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Merge pull request #3127 from XRPLF/mpt_immutability

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Mention that MPT Metadata is immutable
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Dennis Dawson
2025-06-02 15:37:59 -07:00
committed by GitHub
parent e606c76d06 f6da72a5e4
commit ba47d9531e
2 changed files with 4 additions and 3 deletions
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docs/concepts/tokens/fungible-tokens/multi-purpose-tokens.md
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@@ -14,7 +14,7 @@ Multi-purpose tokens (MPTs) are a more compact and flexible type of fungible tok
MPTs let you take advantage of ready-to-use tokenization features with a few lines of code. You can create many token experiences from one token program itself. Notable features include:
- MPTs store their metadata directly on the XRPL blockchain.
- MPTs store their metadata directly on the XRPL blockchain. Once set, the metadata is immutable.
- A 1024-byte URI field provides a metadata pointer that allows you to use an off-chain source for metadata in addition to the on-chain source. This lets your application access necessary information directly from the chain, prompting higher interoperability for tokens, without losing the ability to attach additional information.
- MPTs can have a fixed token supply where you set a cap on the maximum number of tokens that can be minted.
- You can define MPTs as non-transferable, tokens that can only be transferred back to the issuer, but not among tokenholders. Useful for cases such as issuing airline credits or loyalty rewards.

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docs/use-cases/tokenization/creating-an-asset-backed-multi-purpose-token.md
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@@ -13,7 +13,7 @@ _As a financial professional, I want to use multi-purpose tokens to create an as
A multi-purpose token (MPT) is a compact and flexible object that offers the best aspects of fungible and non-fungible tokens. It is the next generation of tokenization on the XRPL. Notable features include:
- MPTs store metadata directly on the XRPL blockchain, with the option of linking to additional off-chain data.
- MPTs store metadata directly on the XRPL blockchain, with the option of linking to additional off-chain data. Once created, the metadata is immutable.
- MPTs can have a fixed token supply, with a cap on the maximum number of tokens.
- MPT issuers can collect transfer fees each time the token is traded.
- MPTs can be non-transferable, for use cases such as airline credits.
@@ -420,7 +420,7 @@ As an example, you might set the following flags when creating your T-bill MPT.
#### Token Metadata
The metadata you provide is what distinguishes your token from other MPTs. The following JSON definition shows sample configuration information for a T-bill. Copy and paste the data, or your own metadata, into the **Token Metadata** field.
The metadata you provide is what distinguishes your token from other MPTs. The following JSON definition shows sample configuration information for a T-bill. Copy and paste the data, or your own metadata, into the **Token Metadata** field. Once set, MPT metadata is immutable.
```json
{
@@ -439,6 +439,7 @@ The metadata you provide is what distinguishes your token from other MPTs. The f
"ExternalUrl": "https://example.com/t-bill-token-metadata.json"
}
```
Once you've set your preferred values, click **Generate Transaction** to see the transaction syntax for your settings. The `Flags` field displays the sum of the flags you've selected, and the `MPTokenMetadata` is converted to a hexidecimal string.
![Generated syntax for MPTokenIssuanceCreate transaction](../../img/uc-mpt1-t-bill-mpt-generator-generate-code.png)