Provides a snapshot of account activity at a particular point in the ledger, as indicated by blockCount.

Represents a single “output” TxOut from a Transaction. Intended to be serialized and sent to the recipient of that TxOut. The recipient is able to use Receipt to validate that a particular TxOut was sent by whoever sent them the Receipt, assuming the public key of the Receipt and the TxOut in question are the same and various other validation checks pass. The Receipt also contains the necessary information to determine whether an expected, incoming TxOut‘s Tx has expired, in which case, if the TxOut is not in the ledger at that point, then the corresponding Tx is no longer eligible to be accepted into consensus.

Security

The Receipt contains the TxOutConfirmationNumber, which is used by the recipient as evidence that a particular party is the one who sent the corresponding TxOut that the Receipt represents. Therefore, care should be taken to ensure that only the sender and the recipient have access to the Receipt, otherwise the recipient could be tricked into misattributing which party sent them a particular TxOut.