# Append state proof keys to a participation key

POST

/v2/participation/{participation-id}

Given a participation ID, append state proof keys to a particular set of participation keys

## Authorizations

- **[api_key](https://dev.algorand.co/reference/rest-api/algod/#api_key)**

## Parameters

### Path Parameters

**participation-id**  
required  
string

## Request Body required

The state proof keys to add to an existing participation ID

Select media type application/msgpack  
string format: binary

## Responses

### 200

A detailed description of a participation ID

Select media type application/json

Represents a participation key used by the node.

object

**address**  
required  
Address the key was generated for.  
string

**effective-first-valid**  
When registered, this is the first round it may be used.  
integer

**effective-last-valid**  
When registered, this is the last round it may be used.  
integer

**id**  
required  
The key’s ParticipationID.  
string

**key**  
required  
AccountParticipation describes the parameters used by this account in consensus protocol.

object

**selection-participation-key**  
required  
\[sel\] Selection public key (if any) currently registered for this round.  
string format: byte  
/^(?:\[A-Za-z0-9+/\]{4})\*(?:\[A-Za-z0-9+/\]{2}==|\[A-Za-z0-9+/\]{3}=)?$/

**state-proof-key**  
\[stprf\] Root of the state proof key (if any)  
string format: byte  
/^(?:\[A-Za-z0-9+/\]{4})\*(?:\[A-Za-z0-9+/\]{2}==|\[A-Za-z0-9+/\]{3}=)?$/

**vote-first-valid**  
required  
\[voteFst\] First round for which this participation is valid.  
integer

**vote-key-dilution**  
required  
\[voteKD\] Number of subkeys in each batch of participation keys.  
integer

**vote-last-valid**  
required  
\[voteLst\] Last round for which this participation is valid.  
integer

**vote-participation-key**  
required  
\[vote\] root participation public key (if any) currently registered for this round.  
string format: byte  
/^(?:\[A-Za-z0-9+/\]{4})\*(?:\[A-Za-z0-9+/\]{2}==|\[A-Za-z0-9+/\]{3}=)?$/

**last-block-proposal**  
Round when this key was last used to propose a block.  
integer

**last-state-proof**  
Round when this key was last used to generate a state proof.  
integer

**last-vote**  
Round when this key was last used to vote.  
integer

### 400

Bad Request

Select media type application/json

An error response with optional data field.

object

**data**

object

**message**
required  
string

### 401

Invalid API Token

Select media type application/json

An error response with optional data field.

object

**data**

object

**message**
required  
string

### 404

Participation Key Not Found

Select media type application/json

An error response with optional data field.

object

**data**

object

**message**
required  
string

### 500

Internal Error

Select media type application/json

An error response with optional data field.

object

**data**

object

**message**
required  
string

### default

Unknown Error