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Asset Transfers

An asset transfer is an asynchronous exchange of an asset or an amount to a recipient.

A recipient is an existing Centrapay user or someone who can create an account to claim the asset transfer by verifying their phone number.

Contents

Asset Transfer lifecycle

Asset Transfer goes through different lifecycle stages.

State Description
created Asset transfer successfully created
sent Asset transfer notification (sms, email) was sent to a new user
expired Asset transfer expired as new user didn’t create his account and claimed the asset. This is very short lived state
returned Asset transfer expired and was returned to original owner
claimed Asset transfer was successfully completed

Create an Asset Transfer

POST https://service.centrapay.com/api/asset-transfers

You can transfer a discrete asset or an amount from a wallet to a recipient.

Here’s an example of a $60 transfer from a wallet:

curl -X POST "https://service.centrapay.com/api/asset-transfers" \
  -H "x-api-key: 1234" \
  -H "content-type: application/json" \
  -d '{
    "assetId": "sai2Pai7ohgongo",
    "value": "6000",
    "recipientAlias": "+64221231234"
  }'

For discrete assets, you transfer the entire value to the recipient as balances can’t be transferred between accounts. Here’s an example:

curl -X POST "https://service.centrapay.com/api/asset-transfers" \
  -H "x-api-key: 1234" \
  -H "content-type: application/json" \
  -d '{
    "assetId": "YGRo6TYYSxH3js7",
    "recipientAlias": "+64221231234"
  }'

Required Fields

Parameter Type Description
assetId String Id of a discrete asset to transfer or wallet to draw from.
recipientAlias String Phone number, email or handle of receiver.

Optional Parameters

Parameter Type Description
description String Shows up in transaction history against the transfer
message String A message which shows up in the SMS of the receiver. 100 character limit
value BigNumber Amount to send. Required for wallet transfers, and units depend on the wallet ledger type.
senderName String Human readable name for the sender
senderAlias String Phone number, email or handle of sender to return asset to. See (★) note below.

★ Only provide a senderAlias value if you are invoking asset transfer with api key. In case that recipient doesn’t claim asset in 2 weeks or asset was sent to an invalid Alias (wrong phone number etc) we will use senderAlias to return the asset. If asset cannot be returned to a sender it will be returned to asset owner.

Example response payload 

{
  "id": "M7Kn2stAxNa6ri7h",
  "status": "created",
  "value": "1000",
  "assetId": "YGRo6TYYSxH3js7",
  "assetType": "epay.nzd.main",
  "description": "$60 Giftcard",
  "message": "Happy birthday",
  "senderName": "My Cafe",
  "recipientAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
  "claimedByAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
  "recipientAlias": "+64212312345",
  "createdAt": "2020-05-01T12:30:00.000Z",
  "updatedAt": "2020-05-02T01:03:37.222Z"
}

The above example has $10 left on a $60 dollar giftcard at the time of transfer.

Error Responses

Status Code Description
403 INSUFFICIENT_WALLET_BALANCE The value of the asset-transfer exceeds the balance on the wallet
403 QUOTA_EXCEEDED The transfer exceeds one or more spend quota limits. See Quota Error Response.

Example webhook response

TBD

{}

Look up an Asset Transfer

After an asset transfer is resolved we scrub the recipientAlias, lastSentTo and message fields to avoid storing PII against our model.

GET https://service.centrapay.com/api/asset-transfers/${id}

curl -X GET "https://service.centrapay.com/api/asset-transfers/M7Kn2stAxNa6ri7h" \
  -H "x-api-key: 1234" \
  -H "content-type: application/json"

Example response payload (ledger asset) 

{
  "id": "M7Kn2stAxNa6ri7h",
  "status": "sent",
  "value": "6000",
  "assetId": "sai2Pai7ohgongo",
  "assetType": "centrapay.nzd.main",
  "description": "$60 Giftcard",
  "message": "Happy birthday",
  "senderName": "My Cafe",
  "lastSentTo": "+64212312345",
  "senderAccountId": "aBc932S9182qwCDqwer",
  "recipientAccountId": "oS3Xom2au3Ooy9aihai",
  "claimedByAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
  "recipientAlias": "+64212312345",
  "createdAt": "2020-05-01T12:30:00.000Z",
  "updatedAt": "2020-05-02T01:03:37.222Z"
}

Example response payload (discrete asset) 

{
  "id": "M7Kn2stAxNa6ri7h",
  "status": "claimed",
  "value": "6000",
  "assetId": "YGRo6TYYSxH3js7",
  "assetType": "epay.nzd.main",
  "description": "$60 Giftcard",
  "message": "Happy birthday",
  "senderName": "My Cafe",
  "recipientAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
  "claimedByAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
  "recipientAlias": "+64*****2345",
  "createdAt": "2020-05-01T12:30:00.000Z",
  "updatedAt": "2020-05-02T01:03:37.222Z"
}

Resolve claimable assets EXPERIMENTAL

When you send another centrapay user cash or assets, they’re automatically assigned to them. However, if they’re not signed up yet then these assets are not immediately assigned.

If unclaimed, asset transfers are returned after 2 weeks.

New accounts should call this endpoint to allocate assets that you’ve been sent.

POST https://service.centrapay.com/api/me/resolve-claimable-assets

curl -X POST "https://service.centrapay.com/api/me/resolve-claimable-assets" \
  -H "x-api-key: 1234"

Example response payload 

{}

List Sent Asset Transfers EXPERIMENTAL

GET https://service.centrapay.com/api/asset-transfers?senderAccountId=${id}

curl -X GET "https://service.centrapay.com/api/asset-transfers?senderAccountId=aBc932S9182qwCDqwer" \
  -H "x-api-key: 1234" \
  -H "content-type: application/json"

Example response payload 

{
  "items": [
    {
      "id": "M7Kn2stAxNa6ri7h",
      "status": "created",
      "value": "6000",
      "assetId": "YGRo6TYYSxH3js7",
      "description": "$60 Giftcard",
      "message": "Happy birthday",
      "senderName": "My Cafe",
      "senderAccountId": "aBc932S9182qwCDqwer",
      "recipientAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
      "claimedByAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
      "recipientAlias": "+64*****2345",
      "createdAt": "2020-05-01T12:30:00.000Z",
      "updatedAt": "2020-05-02T01:03:37.222Z"
    }
  ]
}

List Received Asset Transfers EXPERIMENTAL

GET https://service.centrapay.com/api/asset-transfers?recipientAccountId=${id}

curl -X GET "https://service.centrapay.com/api/asset-transfers?recipientAccountId=oS3Xom2au3Ooy9aihai" \
  -H "x-api-key: 1234" \
  -H "content-type: application/json"

Example response payload 

{
  "items": [
    {
      "id": "M7Kn2stAxNa6ri7h",
      "status": "created",
      "value": "6000",
      "assetId": "YGRo6TYYSxH3js7",
      "description": "$60 Giftcard",
      "message": "Happy birthday",
      "senderName": "My Cafe",
      "recipientAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
      "claimedByAccountId": "9EDxUT91TMsUjoqoQeBuLQ",
      "recipientAlias": "+64*****2345",
      "createdAt": "2020-05-01T12:30:00.000Z",
      "updatedAt": "2020-05-02T01:03:37.222Z"
    }
  ]
}