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cs.CR2025
StarveSpam: Mitigating Spam with Local Reputation in Permissionless Blockchains
Rowdy Chotkan, Bulat Nasrulin, Jérémie Decouchant +1
Spam poses a growing threat to blockchain networks. Adversaries can easily create multiple accounts to flood transaction pools, inflating fees and degrading service quality. Existi…
cs.CR2025
Taming Double-Spending in Offline Payments with Reputation-Weighted Loan Networks
Nektarios Evangelou, Rowdy Chotkan, Bulat Nasrulin +1
Blockchain solutions typically assume a synchronous network to ensure consistency and achieve consensus. In contrast, offline transaction systems aim to enable users to agree on an…