Cost and Performance Analysis of Protocols for Token Interoperability in Blockchain Networks

• Fredison Muniz UFPI
• Ronan D. Mendonça UFV
• Emanuel F. de Miranda UFPI
• Ítalo W. F. Cardoso UFV
• Rafael Coelho UFJF
• Alex B. Vieira UFJF
• José A. M. Nacif UFV
• Glauber D. Gonçalves UFPI

DOI: https://doi.org/10.5753/wblockchain.2025.8555

Abstract

Blockchain is a disruptive technology with potential applications in several sectors, such as agriculture, industry, and services. However, interoperability between different blockchains, which allows communication and data exchange between them, is still a challenge. Some protocols have been proposed to address this issue, but performance analyses in real scenarios are lacking. This work proposes a comparison between state-of-the-art interoperability protocols: Chainlink, which is provided via proprietary infrastructure and is currently the most popular, and the Notarial and Hash Block protocols implemented in this work. We conducted experiments with several transactions between different blockchain networks and showed that the Chainlink protocol, despite its popularity, can be up to seven times slower than other protocols and with higher fees reaching up to 78 cents per transaction, highlighting the wide room for innovation in blockchain network interoperability.

Keywords: Blockchains, Interoperability, Chainlink, Notary, Htlc

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