Retrieve NFT transaction metadata

Question

i've minted some NFTs with 721 metadata in the transaction and am now looking to retrieve the metadata information for further processing. I've send these NFTs around a bit so the utxo is not the minting transaction. Is there a way to retrieve this information using the cardano-cli or cardano-wallet commandline? Or are there other suggestions for doing this. I'm working on the testnet currently. Thanks a lot in advance!

Answer 1

I found that it is possible in the following way:

• Use the Wallet API to find a minting transaction from a list of all of your wallet's transactions https://input-output-hk.github.io/cardano-wallet/api/edge/#operation/listTransactions. You can find here also metadata but for a better format, you can proceed to the below step.
• Use blockfrost.io API to get metadata from minting transaction https://docs.blockfrost.io/#tag/Cardano-Transactions/paths/~1txs~1{hash}~1metadata/get

Alternatively, you can use https://github.com/input-output-hk/cardano-db-sync to sync the whole node to Postgres DB from where you can query metadata https://forum.cardano.org/t/cardano-db-sync-query-metadata/74386

The third way is to use https://input-output-hk.github.io/offchain-metadata-tools/. By my understanding, the main purpose of this tool is to verify native tokens. It requires to be done pull request to git and after approval, you can do a query with this https://input-output-hk.github.io/offchain-metadata-tools/api/latest/

Answer 2

Cardanoscan can be used to browse the metadata. Similar services is also available in test net. Sample output is like this