Webhooks
WalletConnect
USDC
USDT
Ethereum
WalletConnect
USDC
USDT
Ethereum
Signed webhooks for deposits and NFTs
Checkout systems need a reliable paid signal. NxtGateW posts signed events so you can unlock goods without polling explorers.
The challenge
Unsigned callbacks are spoofable. Polling chain explorers is slow and brittle under load.
The solution
Register a callback on wallet create (and NFT webhook endpoints for mint events). Verify HMAC / IPN tokens before updating order state.
How it works
- Set callback URL (and secret) on the wallet or NFT webhook API.
- Wait for deposit or mint workers to finish on-chain work.
- Receive POST with signature headers; verify before trusting amounts.
- Mark the order paid / membership active in your system of record.
What you get
- HMAC-signed deliveries with retry queues.
- Wallet and NFT event families in one platform.
- Test endpoints so you can validate handlers before go-live.
