Considering Chainless Interoperability across Many Parachains

Since the initial appearance of Bitcoin, a wide variety of blockchain projects have been proposed. With an increased demand for exchanging cryptocurrencies between blockchains, it has become important for blockchains to achieve crosschain interoperability, which is the property of storing and fetching information from each other on multiple blockchains. However, public blockchains have a scalability problem of an extremely slow transaction processing capacity. Based on this background, we have considered solving the scalability problem by enhancing the crosschain interoperability. In this paper, we propose a chainless multi-layer consensus, which is a more decentralized method compared to existing blockchain projects when taking into consideration the interoperability, including Polkadot and Cosmos. We conducted some experiments using our implemented node program to evaluate the latency times required to achieve a consensus. As a result of the experiments using a large-scale network constructed with more than 100 parachains, we confirmed that the latency times tend to increase superlinearly when the number of parachains increases to parallel transaction processing. By applying this result, we can estimate the blockchain settings for safely executing a chainless multi-layer consensus while achieving a practical transaction processing capacity.