Results 41 to 50 of about 70,587 (266)

Disorder unleashes panic in bitcoin dynamics

open access: yesJournal of Physics: Complexity, 2023
The behaviour of Bitcoin owners is reflected in the structure and the number of bitcoin transactions encoded in the Blockchain. Likewise, the behaviour of Bitcoin traders is reflected in the formation of bullish and bearish trends in the crypto market ...
Marco Alberto Javarone   +5 more
doaj   +1 more source

Bitcoin

open access: yesDigitale Welt, 2018
Bitxoxo Bitcoin ...
openaire   +4 more sources

Bitcoin Covenants Unchained [PDF]

open access: yes, 2020
Covenants are linguistic primitives that extend the Bitcoin script language, allowing transactions to constrain the scripts of the redeeming ones. Advocated as a way of improving the expressiveness of Bitcoin contracts while preserving the simplicity of the UTXO design, various forms of covenants have been proposed over the years.
Bartoletti M., Lande S., Zunino R.
openaire   +4 more sources

Boom, Bust, and Bitcoin: Bitcoin-Bubbles as Innovation Accelerators [PDF]

open access: yesJournal of Economic Issues, 2020
Bitcoin represents one of the most interesting technological breakthroughs and socio-economic experiments of the last decades. In this paper, we examine the role of speculative bubbles in the process of Bitcoin's technological adoption by analyzing its social dynamics. We trace Bitcoin's genesis and dissect the nature of its techno-economic innovation.
Didier Sornette, Tobias Huber
openaire   +3 more sources

A Petri Nets Model for Blockchain Analysis

open access: yes, 2017
A Blockchain is a global shared infrastructure where cryptocurrency transactions among addresses are recorded, validated and made publicly available in a peer- to-peer network. To date the best known and important cryptocurrency is the bitcoin.
Marchesi, Michele   +3 more
core   +1 more source

On the inefficiency of Bitcoin [PDF]

open access: yesEconomics Letters, 2017
Abstract Urquhart (2016) investigated the market efficiency of Bitcoin by means of five different tests on Bitcoin returns. It was concluded that the Bitcoin returns do not satisfy the efficient market hypothesis. We show here that a simple power transformation of the Bitcoin returns do satisfy the hypothesis through the use of eight different tests.
Saralees Nadarajah, Jeffrey Chu
openaire   +3 more sources

Sustainability of bitcoin and blockchains [PDF]

open access: yesCurrent Opinion in Environmental Sustainability, 2017
Bitcoin is an electronic currency that has become increasingly popular since its introduction in 2008. Transactions in the bitcoin system are stored in a public transaction ledger (‘the blockchain’), which is stored in a decentralized, peer-to-peer network. Bitcoin provides decentralized currency issuance and transaction clearance.
Harald Vranken, Harald Vranken
openaire   +3 more sources

Detecting Roles of Money Laundering in Bitcoin Mixing Transactions: A Goal Modeling and Mining Framework

open access: yesFrontiers in Physics, 2021
Cryptocurrency has become a new venue for money laundering. Bitcoin mixing services deliberately obfuscate the relationship between senders and recipients, making it difficult to trace suspicious money flow.
Mingdong Liu, Hu Chen, Jiaqi Yan
doaj   +1 more source

Examining Heterogeneity Structured on a Large Data Volume with Minimal Incompleteness

open access: yesARO-The Scientific Journal of Koya University, 2021
While Big Data analytics can provide a variety of benefits, processing heterogeneous data comes with its own set of limitations. A transaction pattern must be studied independently while working with Bitcoin data, this study examines twitter data related
Nahla Aljojo
doaj   +1 more source

Multi‐Distance Spatial‐Temporal Graph Neural Network for Anomaly Detection in Blockchain Transactions

open access: yesAdvanced Intelligent Systems, EarlyView.
This paper presents a novel Multi‐Distance Spatial‐Temporal Graph Neural Network for detecting anomalies in blockchain transactions. The model combines multi‐distance graph convolutions with adaptive temporal modeling to capture complex patterns in anonymized cryptocurrency networks.
Shiyang Chen   +4 more
wiley   +1 more source

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