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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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UTXO Management

HomeUTXO Management
by Sergi Morales Duque
August 12, 2026
Address Reuse, Bitcoin Scripting, Data Privacy, On-Chain Analytics, Quantum Cryptography, Research, Risk Analysis, Uncategorized, UTXO Management

Counting Quantum Vulnerable Bitcoins

The quantum vulnerable Bitcoins are the ones that are at risk of being stolen by a quantum adversary due to being held by a quantum...
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by Gorka Pineda Burgueño
December 2, 2025
Bitcoin Core, Bitcoin Node, Data Science, Machine Learning, Performance Optimization, Uncategorized, UTXO Management

Predictive Caching for Bitcoin Core: Enhancing UTXO Set Management with Machine Learning

If you’ve ever wondered why running a Bitcoin node requires beefy hardware, you’re not alone. The challenge boils down to something called the UTXO...
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by Biel Castellarnau Ruiz
July 25, 2025
Replace By Fee, Transaction Security, Uncategorized, UTXO Management, Wallets, Zero-Confirmation

Replace By Fee

Transaction fees play a fundamental role in the proper functioning of the Bitcoin protocol. These fees act as an economic incentive for miners, who...
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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

  • 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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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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