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You will learn how to configure webhooks to receive real-time transaction and media updates. Extra Scoop uses webhooks to notify your newsroom or agency systems when critical asynchronous events occur, such as a deed settling on the blockchain or media finishing verification.

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Supported Events

You can subscribe to the following core event types:
  • escrow.locked: Triggered when an offer is placed and funds are secured in escrow.
  • deed.anchored: Triggered when an eyewitness accepts an offer and the Base L2 smart contract confirms the digital deed.
  • media.ready: Triggered when a purchased asset has completed forensic sealing and is ready for broadcast download.

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Securing Your Webhooks

When Extra Scoop dispatches an event to your configured endpoint, it signs the payload using an HMAC SHA-256 signature. You must verify this signature using your unique webhook secret to ensure the payload originated from Extra Scoop and has not been altered in transit.
1

Extract the Signature

Read the X-ExtraScoop-Signature header from the incoming HTTP request.
2

Compute the Expected Hash

Generate an HMAC SHA-256 hash of the raw request body using your configured webhook signing secret.
3

Compare Values

Compare your computed hash against the provided header using constant-time comparison. If they match, the payload is authentic.