auditor
trusted third party that verifies that the `exchange` is operating correctly
bank
traditional financial service provider who offers wire `transfers` between accounts
coin
coins are individual token representing a certain amount of value, also known as the `denomination` of the coin
contract
the proposal signed by the wallet.
denomination
unit of currency, specifies both the currency and the face value of a `coin`
denomination key
RSA key used by the exchange to certify that a given `coin` is valid and of a particular `denomination`
deposit
operation by which a merchant passes coins to an exchange, expecting the exchange to credit his `bank` account in the future using a wire `transfer`
dirty
a `coin` is dirty if its public key may be known to an entity other than the customer, thereby creating the danger of some entity being able to link multiple transactions of coin's owner if the coin is not refreshed first
exchange
Taler's payment service provider. Issues eletronic `coins` during `withdrawal` and redeems them when they are `deposited` by merchants.
extension
implementation of a `wallet` for browsers
fresh coin
a `coin` is fresh if its public key is only known to the customer
master key
offline key used by the exchange to certify denomination keys and message signing keys
message signing key
key used by the exchange to sign online messages, other than coins
offer
specification of the details of a transaction, specifies the payment obligations for the customer (i.e. the amount), the deliverables of the merchant and other related information, such as deadlines or locations; However, it lacks some information that the backend is supposed to provide. In other words, after the backend adds the missing information to the offer and signs it, it becomes a proposal.
owner
a `coin` is owned by the entity that knows the private key of the coin
proof
message that cryptographically demonstrates that a particular claim is correct
proposal
a sketch that has been completed and signed by the merchant backend.
reserve
funds set aside for future use; either the balance of a customer at the exchange ready for `withdrawal`, or the funds kept in the exchange's bank account to cover obligations from coins in circulation
refreshing
operation by which a `dirty` `coin` is converted into one or more `fresh` coins
refund
operation by which a merchant steps back from the right to funds that he obtained from a `deposit` operation, giving the right to the funds back to the customer
sharing
users can share ownership of a `coin` by sharing access to the coin's private key, thereby allowing all co-owners to spend the coin at any time.
signing key
see message signing key.
spending
operation by which a customer gives a merchant the right to `deposit` coins in return for merchandise
transfer
method of sending funds between `bank` accounts
transaction
method by which ownership is exclusively transferred from one entity to another
transaction id
unique number by which a merchant identifies a `transaction`
wallet
software running on a customer's computer; withdraws, stores and spends coins
wire transfer
see `transfer`
wire transfer identifier
subject of a wire `transfer`; usually a random string to uniquely identify the `transfer`
withdrawal
operation by which a `wallet` can convert funds from a reserve to fresh coins