Check

[Source]

(Added by the [Checks amendment][].)

A Check object describes a check, similar to a paper personal check, which can be cashed by its destination to get money from its sender. (The potential payment has already been approved by its sender, but no money moves until it is cashed. Unlike an Escrow, the money for a Check is not set aside, so cashing the Check could fail due to lack of funds.)

Example JSON

{
  "Account": "rUn84CUYbNjRoTQ6mSW7BVJPSVJNLb1QLo",
  "Destination": "rfkE1aSy9G8Upk4JssnwBxhEv5p4mn2KTy",
  "DestinationNode": "0000000000000000",
  "DestinationTag": 1,
  "Expiration": 570113521,
  "Flags": 0,
  "InvoiceID": "46060241FABCF692D4D934BA2A6C4427CD4279083E38C77CBE642243E43BE291",
  "LedgerEntryType": "Check",
  "OwnerNode": "0000000000000000",
  "PreviousTxnID": "5463C6E08862A1FAE5EDAC12D70ADB16546A1F674930521295BC082494B62924",
  "PreviousTxnLgrSeq": 6,
  "SendMax": "100000000",
  "Sequence": 2,
  "index": "49647F0D748DC3FE26BDACBC57F251AADEFFF391403EC9BF87C97F67E9977FB0"
}

Fields

A Check object has the following fields:

Field	JSON Type	[Internal Type][]	Required?	Description
Account	String	Account	Yes	The sender of the Check. Cashing the Check debits this address's balance.
Destination	String	Account	Yes	The intended recipient of the Check. Only this address can cash the Check, using a [CheckCash transaction][].
DestinationNode	String	UInt64	No	A hint indicating which page of the destination's owner directory links to this object, in case the directory consists of multiple pages.
DestinationTag	Number	UInt32	No	An arbitrary tag to further specify the destination for this Check, such as a hosted recipient at the destination address.
Expiration	Number	UInt32	No	Indicates the time after which this Check is considered expired. See [Specifying Time][] for details.
Flags	Number	UInt32	Yes	A bit-map of boolean flags enabled for this object. Currently, the protocol defines no flags for Check objects. The value is always 0.
InvoiceID	String	Hash256	No	Arbitrary 256-bit hash provided by the sender as a specific reason or identifier for this Check.
LedgerEntryType	String	UInt16	Yes	The value 0x0043, mapped to the string Check, indicates that this object is a Check object.
OwnerNode	String	UInt64	Yes	A hint indicating which page of the sender's owner directory links to this object, in case the directory consists of multiple pages. Note: The object does not contain a direct link to the owner directory containing it, since that value can be derived from the Account.
PreviousTxnID	String	Hash256	Yes	The identifying hash of the transaction that most recently modified this object.
PreviousTxnLgrSeq	Number	UInt32	Yes	The [index of the ledger][Ledger Index] that contains the transaction that most recently modified this object.
SendMax	String or Object	Amount	Yes	The maximum amount of currency this Check can debit the sender. If the Check is successfully cashed, the destination is credited in the same currency for up to this amount.
Sequence	Number	UInt32	Yes	The sequence number of the [CheckCreate transaction][] that created this check.
SourceTag	Number	UInt32	No	An arbitrary tag to further specify the source for this Check, such as a hosted recipient at the sender's address.

Check ID Format

The ID of a Check object is the [SHA-512Half][] of the following values, concatenated in order:

• The Check space key (0x0043)

• The AccountID of the sender of the [CheckCreate transaction][] that created the Check object

• The Sequence number of the [CheckCreate transaction][] that created the Check object. If the CheckCreate transaction used a Ticket, use the TicketSequence value instead.