Transaction ID (txid)

The unique hash that identifies one transaction on a blockchain; anyone can look it up in a block explorer to see its amount, addresses and confirmations.

#How it works in CryptoLike

CryptoLike records the transaction ID of every transfer it sees for your payments and addresses. A payment lists its transfers in txids[], a deposit to a static address and a payout carry their txid, and the checkout page links each transaction to a block explorer so the payer can follow it. Plugins write the transaction ID into an order note when the transfer is detected.

One transaction can hold several transfers, so CryptoLike identifies a transfer by the transaction ID plus its position: the output number (vout) on Bitcoin and Litecoin, the log index for ERC20 and TRC20 tokens. This is also how a repeated or replayed notification is recognised and never credited twice.

A transaction ID alone does not mean the payment is final. Check the status of the payment, not the explorer: paid comes only after the asset's confirmations, and a reorg can still move or remove a recent transaction.