> For the complete documentation index, see [llms.txt](https://docs.tuumio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tuumio.com/protocol-guide/build-a-dapp/tuumio-ledgers.md).

# TuumIO Ledgers

## TuumIO Ledger specifications

A TuumIO ledger is used to store and manage data related to events or transactions within the network. If necessary, include details about `tuumIO_ledgers` and `tuumIO_ledger_tags` in your protocol.

Use tags to categorize data within TuumIO ledgers, such as Appointments, Prescriptions, Results, and others.

| Field Name | Value  | Description                             |
| ---------- | ------ | --------------------------------------- |
| id         | string | The unique ID of the TuumIO ledger tag. |
| name       | string | The name of the TuumIO ledger tag.      |

{% code title="Example:" %}

```json
        "care_ledger_tags": [            
            {
                "id": "clt-Answer-QA",
                "name": "Answer QA"
            },
            {
                "id": "clt-Request-Appointment",
                "name": "Request Appointment"
            }
        ],
```

{% endcode %}

Declare the attributes and values for the TuumIO ledgers.

| Field Name           | Value  | Description                                                                       |
| -------------------- | ------ | --------------------------------------------------------------------------------- |
| id                   | string | The unique ID of the tuumIO ledger.                                               |
| name                 | string | The name of the tuumIO ledger.                                                    |
| description          | string | The description of the tuumIO ledger.                                             |
| event\_id            | string | The reference ID of the event to be recorded in the tuumIO ledger.                |
| private\_cards       | array  | The cards with consent to view.                                                   |
| public\_cards        | array  | The cards associated to the event record, which can be shared across the network. |
| tuumIO\_ledger\_tags | array  | The reference IDs of the tuumIO ledger tags.                                      |

{% code title="Example:" %}

```json
        "care_ledgers": [
            {
                "id": "cl-e-PSbUgucq4Z8zCSemaBiuSyc2uijm8",
                "name": "Answer QA",
                "description": "Answer QA",
                "event_id": "e-w-broad-sendqa-next",
                "private_cards": [],
                "public_cards": [
                    "cd-wv129h6n1lr1ognzepj2abp1iqvp"
                ],
                "care_ledger_tags": [
                    "clt-Answer-QA"
                ]
            },
            {
                "id": "cl-e-PSbUgucq4Z8zCSemaBiuSyc2jXg4",
                "name": "Request Appointment from Patient to Doctor",
                "description": "Request Appointment from Patient to Doctor",
                "event_id": "e-w-broad-shareAppt-next",
                "private_cards": [],
                "public_cards": [
                    "cd-mwlyle6o9ko65ojdorbrg259g761"
                ],
                "care_ledger_tags": [
                    "clt-Request-Appointment"
                ]
            }
        ]    
```

{% endcode %}


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