A practical glossary for merchants and developers building payment flows. No fluff—just the terms that come up during real-world crypto checkout and settlement.
How many blocks must pass before a transaction is considered final.
The blockchain used to send funds (e.g., TRON/TRC20 for USDT).
A server-to-server notification that the payment status changed.
Processing the same event multiple times without double-applying changes.
When funds are credited and available for payout/withdrawal.
Your internal order id included in payment requests for reconciliation.
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