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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.

  • 935813049
  • Edifici Q, Carrer de les Sitges, 08193 Barcelona
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by Pol Espinasa i Vilarrasa
September 16, 2025
Bitcoin Core, Bitcoin-Cli, Layer 1, Nodes

How UTXO set can help us synchronize a Bitcoin node

Accelerating Bitcoin Initial Sync with the UTXO Set We’ve all experienced situations where our Bitcoin node stops working—maybe the Raspberry Pi crashes, the disk...
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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

  • Is Hardware Wallet Fingerprinting Even Possible?
  • Implementing a Bitcoin Honeypot Address Protocol
  • Counting Quantum Vulnerable Bitcoins
  • Predictive Caching for Bitcoin Core: Enhancing UTXO Set Management with Machine Learning
  • A Risk Analysis of Non-custodial Staking in Ethereum

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  4. amoxicillin interaction details on Covert-Nonce Channel Attacks in Bitcoin Hardware Wallets
  5. bronchitis respiratory symptoms on Quantum threat on Bitcoin
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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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August 14, 2026
Is Hardware Wallet Fingerprinting Even Possible?
August 12, 2026
Counting Quantum Vulnerable Bitcoins
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