Fairness is a crucial property for blockchain systems since it affects the participation: the ones that find the system fair tend to stay or enter, the ones that find the system unfair tend to leave. While current literature mainly focuses on …

This paper proposes strategies to improve the IOTA tangle in terms of resilience to splitting attacks. Our contribution is two fold. First, we define the notion of confidence fairness for tips selection algorithms to guarantee the first approval for …

Due to the open and dynamic nature of blockchain systems, the participants (users and miners) have to take into accounts uncertain constraints (e.g., the transaction confirmation times, the delays in the network, and the topology of the network) …

Bitcoin-like blockchains do not envisage any specific mechanism to avoid unfairness for the users. Hence, unfair situations, like impossibility of cancellation of transactions explicitly or having unconfirmed transactions, reduce the satisfaction of …

Bir önceki yazıda, Bitcoin sisteminin neden sürdürülebilir olmadığından söz etmiştim. Bu yazıda, bir başka önemli husus olan adalet konusuna değineceğim ve Bitcoin sisteminin neden adil olmadığını aktarmaya çalışacağım.

In the classical Bitcoin protocol, the current maximum block size (1 MB) limits number of transactions per block (around 3 transactions per second). This can force regular users to compete for transactions by increasing the fees, pricing some users out of the network, once the corresponding blockchain system is popular enough, which is the case for Bitcoin currently.

CEA Technical Report, DRT/LIST/DILS/17-0127/OG. Confidential.

While current Bitcoin literature mainly focuses on miner behaviors, little has been done to analyze user participation. Because Bitcoins users do not benefit from any incentive, their participation in the system is conditional upon system ability to …