# finalizepsbt - Bitcoin SV

#### Parameters

`psbt` - string, required

A base64 string of a PSBT

`extract` - boolean, optional, default=true

If true and the transaction is complete, extract and return the complete transaction in normal network serialization instead of the PSBT.

#### Request

```java
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \ 
--data-raw '{"jsonrpc": "2.0",
"method": "finalizepsbt",
"params": ["psbt", null],
"id": "getblock.io"}'
```

#### Response

```java
null
```