Get the current balance for a user

Questions
1

Hi guys,

Still learning to understand the Ledger API.

My setup is that I have set up a super user who is basically doing the requests on behalf of my users using the Ledger API. I’ve done a similar operation to the /v2/updates endpoint, where I now get the transactions. The super user was granted the user right to act under a power of attorney, and I can now see the transactions.

My next move, and this is what troubles me, I would like to get the current balance of a user. Is there any magic endpoint where I can get the current balance? I’ve read a little bit that I have to use the /v2/updates endpoint and then accumulate, but is this really my only option?

I’m using the ledger API v 3.4.10

2

Updates If you are already subscribed to /v2/updates and storing the results, then yes, you could use that for summing the amount of holdings.

PQS The Participant Query Store copies updates into a Postgres database. You can then write SQL queries to get all kinds of information, including balances.

Active Contracts In the general case, you can use the /v2/state/active-contracts endpoint to get the UTXO holdings for a party. And then sum. (If you are using the TypeScript Wallet API, there is a function specifically for getting the collection of CIP-56 holdings.)

Canton Coin For CC specifically, the Scan Aggregates API provides a v0/holdings/summary endpoint.

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