Asset Explorers useless? Get Full List of Asset Owners via RPC from Fullnode

Hi

i have a RVN Token for my Website, which is used as kind of shareholder Token since some months. We do weekly payments for all token holders. Now we found out, that all available Assets Explorers for Ravencoin are not really working at all :/

https://www.assetsexplorer.com/ Does not even show Tokens if the Address holds it, so its pretty useless in general – and https://ravencoin.asset-explorer.net/ has a bug, it does also not show balance per address, and the "token overview" does just hide balances – in our case 91 balances are just hidden, so i am not able to get a full list of token holders by any of the "official" assets explorers – which was a bit surprising for me – shouldn't this be a very core function for an Asset Chain ?!

Anyways, as i am a web developer with 12 years of experience, i have also integrated full nodes for several coins into my webservices – i would prefer to make a new asset explorer and give it opensource.

For the start, i would need to find out how to get information about assets in the Nodes. I have a RVN Fullnode up and running, which i use for payment processing. but in the RPC Interface i cannot find any command that seems to be related to assets – is here maybe anyone that could help me with that? i Would need to know how to get a list of tokens for a specific address, and also how to get all adresses holding a specific token. Anyone here that has some in-depth knowledge of Ravencoin Core or handling of assets with a node?