surface is exactly the right framing. Multisig + time-delay does that at the key layer — fewer single points of failure by design. Building something around that idea: https://primal.net/bitvault

2026-04-18 14:37:39 UTC

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Passphrase advice is underrated — most people skip it entirely. Multisig adds another layer beyond passphrase though, especially with time-delay recovery. Building exactly that at https://primal.net/bitvault — curious to hear your thoughts.

2026-04-18 14:36:55 UTC

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(non solo nella generazione)

2026-04-18 14:36:26 UTC

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Seed phrase come documento di proprietà: esatto. Il rischio vero è nella custodia, non nella generazione. BitVault usa multisig e time-delay per aggiungere livelli senza togliere sovranità. Dai un'occhiata: https://primal.net/bitvault

2026-04-18 14:35:20 UTC

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Zero-knowledge coordination with no backend is a real unlock for multisig UX. We've been working on the time-delay and key-management side of the same problem with BitVault — curious to hear your thoughts: https://primal.net/bitvault

2026-04-18 14:27:45 UTC

https://primal.net/bitvault

2026-04-18 14:13:01 UTC

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Multisig with a time-delay is the answer I keep coming back to — passphrase alone feels fragile over decades. That exact setup is what we built at @nprofile…glxs if you want to see how it plays out in practice.

2026-04-18 14:11:22 UTC

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Paulson saying this publicly is remarkable — when a former Treasury Secretary warns of a break-the-glass moment, sovereign risk is no longer theoretical. Self-custody matters more than ever. Worth a follow: @nprofile…glxs

2026-04-18 14:06:57 UTC

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Wrapping Bitcoin in ETFs and managed accounts preserves the price exposure but strips the ownership. That gap — between holding and truly controlling — is exactly what @nprofile…glxs is built around. Worth a follow if this resonates.

2026-04-18 14:04:26 UTC

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Seed phrase sharing as an act of trust is a profound framing. The risk is what happens when that trust is tested by time or circumstance. That's exactly why we built @nprofile…glxs — multisig and time-delay so sovereignty.

2026-04-18 13:59:28 UTC

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Custom nLocktime is underrated — it's one of the most powerful tools for self-custody when paired with multisig. We built @nprofile…glxs BitVault around exactly that combo. If you're exploring time-delay custody models, worth a look at bitvault.sv.

2026-04-18 13:57:38 UTC

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Building a signet POC shows real commitment — curious what your approach is to key management and coercion risk in the payment flow. We've been thinking hard about similar tradeoffs at @nprofile…glxs Would love to hear your feedback on our multisig+time-delay model.

2026-04-18 13:56:15 UTC

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Esatto — il multisig elimina il singolo punto di fallimento. Noi di @nprofile…glxs ci siamo concentrati su questo, aggiungendo time-delay per ridurre anche il rischio di coercizione. Vale la pena darci un'occhiata se ti interessa approfondire.

2026-04-18 13:52:30 UTC

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That friction you're describing is real — and it's actually the security working as intended. You might like what @nprofile…glxs is doing with multisig plus time-delay to add another layer against coercion and mistakes. Worth a look.

2026-04-18 12:08:38 UTC

One of the most underappreciated aspects of Bitcoin wallet design is derivation structure.
Hardened vs non-hardened is not just about compatibility. It defines how information flows between keys. In systems where transactions are final, limiting information propagation is a core security principle.
This article is a good refresher:
👉https://blog.bitvault.sv/hardened-vs-non-hardened-addresses/
https://blossom.primal.net/246e5f11b724be25b3c23b6f6faaab7b719b5646859d28dbf5f26a46dae608f1.jpg

2026-04-02 09:23:06 UTC

A stuck tx is just a low-priority tx. Nothing more.
Check it out at https://blog.bitvault.sv/stuck-transaction-how-to-fix-it/

2026-03-28 12:44:50 UTC

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Tools like RBF exist for a reason
Full breakdown → https://blog.bitvault.sv/stuck-transaction-how-to-fix-it/

2026-03-28 12:44:14 UTC

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If you underbid, you wait

2026-03-28 12:43:06 UTC

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Bitcoin is a fee auction, not a queue

2026-03-28 12:42:41 UTC

Most people misunderstand “stuck transactions”.

2026-03-23 12:31:44 UTC

https://npub1605ak4f6smrgflrtp7f5amsmdt2rfea26zdkxe24h8nd95gz7wzqud69l7.blossom.band/743a974eb3783572c776e16522b522c2cf81c6c13fc3584082357b8322b84a2e.png
Once you internalize the UTXO model, Bitcoin stops looking like a bank account system and starts looking like a distributed ledger of spendable outputs.
👉️ https://blog.bitvault.sv/bitcoin-doesnt-have-balances-it-has-utxos/

2026-03-20 08:10:06 UTC

Thinking in UTXOs instead of balances changes how you understand Bitcoin. Instead of accounts, you have discrete outputs locked by scripts.
Ownership is simply the ability to unlock those outputs.
Learn more 👉 https://blog.bitvault.sv/bitcoin-doesnt-have-balances-it-has-utxos/

2026-03-16 11:14:25 UTC

One subtle thing that confuses many Bitcoin users: balances don’t exist on-chain.
Bitcoin tracks UTXOs.
Wallets simply collect outputs controlled by your keys and display their sum as a “balance”.
Learn more 👉️ https://blog.bitvault.sv/bitcoin-doesnt-have-balances-it-has-utxos/

2026-02-28 11:02:26 UTC

Bitcoin security conversations often ignore derivation mechanics. That’s where authority is born. Mnemonics are just the interface to entropy. Under the hood is where the real story is.
Learn more: 👇 https://blog.bitvault.sv/from-mnemonic-to-address-what-really-happens-under-the-hood/
https://blossom.primal.net/8efeaabbe707252d445c8fd97cae0d823f282336d823e627da08f5c3db697315.png

2026-02-23 04:36:21 UTC

https://npub1605ak4f6smrgflrtp7f5amsmdt2rfea26zdkxe24h8nd95gz7wzqud69l7.blossom.band/b2a2c3e86045ea420621a4309f45489fd1356274d47339f9353f4eafcff39a06.png
Your mnemonic isn’t “a backup.” It’s a deterministic key generator encoded as words.
Entropy → seed → derivation path → address.
If you don’t understand that chain, you don’t understand custody.
Full breakdown: https://blog.bitvault.sv/from-mnemonic-to-address-what-really-happens-under-the-hood/?utm_source=nostr&utm_medium=organic_social&utm_campaign=mnemonic_under_the_hood_feb2026&utm_content=minimal_insight

2025-09-05 09:23:35 UTC

https://x.com/lukemikic21/status/1962634730056405041
https://blossom.primal.net/62ae29b836af46bf98585528ab99946853fbf086d8c1a127632936f27b1d7940.jpg

2025-08-19 05:35:37 UTC

BITVAULT is AVAILABLE in PreSale
42 Lifetime Spots. $199. Forever.
Time-Delays over Multisig → the next level of Bitcoin security.
Not just a wallet for your keys — a fortress that protects YOU.
—> https://presale.bitvault.sv

2025-08-17 09:12:13 UTC

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👀

2025-08-16 21:26:30 UTC

🚨 BITVAULT is AVAILABLE in PreSale
21 Lifetime Spots. $99. Forever.
Time-Delays over Multisig → the next level of Bitcoin security.
Not just a wallet for your keys — a fortress that protects YOU.
🔗 https://presale.bitvault.sv
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2025-08-16 06:48:03 UTC

Hello Bitcoiners !