5 votes

Minting a NFT (collection) with Blockfrost

You don't need blockfrost, just learn the cardano-cli and you can make anything. https://developers.cardano.org/docs/native-tokens/minting-nfts/ Download the Testnet version of Daedalus and get tADA (...
user avatar
4 votes

Blockfrost doesn't find address

db-sync based API services such as blockfrost and koios can't find unused addresses because they are not "db-synched" Cardanoscan uses his own backend and library, to decode the bech32 and ...
user avatar
4 votes
Accepted

Received the transaction id but the transaction never happened

The chain has been pretty congested since sundaeswap launched. It may take some time between transaction submission and inclusion into a block. If your TTL or --invalid-hereafter parameter is too ...
user avatar
  • 2,961
4 votes
Accepted

I hear that Daedalus Is a Full Node Does That Mean I Can Set Up a DB Sync Server On Top of It?

Daedaldus consists of two processes, cardano-node and the wallet itself. Yes, it is possible to connect a db-sync instance to the cardano-node.
user avatar
3 votes

PPViewHashesDontMatch and UnspendableUTxONoDatumHash error on redeeming funds from week03 example

Order of parameters is important!!! From cardano-cli transaction build --help: Usage: cardano-cli transaction build ...
user avatar
3 votes

Short address crashed blockfrost calls

Those are called Enterprise addresses, originally intended for exchanges but everyday users have started to adopt them for various reasons. Unfortunately, I can't speak to why Blockfrost API chokes ...
user avatar
3 votes

Minting a NFT (collection) with Blockfrost

We can mint NFTs on cardano without smart contracts. There are some projects which help to do it in a browser like https://namiwallet.io/, but you can do it via CLI
user avatar
3 votes

Cardano Node + DB Sync + Graph QL vs. Blockfrost API

I've been on a bit of a journey with this so might be able to add some insight. We originally started by running our own node inside our Kubernetes cluster, alongside a cardano-wallet container that ...
user avatar
  • 324
3 votes
Accepted

Blockfrost, GrapgQL or any API for cardano help, working with javascript

Using the Blockfrost SDK is pretty straight forward, as in this example: import { BlockFrostAPI } from '../src/index'; async function run() { const API = new BlockFrostAPI({ projectId: 'YOUR ...
user avatar
3 votes
Accepted

Is the Transaction Hash from block frost the same as the transaction id?

Yes, the tx hash and tx id are the same. The terminology is getting used interchangably.
user avatar
  • 724
2 votes

How can I create a serialized transaction that can be submitted to the blockchain without a local full node?

To add to @eddex's answer, another option would be to use the Emurgo's cardano-serialization-lib. There are not many examples available in their documentation, unfortunately. Link: https://github.com/...
user avatar
2 votes
Accepted

How can I create a serialized transaction that can be submitted to the blockchain without a local full node?

There is the cardanosharp-wallet library that provides this functionality. They have a section in their README.md that explains signing transactions.
user avatar
  • 3,026
2 votes

How to get Policy Script for a specific policy-ID

As stated in other answers the minting policy script is used as a witness in the minting transaction and thus available on chain. Community members made tools for extracting such data. Here is a great ...
user avatar
  • 803
2 votes

Cardano Node + DB Sync + Graph QL vs. Blockfrost API

I think the best answer is that it depends on your specific use case. A lot of people start their project using just Blockfrost as they do not want to invest a lot of resources into their ...
user avatar
2 votes

Is secure to Fetch Data from BlockFrost from the Front-End?

It is not a recommended practice, as you said yourself, it will leak your security token to the public. Blockfrost is an alternative way to access the Cardano blockchain, it is not a replacement for ...
user avatar
2 votes

How to obtain wallet addresses of stake pool delegators?

You were onto the right idea, try the blackfrost approach again. After calling /accounts/{stake-address}/addresses endpoint you will see a list of addresses linked to the stake address. Pick any ...
user avatar
2 votes
Accepted

What is the difference between "on-chain-metadata" and "metadata" in the Blockfrost Endpoint

Yes. onchain_metadata refers to the metadata stored on the Blockchain, according to: CIP0025 metadata refers to off chain metadata, stored on Cardano Token registry
user avatar
  • 1,624
2 votes
Accepted

Is there a way to set a trigger on Blockfrost to know when an asset has been moved?

I don't think Blockfrost offers event based callbacks like that. You might want to look into tangocrypto, but as far as I can tell they also don't offer webhooks for this specific type of event: https:...
user avatar
  • 436
2 votes

how to generate cardano new address using blockfrost.io?

Short answer is no, because it poses a security risk for both them (generating and transmitting keys over the network) and the end-user consuming their service to do so (trusting the API not to log or ...
user avatar
  • 326
1 vote
Accepted

find holders from same policy but different asset name

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~...
user avatar
  • 939
1 vote
Accepted

How to retrieve an addresses transaction history inside a plutus contract

The current state of Plutus makes this impossible to do. Instead, you have to try and use a custom DB-sync server, and then construct the off-chain code in such a way that it passes the looked-up ...
user avatar
1 vote

Blockfrost doesn't find address

Here is the answer of the blockfrost support team: Our API returns 404 Not Found for any resource that does not exist on chain a the moment, even when in theory, it could exist. These are typically ...
user avatar
  • 11
1 vote

How to interpret asset transactions data for a NFT?

Correct, that is the history of transaction of that specific asset That is the index of the transaction within a block block_height is the height of the block, in other words, it is the number of the ...
user avatar
1 vote

How to obtain wallet addresses of stake pool delegators?

What I do is query & grab all the data I need from: https://cardanoscan.io/pool/f8e64037e3917cd7cb94969a5374e11b9e6c939b4b69118a8eb4509f?tab=delegators And then send whatever I want using cardano-...
user avatar
1 vote
Accepted

How to connect to Testnet on Blockfrost API with blockfrost-js

To connect to the Testnet with blockfrost-js initialize it like this: const API = new BlockFrostAPI({ projectId: 'YOURAPIKEYFORTESTNET', isTestnet: true });
user avatar
  • 184
1 vote

Burn token using blockfrost java sdk?

There is a great post on the Cardano form that goes in-depth on different types of burning methods [1]. Note that these tokens send to such addresses still exists but can't be transferred anymore by ...
user avatar
  • 803
1 vote

Unable to view images from ipfs.blockfrost.dev

This has been solved internally by Blockfrost support. The end user had configuration problem with his operating system when all the .dev domains were redirected to a different website.
user avatar
1 vote
Accepted

How to get Policy Script for a specific policy-ID

When minting a token in Cardano, we sign (witness) the transaction with the input credentials for consuming the input, and ALSO it is required to provide the minting native script (token policy) as a ...
user avatar
1 vote

How to get Policy Script for a specific policy-ID

You can't get that information, unless the creator publish it because the policy id is the hash of the policy script. For example, here: Spacebudz policy and here Spacebudz FAQ - Is this actually an ...
user avatar
  • 1,624
1 vote

How to create and sign a transaction on a mobile device?

Yes, sure, you can use Emurgo's serialization library to create the transactions and Blockfrost's Swift 5 SDK to submit it and fetch Cardano blockchain data. Yoroi-mobile project might be an ...
user avatar

Only top scored, non community-wiki answers of a minimum length are eligible