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Welcome to DISCRYPT, a dynamic research group from Universitat Autònoma de Barcelona dedicated to advancing knowledge in cybersecurity, cryptography, blockchain technologies, and data privacy.

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  • Edifici Q, Carrer de les Sitges, 08193 Barcelona
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by satoshi
May 9, 2025
Bitcoin Core, Bitcoin-Cli, Layer 1, Nodes

Com l’UTXO set ens pot ajudar a sincronitzar un node de Bitcoin

Accelerar la sincronització inicial de Bitcoin amb UTXO Set Tots ens hem trobat algun cop que el nostre node de Bitcoin deixa de funcionar,...
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by Domènec Madrid Hernández
April 25, 2025
Bitcoin Core, Docker & Deployment, Layer 1, Research, SegWit & Taproot from Genesis, Testbed/Mainnet Clone, Wallet Fingerprint

Building Your Own Mainnet

During my initial research period at UAB, I began developing a replica of the real Bitcoin mainnet. While this might sound unusual—especially given the...
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by Chandrakumar Rajakumar
April 25, 2025
Decentralization, Layer 1, Mining Centralization, On-Chain Analytics, Research

Bitcoin’s Decentralization Dashboard

📊 Bitcoin’s Decentralization: What the Data Really Says Bitcoin is intended to be a decentralized, trustless peer-to-peer currency. But how decentralized is the network, really, 15...
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by satoshi
April 8, 2025
Bitcoin Scripting, Layer 1, Research, Signature Schemes, Transaction Security, Zero-Confirmation

Revisiting Double-spending Prevention for Bitcoin zero-confirmation transactions

Some time ago, we proposed a mechanism to address a long-standing issue in Bitcoin: the vulnerability of zero-confirmation (0-conf) transactions to double-spending attacks. Zero-confirmation...
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by Gorka Pineda Burgueño
April 7, 2025
Bitcoin Core, Layer 1, Machine Learning, Performance Optimization, Research, UTXO Management

Using Machine Learning to Speed Up Bitcoin Core

We’ve recently submitted our latest paper to the 2025 7th International Conference on Blockchain Computing and Applications (BCCA), which will take place in Croatia. In...
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by Pol Espinasa i Vilarrasa
July 4, 2024
Coinjoin, Layer 1, PSBT, Research, Sighash, UTXO Management

Grouphug – Batching transactions without interaction between users

How GroupHug works, a server programmed in Rust that allows grouping or batching of transactions without interaction between users using SigHash Single | AnyoneCanPay...
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by Pol Espinasa i Vilarrasa
April 7, 2024
Bitcoin-Cli, Layer 1, PSBT, Research, Sparrow, UTXO Management, Wallets

How to make a transaction with UTXOs of different wallets with Sparrow

April 7, 2024 · 6 min · Pol Espinasa Let’s suppose that Bob and Alice share a flat and want to buy a television worth 2 bitcoins, paying...
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Recent Posts

  • Com l’UTXO set ens pot ajudar a sincronitzar un node de Bitcoin
  • Ring Signatures in Monero
  • Building Your Own Mainnet
  • Bitcoin’s Decentralization Dashboard
  • Fixing Transactions with the Same Incoming and Outgoing Channel

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Focused on the design, analysis, and implementation of cryptographic protocols and privacy-preserving technologies for decentralized systems.

  • Edifici Q, Carrer de les Sitges, 08193 Barcelona
  • 935813049

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May 9, 2025
Com l’UTXO set ens pot ajudar a sincronitzar un node
April 25, 2025
Building Your Own Mainnet
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