Wire Transfer Formats

A wire transfer is essential for the exchange to transfer funds into a merchant’s account upon a successful deposit (see deposit request). The merchant has to include the necessary information for the exchange to initiate the wire transfer.

The information required for wire transfer depends on the type of wire transfer used. Since the wire transfers differ for each region, we document here the ones currently supported by the exchange.

TEST

The TEST wire format is used for testing and for integration with Taler’s simple “bank” system which in the future might be useful to setup a bank for a local / regional currency or accounting system. Using the TEST wire format in combination with the Taler’s bank, it is thus possible to fully test the Taler system without using “real” currencies. The wire format for “TEST” is very simple, in that it only specifies an account number in a field “account_number” and the URI of the bank:

  • type: the string constant “test”
  • bank_uri: the URI of the bank (starting with http:// or https://)
  • account_number: the number of the account at the bank

The account number given must be a positive 53-bit integer. Additional fields may be present, but are not required.

Note that a particular exchange is usually only supporting one particular bank with the “TEST” wire format, so it is not possible for a merchant with an account at a different bank to use “TEST” to transfer funds across banks. After all, this is for testing and not for real banking.

SEPA

The Single Euro Payments Area (SEPA) [1] is a regulation for electronic payments. Since its adoption in 2012, all of the banks in the Eurozone and some banks in other countries adhere to this standard for sending and receiving payments. Note that the currency of the transfer will (currently) always be EURO. In case the receiving account is in a currency other than EURO, the receiving bank may covert the amount into that currency; currency exchange charges may be levied by the receiving bank.

For the merchant to receive deposits through SEPA, the deposit request must contain a JSON object with the following fields:

  • type: the string constant “sepa”
  • iban: the International Bank Account Number (IBAN) of the account of the beneficiary
  • name: the name of the beneficiary
  • bic: the Bank Identification Code (BIC) code of the beneficiary’s bank
  • salt: random salt (used to make brute-forcing the hash harder)
The JSON object may optionally contain:
  • address: the address of the Beneficiary

The implementation of the SEPA plugin is currently incomplete. Specifically, we need a working implementation of libebics which is a sub-project trying to implement the EBICS [2] standard.

[1]SEPA - Single Euro Payments Area: http://www.ecb.europa.eu/paym/sepa/html/index.en.html
[2]EBCIS - European Banking Computer Interface Standard http://www.ebics.org/