Pool deposit is given for every pool registration operation, including those which are only updates

[pbjc]

The pool deposit is only paid when a pool is first registered. After that, further pool registration operations may occur which update the pool parameters. However, currently this is not accounted for and the pool deposit amount is added unconditionally to the metadata of every pool registration operation.

For example, this transaction contains a pool registration: https://cardanoscan.io/transaction/500928bd8bd5e24dcc13610b1e7308dace1caec1bedc481c2d2834c14978b780?tab=poolcertificates

It is clear from the inputs and outputs that no deposit has been paid. Looking at all of the pool registration for this pool, we can see that the deposit is only paid the first time.

Summary:

• Expected: For a given pool ID, the pool deposit is present in the metadata if only if it is the first pool registration for that pool ID.
• Actual: The pool deposit is given for every pool registration.