Webhook
Quick Answer
A webhook is an HTTP callback delivering real-time payment notifications (received, confirmed, settled) to the merchant's server — essential for automated order fulfilment.
Full Definition
A webhook is an HTTP callback delivering real-time event notifications from one system to another. In crypto payments, webhooks notify the merchant's server when a payment is received, confirmed, expired, or settled. Instead of polling the API, the gateway pushes notifications to a configured URL. Webhooks are essential for automated order fulfilment, inventory management, and accounting. Payloads are typically signed for verification.
Related Terms
Wallet
A cryptocurrency wallet stores private keys enabling users to send, receive, and manage digital assets. Types include hot wallets (MetaMask), cold wallets (Ledger), and smart contract wallets (Safe).
WalletConnect
WalletConnect is an open protocol for secure communication between dApps and wallets via QR code or deep link — a standard integration for crypto payment checkout flows.
Web3
Web3 is the vision for a decentralised internet built on blockchain where users own their data and assets. Web3 payments enable permissionless, borderless, programmable money transfers.
Wrapped Token
A wrapped token is crypto pegged to another asset on a different chain (e.g., WBTC is Bitcoin on Ethereum), enabling cross-chain liquidity for payments and DeFi.