This repository holds recently created ASMap files encoded for use in Bitcoin Core. Any map included here has been created collaboratively between multiple participants (coordinated in an issue) and verified (in the follow-up pull request). The process is outlined in further detail on Delving Bitcoin.
Users can further verify the integrity of the data with some of the analysis commands available in contrib/asmap/asmap-tool.py (part of Bitcoin Core). There is also a ASMap health check log printed every 24 hours by Bitcoin Core nodes.