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+---
+namespace-identifier: solana-caip19
+title: Solana Namespace - Asset
+author: Qiao Liang (@qbig)
+discussions-to: 
+status: Draft
+type: Standard
+created: 2022-06-01
+updated: 2022-06-01
+requires: ["CAIP-2", "CAIP-10", "CAIP-19", "CAIP-30"]
+---
+
+# CAIP-19
+
+*For context, see the [CAIP-19][] specification.*
+
+## Rationale
+
+On Solana, all contracts are stateless and state is instead represented using "accounts". More specifically, all fungible and non-fungible tokens use the same instance of token contracts and for each token:
+
+- 1 single global "mint" account instance is used for the global data like "total supply".
+- each token account represents an account balance belonging to a given address.
+
+The only difference between fungible tokens and non-fungible tokens is that non-fungible token mints have a total supply of 1 and zero decimal place. Both asset type can be identified by their "mint" account. 
+
+
+## Syntax
+
+After the [CAIP-2][] (namespace+chainID), a slash defines an `asset_namespace` and an `asset_reference`. Since both fungible and non-fungible tokens can be identified using the mint account, we use `token` (fungible) and `nft` (non-fungible) as the asset namespaces and the address of the `mint` account as the reference in both.
+
+| Reference   | Equivalent to | See also            |
+| :---        | :----         | :---                |
+| token       | ERC20 Token   | [Metaplex](https://docs.metaplex.com/programs/token-metadata/token-standard) Fungible   |
+| nft         | ERC721        | [Metaplex](https://docs.metaplex.com/programs/token-metadata/token-standard) NonFungible|
+
+
+## Examples
+
+```
+# One Solana Mainnet NFT：Pesky Penguins #398
+solana:4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZ/token:Fz6LxeUg5qjesYX3BdmtTwyyzBtMxk644XiTqU5W3w9w
+
+# Solana Mainnet USDC
+solana:4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZ/token:EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
+```
+
+## Links
+
+[Address Lookup Table Proposal]: https://docs.solana.com/proposals/transactions-v2
+[Account Types]: https://docs.solana.com/terminology#account
+[Address Expressions]: https://docs.solana.com/cli/transfer-tokens#receive-tokens
+[Token Mint]: https://spl.solana.com/token#creating-a-new-token-type
+[CAIP-2]: https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-2.md
+[CAIP-10]: https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-10.md
+[CAIP-19]: https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-19.md
+[CAIP-30]: https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-30.md
+
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).