I need to do an offchain action in an application when a transaction is included in a block that is validated.

Is there a way to register a listener for such a notification? Or is there another mechanism?


1 Answer 1


There is no listener for it. Pooling it in an interval is a common way to do that. The Listening for ada payments using cardano-cli page is worth referring to.

You can also watch the chain from cardano-db-sync or from some Cardano API providers such as Blockfrost.io.

If you use Blockfrost.io, you could use the Websockets link for Blockfrost.io API to create a WebSocket subscription.

  • Did you find out a way to listen for transaction completion?
    – Dawar Ejaz
    Commented Jan 17, 2022 at 10:42

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