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2 votes
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Plutus Script Validation Metadata

If the NFT was minted using a transaction with metadata (cardano-cli), then the Plutus script won't be able to access this information. This is because you can only feed UTxOs to Plutus validator ...
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Is there a precedent or example for using a cardano NFT for permission verification?

What you say is possible. In this repo you can find an example on how to mint an NFT and then use it to login to a web app. I reckon you can use a similar approach for your use case.
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How to get NFT count of wallet address

You'll probably need two steps for this. First, fetch all assets at the stake address using this endpoint: https://cardano-mainnet.blockfrost.io/api/v0/accounts/{stake_address}/addresses/assets (...
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Cardano CLI - Cardano Transaction Build for NFT from Guide Docs

The minimum Ada value is defined in the protocol parameter here: minUTxOValue So, you can query the network via cardano-cli to dynamically get the minUTxOValue. cardano-cli query protocol-parameters --...
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1 vote

Query assets with cardano-cli

You can use cardano-cli query utxo --address <ADDRESS> --mainnet to check all UTXO's sitting at ADDRESS. ADA balances and policy/asset IDs will be output to STDOUT in the command line.
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How can I allow users to update a public array of data based on whether they own a token or not?

I think there are two kinds of solutions. The first is the most cost efficient and is focused on offchain indexing of the database, anybody can do it but there is no logic onchain. The second one is ...
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  • 803
1 vote

How can I allow users to update a public array of data based on whether they own a token or not?

The transaction size is limited. So your list cannot grow too large. But assuming you stay within these constraints, you can achieve what you want by (i) parametrising your validator with a type that ...
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1 vote

API to get NFT Floor Price

Since the only downside to using the opencnft api seems to be the rate limit, then perhaps you can reach out to them directly and ask for a raise to the limit? Twitter: @opencnft @Kakulukian I do ...
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