IOU Claims
{
"hash": {/*alg,typ,val*/},
"data": {
"iss": "issued-in", // issuer domain "wallet.example.com"
"sub": "subject", // issuer address "wAliceAddress123"
"aud": "audience", // authorized claimers "wBobAddress456"
"amt": "amount", // units to transfer "50.00000000001"
"alw": "allowance", // credit to grant "21000000"
"cur": "currency", // unit of account "AbCdE12345"
"nce": "nonce", // for replay attacks "9876543210"
"ref": "reference", // custom info "foo-bar-baz"
},
"sigs": [/*signatures*/]
}
{
"iss": "issued-in", // issuer domain "wallet.example.com"
...
"iat": "issued-at", // creation date "2008-10-31T00:00:00.000Z"
"nbf": "not-before", // valid from "2009-01-03T00:00:00.000Z"
"exp": "expires" // valid until "2140-05-07T12:00:00.000Z"
}