How do you prove control of a UTXO without revealing the secret that protects it? By mordom It is one of the most fascinating questions of the entire Bitcoin protocol. Every time you send a transaction, thousands of nodes must verify that you truly have the right to spend those UTXOs. Yet, no one knows your…
Over the past two months, the BitVault team has spent more time on trains, planes, conference stages, and event halls than behind our desks. From Bitcare Forum in Brescia to Bitcoin Ireland in Dublin, from BTC Prague to Swiss Bitcoin Conference, and even through smaller but highly valuable gatherings such as BCC8333, this year’s Summer…
How your wallet builds your financial history every time you spend bitcoin By mordom Introduction You want to send 0.01 BTC.You open your wallet, enter the recipient’s address, check the fee, and press Send.At that point, you might think the wallet simply deducted 0.01 BTC from your balance.In reality, that’s not what happened. Before the transaction…
By mordom A Bitcoin address is not a public key. For most users, an address looks like a random string. Something you copy, paste, and use to receive funds. But behind those characters lies a very precise chain of cryptographic transformations. Nothing is arbitrary. Each step exists for a specific reason: security, compactness, resilience, and long-term…
BitVault has joined the X-Founders accelerator to continue building Bitcoin-native security systems designed for real-world risk, irreversible transactions, and stronger self-custody. For us, this is a meaningful step: a focused environment where we can keep refining our product, testing our assumptions, and working alongside founders and operators who understand the seriousness of building security for…
By mordom Imagine a normal situation. You have a hardware wallet. You want to monitor activity without plugging it in every time. Or you need to share addresses with your accountant. Or you’re using a watch-only app.So you export a zpub (an extended public key) and share it. The assumption is simple: “I’m only sharing public…
Where to meet BitVault next 🌍 Bitcoin lives in code, but it grows through people.In the coming weeks, we’ll be out there meeting the community, speaking on stage, and having real conversations about security, self-custody, and what actually happens when things go wrong. If you’re attending any of these events, come find us. We’d genuinely…
By mordom Your wallet does NOT generate infinite addresses You send a transaction. The wallet says “sent.”Then you wait.After an hour it’s still unconfirmed. After a few hours you start to worry.The exchange doesn’t credit, the payment doesn’t arrive, the recipient messages you.At that point, it feels like there’s nothing you can do. In reality, you…
How RBF and CPFP actually work By mordom You send a transaction. The wallet says “sent.”Then you wait.After an hour it’s still unconfirmed. After a few hours you start to worry.The exchange doesn’t credit, the payment doesn’t arrive, the recipient messages you.At that point, it feels like there’s nothing you can do. In reality, you…
By mordom Open your wallet and you see a number.0.42 BTC.1.8 BTC.0.003 BTC. It looks like a bank account. A single balance that belongs to you.But that number does not exist on the blockchain. Bitcoin does not track accounts or balances per address. There is no global registry that says “this address owns X”. What…