Inputs
WebWallet transaction inputs are IOUs. An IOU is a cryptographically signed document that acknowledges a debt and authorizes a transaction to clear it. IOU claims basically describe who (sub) owes what (amt, cru) to whom (aud), when (nbf, exp) and where (iss). Other claims are used for reference or security purposes, such as detecting replay attacks (nce).| PROPERTY | DESCRIPTION | EXAMPLE | | :--- | :--- | :--- | |
iss
(issuance domain) | transaction clearing domain | "wallet.example.com" | |
sub
(subject) | source address, sender | "wS1EU4AtgzD6VDtsrJ..." | |
aud
(audience) | target address, receiver | "wT99yCRnoYrN3KvTte..." | |
amt
(amount) | transaction amount | "100.0" | |
cru
(unit of account) | countspace identifier | "wS1EU4AtgzD6VDtsrJ..." | |
nce
(nonce) | random value for replay attacks | "r4nd0mV41u3" | |
nbf
(notBefore) | threshold date for clearing | "2009-01-03T02:10:00.000Z" | |
exp
(expires) | expiration date | "2016-03-14T09:26:53.589Z" |