Coinflow Webhooks

generated: '2026-07-18'
method: searched
source: https://docs.coinflow.cash/guides/developer-resources/webhooks
spec_type: Webhooks
description: >-
  Coinflow webhook (event) catalog. Coinflow does not publish an AsyncAPI
  document; this is the webhook surface captured from the docs and from the
  WebhookEventType / WebhookCategory / WebhookData schemas in the OpenAPI.
  Merchants configure webhook URLs in the dashboard (Developers -> Webhooks) and
  Coinflow POSTs JSON events, signed for verification.
delivery:
  transport: HTTPS POST (JSON)
  configuration: Coinflow dashboard, Developers -> Webhooks
  resend_operation: resend-webhook
  ingest_operation: post-event
signature:
  header: Coinflow-Signature
  algorithm: HMAC-SHA256
  header_components:
    t: Unix timestamp (seconds) when the signature was created
    v1: HMAC-SHA256 hex digest of "{timestamp}.{raw request body}"
  verification: >-
    Reconstruct "{t}.{raw request body}", compute HMAC-SHA256 with your Webhook
    Validation Key, and timing-safe compare to v1. Verify against the RAW body
    string, not a re-serialized JSON object.
  docs: https://docs.coinflow.cash/guides/developer-resources/webhooks/verifying-webhook-signatures
categories: [Purchase, Subscription, KYC, Withdraw, Marketplace]
versions: [Legacy, Version 1, Version 2, Version 3]
event_types:
  - Card Payment Authorized
  - Card Payment Declined
  - Card Payment Voided
  - Credits Minted
  - ACH Initiated
  - ACH Success
  - ACH Returned
  - ACH Failed
  - ACH Chargeback
  - ACH Batched
  - PIX Failed
  - PIX Expiration
  - Payment Authorized
  - Payment Expiration
  - Settled
  - Wire Initiated
  - USDC Payment Received
  - Subscription Created
  - Subscription Canceled
  - Subscription Expired
  - Subscription Failure
  - Subscription Concluded
  - Card Payment Chargeback Opened
  - Card Payment Chargeback Won
  - Card Payment Chargeback Lost
  - Card Payment Suspected Fraud
  - Payment Pending Review
  - KYC Created
  - KYC Success
  - KYC Failure
  - Sub-merchant KYB Created
  - Sub-merchant KYB Success
  - Sub-merchant KYB Failure
  - Withdraw Pending
  - Withdraw Success
  - Withdraw Failure
  - Seller Blocked
  - Refund
  - Refund Complete
  - Refund Failure
  - Refund Returned
  - Wire Failure
  - Iban Failure
  - Interac Failure
  - CashApp Failure
  - PayPal Failure
  - Venmo Failure
  - Reserve Released
  - Crypto Overpayment
  - Crypto Underpayment
  - Iban RFI Created
  - Iban RFI Submitted
  - Crypto Deposit Funds Received
  - Customer Override Limit Threshold
  - Crypto Payin Funds Received
  - PayPal Payment Authorized
  - PayPal Payment Voided
  - PayPal Payment Chargeback Opened
  - PayPal Payment Chargeback Won
  - PayPal Payment Chargeback Lost
  - Venmo Payment Authorized
  - Venmo Payment Voided
  - Venmo Payment Chargeback Opened
  - Venmo Payment Chargeback Won
  - Venmo Payment Chargeback Lost
  - Disbursed Funds