# Retirement Certificates

Retirement information is available via the Indexer GraphQL endpoint at `https://api.regen.network/indexer/v1/graphql`. Unlike the Marketplace API, this endpoint does not require CSRF authentication.

**Query by transaction hash:**

graphql

```graphql
query IndexerRetirementByTxHash($txHash: String!) {
  retirementByTxHash(txHash: $txHash) {
    nodeId
  }
}
```

The returned `nodeId` can be used to construct the retirement certificate URL:

```
https://app.regen.network/certificate/{nodeID}
```