> For the complete documentation index, see [llms.txt](https://timechain.gitbook.io/neucron/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://timechain.gitbook.io/neucron/core-concepts.md).

# Core Concepts

Core concepts: rails, wallets, keys, MPC shards, custody, accounts, apps, compliance, and agentic wallets.