Hello

after seeing issue #165 we wanted to ask questions regarding the currency we will bid with.

1. Publisher will ask participants to bid in a given currency. How does FLEDGE implement this transfer of information, ie how will the bidding function know what kind of currency the publisher is expecting? It seems that there needs to be a way of "standardizing" this in the FLEDGE Api, as the bidding function can't know ahead of time the exact list of publishers it will be called on, and so it can't know the list of currencies each publisher will require
2. If we assume that the publisher sends the info of the required currency to the bidding function, how is the bidding function supposed to handle this info? Suppose for instance that the bidding logic computes a bid in EUR and the publisher asks us a bidding value in USD. The bidding logic has to perform this EUR -> USD conversion. How in practice would it do it ? Storing fixed exchange rate in the bidding function is not really ideal as it will get stale. Another possibility we see is to store an up-to-date currency info in the key-value server, so that we will retrieve an up-to-date value during bidding. What's your take on this?

thanks!