I have a policy ID with hundreds of NFT with different asset name (for eg TTS19, TTS20, etc)
what is the easiest way to find all addresses/wallets which have this NFT(holders)? I tried with koios and blockfrost but since all nft have a different unique hex asset name I can't show all addresses.
thank you in advanced, TTS17 theTokenSquare
Using Blockfrost you could check for all "assets of the given policy" using this endpoint:
/assets/policy/{policy_id}
(https://docs.blockfrost.io/#tag/Cardano-Assets/paths/~1assets~1policy~1{policy_id}/get)
and then for each asset you can get the holder through this endpoint:
/assets/{asset}/addresses
(https://docs.blockfrost.io/#tag/Cardano-Assets/paths/~1assets~1{asset}~1addresses/get)
A of time of posting available services of blockfrost and koios require you to query combination of multiple endpoints. So therefore for more advanced/specific usage you probably best of querying cardano-db-sync instance your self.
As example you take a look at asset_address_list.sql at github.com/cardano-community/guild-operators repo how to build your query.
