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

# TxCustoms

#### Blockchain operations

* custom\_json

#### Columns

| Name                     | Description                                                         |
| ------------------------ | ------------------------------------------------------------------- |
| tid                      | less than 32 characters long identifier                             |
| json                     | a proper utf8 / JSON string                                         |
| required\_posting\_auths | list of accounts who signed the transaction using their posting key |
| required\_auths          | list of accounts who signed the transaction using their active key  |
| required\_posting\_auth  | the first value from required\_posting\_auths                       |
| required\_auth           | the first value from required\_auths                                |

#### Description

The `custom_json` operation provides a generic way to add higher-level protocols on top of witness consensus. This operation is designed to be human-readable/developer-friendly. There is no validation for this operation other than that the required auths are valid.

`required_posting_auths` and `required_auths` are arrays. If more than one authority has been included in the operation, the `required_posting_auth` and `required_auth` columns will contain the first value from their respective arrays


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