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

# MetaID Specification

- [Protocol Spec](https://docs.metaid.io/metaid-specification/protocol-spec.md)
- [MetaID Tree](https://docs.metaid.io/metaid-specification/metaid-tree.md)
- [MetaID Tree](https://docs.metaid.io/metaid-specification/metaid-tree/metaid-tree.md)
- [Info Node](https://docs.metaid.io/metaid-specification/metaid-tree/info-node.md)
- [File Node](https://docs.metaid.io/metaid-specification/metaid-tree/file-node.md)
- [FT Node](https://docs.metaid.io/metaid-specification/metaid-tree/ft-node.md)
- [NFT Node](https://docs.metaid.io/metaid-specification/metaid-tree/nft-node.md)
- [Protocols Node](https://docs.metaid.io/metaid-specification/metaid-tree/protocols-node.md)
- [Follow Node](https://docs.metaid.io/metaid-specification/metaid-tree/follow-node.md)
- [MetaID Envelope](https://docs.metaid.io/metaid-specification/metaid-envelope.md)
- [Privacy Model](https://docs.metaid.io/metaid-specification/privacy-model.md)
- [About PIN](https://docs.metaid.io/metaid-specification/about-pin.md)
- [About PoP](https://docs.metaid.io/metaid-specification/about-pop.md)
- [Host](https://docs.metaid.io/metaid-specification/host.md)
- [MetaAccess](https://docs.metaid.io/metaid-specification/metaaccess.md)
- [MetaName](https://docs.metaid.io/metaid-specification/metaname.md)
- [Examples](https://docs.metaid.io/metaid-specification/examples.md)