ON DATA AVAILABILITY LAYERS

Summary from the TLDR Crypto newsletter

Data availability layers are emerging as a crucial part of modular blockchain architecture. They ensure that chain data is accessible to all network users, thus driving down costs and enhancing blockchain scalability. Currently, data availability accounts for around 90% of transaction costs. However, costs can be considerably reduced with data availability sampling, by eliminating the need to download entire blocks of data for transaction verification. This facilitates easier interoperability among networks, attracting a broader user base. Startups like Avail, EigenDA, and Celestia are leading in this area, with each offering a unique approach to infrastructure and execution.