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 (...
jnprogrammer's user avatar
5 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 ...
Thom's user avatar
  • 354
5 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 ...
Markus - CLIO1's user avatar
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.
Erik de Castro Lopo's user avatar
4 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 ...
Tygar Pool's 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 ...
zhekson's user avatar
  • 3,629
4 votes
Accepted

How to securely call Blockfrost or other API service from Smart Contract?

You can't call API services directly from the smart contract, and this is not something that the "IOG has yet to put that functionality in"; the same behaviour is not possible in any other ...
Michele Nuzzi's user avatar
4 votes
Accepted

How to convert Cardano Address?

About address formation and extracting Stake keys, you can read the CIP-0019 *Edit: this was reply to old question (about address, not address type) : This question does not make sense - you can have ...
RdLrT's user avatar
  • 1,577
3 votes

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 ...
Leo's user avatar
  • 39
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 ...
KugisMugis's user avatar
3 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 ...
Fermat's user avatar
  • 1,862
3 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 ...
Marek Mahut - StakeNuts's user avatar
3 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 ...
BETTR Stake Pool's 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
Mladen Lamešević's user avatar
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 ...
Marek Mahut - StakeNuts's user avatar
3 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/...
Jaanus Varus's 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.
lambda's user avatar
  • 804
3 votes
Accepted

Haskell + Blockfrost toolchain?

I think you want the cardano-api, part of the cardano-node repo. Most things that can be done, it can do. At the very least its the place to start. The cardano-cli provides a set of examples of how to ...
waalge's user avatar
  • 403
3 votes

Calculate tx fees via Blockfrost or any other provider?

Transaction fees are computed based on two factors: size of the transactions, and required resources (memory and CPU steps). As Melroy van den Berg mentioned, transaction size increases the fee ...
keyanm's user avatar
  • 76
3 votes

Blockfrost API and cexplorer.io about an asset does not match

Blockfrost doesn't return the results ordered by quantity (but by time, see here), so you'd have to page through the results to see more than those 100 addresses and find the ones you're looking for. ...
sean's user avatar
  • 1,463
3 votes
Accepted

Could someone explain mangled addresses to me?

A Cardano/ADA address consists of two components; a spending credential and a staking credential. By default, the spending and staking credential are derived from the same private key. However it is ...
Erik de Castro Lopo's 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.
eddex's user avatar
  • 3,753
2 votes

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 ...
Marek Mahut - StakeNuts's 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
georgeos's user avatar
  • 1,754
2 votes

What is supply.locked in the blockfrost API /network endpoint?

Yes, that is correct, it is the amount of ADA locked by contracts. On docs.blockfrost.io:
Marek Mahut - StakeNuts's 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 ...
Marek Mahut - StakeNuts's user avatar
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 ...
keefie's user avatar
  • 431
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:...
LACE pool's user avatar
  • 619
2 votes
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~...
sean's user avatar
  • 1,463
2 votes

find holders from same policy but different asset name

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 ...
mkungla's user avatar
  • 131

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