# TransferRef · FT4 TypeScript client · Chromia Docs (concept)

> type TransferRef = { opIndex : number; tx : GTX;
} Properties opIndex opIndex: number tx tx: GTX

Source: https://docs.chromia.com/pages/ft4-ts-client/types/crosschain.TransferRef/

Type Alias

# TransferRef

On this page

* [Properties](#properties)
* [opIndex](#opindex)
* [tx](#tx)

```signature
type TransferRef = {
    opIndex: number;
    tx: GTX;
}
```

## Properties

### opIndex

```signature
opIndex: number
```

### tx

```signature
tx: GTX
```

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-ts-client/types/crosschain.TransferRef.html)Generated API reference, mirrored from the live docs