All Questions
2,735
questions
0
votes
0
answers
4
views
ADA locked on Trust - 2 delegations*( only one should be active ) - Now cant claim & reflects 2 balances
Good afternoon all
I recently unstaked or attempted to unstake ada & it looked as if it was going from 1 validator to another , my problem is everything is stuck now. I cannot claim , I cannot ...
0
votes
0
answers
15
views
stake pools - do they encourage centralisation?
Quote from cardano docs:
The higher is the stake in a pool, the more rewards will be assigned
to its owners.
Doesn't this mean that the bigger the pool is the more profitable it is and therefore it ...
0
votes
1
answer
13
views
pub-key hash for Plutus Pioneers - self-certification challenge
The entry form for the Plutus Pioneers - self-certification challenge reads as follows:
Please provide a Cardano public key hash
I am guessing this should be associated with a wallet.
In general I ...
- 215
0
votes
1
answer
26
views
Cardano Node Compiler Error libsodium Fedora
for some reason i'm unable to compile cabal projects related to cardano projects on this system. not sure what could of changed recently as aside from recent system updates i haven't changed much. or ...
- 13
0
votes
1
answer
18
views
How to build smart contract depending on trusted server for additional information
I am trying to build a smart contract that will need to rely on off-chain information from a trusted server in order to gather to the state of something which will impact on how the UTXO should be ...
- 13
0
votes
1
answer
15
views
Examples of open source production level DApps on Cardano?
I am looking for Cardano DApps which are:
Actually deployed and used on mainnet
Have published their source code (at least on-chain part)
Examples of non-Plutus PL used (like Plutarch, Aiken, ...) ...
- 101
1
vote
1
answer
22
views
Failed to build atlas examples with cabal
I tried both in the main branch and in the atlas-0.3-update branch and get the same result. but when i run cabal build i get the same error fatal: Could not parse object '...
- 13
0
votes
1
answer
24
views
How to obtain signature from the cborhex? If i have simple-tx.signed
{
"type": "Witnessed Tx BabbageEra",
"description": "Ledger Cddl Format",
"cborHex": "84a3008182582088921ae2626e"
}
This is ...
0
votes
1
answer
21
views
Decompiling Plutus Core Binary Encoding
I'm working with Plutus Core smart contracts, and I have the binary encoding of a Plutus Core script. I'm curious to explore the higher-level Plutus code or any human-readable representation of the ...
0
votes
0
answers
3
views
I encounter issues when retrieving metadata for tokens on the Cardano network
I encountered an error while retrieving token metadata as follows:
var policyId = '8bca871dcd4f1dd9588d901d02677b6d2413fd19e4c8febfc353edff';
var assetName = '5045505041'; // PEPPA
var subject = ...
- 13
0
votes
0
answers
16
views
How to analyze the Plutus budget usage?
When I run my minting policy script I get the error
Command failed: transaction build Error: The following scripts have execution failures:
the script for policyId 0 (in the order of the PolicyIds) ...
- 35
0
votes
0
answers
14
views
Some issues encountered when working with Cardano
How can I generate a bech32 address in the following code:
const wallet = new AppWallet({
networkId: 0,
fetcher: blockchainProvider,
submitter: blockchainProvider,
key: {
type: 'root',
...
- 13
0
votes
0
answers
40
views
Mint an NFT using policy script on cardano
I'm trying to run validations before minting an asset/nft on cardano. I have written the policy script using plu-ts and transactions using mesh sdk.
Script
export const mintNFT = pfn(
[datum.type, ...
0
votes
0
answers
28
views
I want to develop my project related to Cardano
I want to develop a personal project related to Cardano. I have read some documents, but they require using project_id from Blockfrost. However, I don’t want to go that route. So, I’m wondering where ...
- 1
0
votes
1
answer
34
views
Retrieve ADA from a UTXO address linked with my ADA account on Ledger
I sent ADA from an exchange to Ledger, to an address listed as part of a set of addresses used as the receive address for a previous transaction.
I chose one of these multiple "To" addresses ...
1
vote
2
answers
79
views
Documentation for developing a personal Cardano project
I am looking to build a personal project related to Cardano. Are there any documents on libraries or APIs to implement functionalities such as checking balance, transferring funds, etc.?
- 13
0
votes
1
answer
30
views
Why do i loose all wallets and need to resync after symlinking chain folder?
Since my partition with /home on it started to fill up, i relocated the folder ~/.local/share/Daedalus/mainnet/chain onto another drive.
After moving the files and symlinking to the new location, i ...
- 101
0
votes
1
answer
20
views
Nix error trying to install correct GHC version for Plutus
As recommended by Haskell/Nix expert lan Burzynski, I'm trying to use Nix install the correct GHC version for Plutus as follows:
nix shell nixpkgs#haskell.compiler.ghc8107BinaryMinimal nixpkgs#cabal-...
- 85
1
vote
0
answers
35
views
How to decouple Constr from Data
Imagine I have the following field in the Datum:
{
"fields": [
{
"int": 3810998862
},
{
"int": 18446744073709552000
...
0
votes
1
answer
13
views
How can Mithril update the transactions after taking the snapshot?
Question:
When I check the Mithril explorer, The snapshots will be saved in Mithril Aggreagtor 5 times a day. Light wallets can then download this snapshot to see their transaction history without ...
- 11
0
votes
0
answers
32
views
How can Datum be decoded from utxos that were generated using MeshJs Marketplace Smart Contracts?
I have datum that was formed using the MeshJS Marketplace Smart Contract.
Can someone help me with the process to decode the datum. I have tried various methods mentioned in their discord with no ...
- 1
0
votes
1
answer
24
views
Securing Stake Pool With Hardware Wallet
was looking at this project for securing cardano stake pool node with a hardware wallet (trezor specifically) https://github.com/vacuumlabs/cardano-hw-cli
just curious if anyone out there has used ...
- 13
2
votes
1
answer
57
views
Loading specific Datum JSON with Map structure into Plutus type
We have a specific Datum, taken from Orcfax oracle UTXO:
https://preprod.cexplorer.io/datum/9ced750ebbb2c9a9eac2e07a91525cadd3bfab23950089faa3e3a55517d1033f
the part we are interested in is the very ...
0
votes
1
answer
20
views
Creating a Testnet node ( stake pool ) on Ras Pi
I did watch this series on YT for Ras Pi - https://www.youtube.com/watch?v=GBdpE1ta1EU&list=PLBhbLwOuj0DfTnneuG3vyoDHY7Dv_aiyq&index=10
But I have a doubt about the updated method.
Is Cabal ...
0
votes
1
answer
34
views
Stopping Cardano node... Daedalus Mainnet (5.3.0#44942bd51)
I have just installed Daedalus Wallet V. 5.3.0 for the first time, in order to stake my ADA Cardano 3,800.00 tokens. I ran the 24 hour initialization synch before loading any ADA. that worked fine. ...
0
votes
0
answers
19
views
Is Plutus compiler backend producing code cheap enough for production purposes?
I have heard a couple of times, that is hard to make Plutus produce non-costly code, and one should consider writing scripts on a level with Plutarch's help instead. Still, I never get real reasons ...
- 101
0
votes
0
answers
14
views
Graphql-engine docker images
Anybody now the github for how the following docker images are being build.
https://hub.docker.com/r/inputoutput/cardano-graphql-hasura/tags
The image is used in https://github.com/cardano-foundation/...
- 1
0
votes
1
answer
27
views
How web3 protocols know which UTXOs should be consumed
I'm trying to get the history interaction of a wallet on Levvy Fi via Cardano db sync. But I find it difficult to understand how Levvy Fi generates a wallet with their scripts and how they know which ...
- 125
0
votes
1
answer
18
views
I want to mint an NFT using a JSON file using plu-ts, but I dont know how and where to start
I want to mint an NFT using a JSON file using plu-ts, but I don't know how and where to start.
Do I need to create a Node? OR Do I need to write it in Haskel? I have read and performed everything from ...
1
vote
1
answer
85
views
Cannot find utxo using cardano-cli on docker cardano-node preprod
I am trying to follow the project based learning program but get stucked here:
https://plutuspbl.io/modules/102/1023
I started the docker container for cardano-node (https://hub.docker.com/r/...
- 63
1
vote
1
answer
36
views
Missing inline_datum_id in tx_out table
I'm trying to get the specified transaction's datum value, but it didn't appear in the cardano-db-sync db. Can anyone enlighten me, please?
the transaction: https://cardanoscan.io/transaction/...
- 125
0
votes
0
answers
87
views
MeshJs integration With Next 13 Error: Element type is invalid. Received a promise that resolves to: [object Promise]
I am trying to create a connect button to the Nami Wallet where the user can register so I can take the public address, network id, and so on as I need it for the backend.
To implement the Nami wallet ...
- 101
1
vote
1
answer
33
views
DBSync: Querying ma_tx_out
I queried ma_tx_out and used the fingerprint of an asset to get its ident so I could get the tx_out_id to get the most recent tx_out for a given asset - but that asset is only in that tx_out because ...
- 342
0
votes
1
answer
31
views
How to query input UTXOs of a transaction
Could anyone help to query input UTXOs of a transaction, please?
I tried to use tx_in and tx_out tables to view the detail inputs and outputs of the transaction https://cardanoscan.io/transaction/...
- 125
0
votes
0
answers
25
views
Platforms calculating epoch start/end timestamps off by 1 second?
I've seen this many times now and I believe it's wrong, or at least strange. I'd like to see what you folks have to say.
Let's take a look at any random epoch, say 400, and request Koios, Blockfrost ...
- 619
1
vote
1
answer
19
views
Asses Utxos Time In On-Chain Code
Can you assess the time a Utxo was created in on-chain code?
i.e. A transaction to a smart contract that can claim only Utxos - in that contract address - sent in a specific time period?
- 147
0
votes
0
answers
9
views
Getting problem with sendPayment method in cardano-wallet-js
I am following (https://developers.cardano.org/docs/get-started/cardano-wallet-js/) this document for development using cardano-wallet-js. And using below script for sendPayment, but getting error to ...
0
votes
0
answers
14
views
How to get pointer to an actual cardano address by pool script hash in format "script...."?
The address format is script15ew2tzjwn364l2pszu7j5h9w63v2crrnl97m074w9elrkxhah0e. In this example from https://github.com/DefiLlama/DefiLlama-Adapters/blob/main/projects/minswap/index.js, you can ...
- 41
0
votes
0
answers
18
views
Unable to interact with cardano blockchain using cardano-wallet-js
My node is running on 6000 port. And cardano-wallet is running on 6002 port.
ubuntu@ip-172-31-44-6:~/cardano/testnet$ netstat -tuln | grep 6000
tcp 0 0 0.0.0.0:6000 0.0.0.0:* ...
1
vote
1
answer
16
views
Restore state snapshot running out of disk space
I'm following this guide to restore the latest state of the chain to my local machine
https://github.com/input-output-hk/cardano-db-sync/blob/master/doc/state-snapshot.md
while running the restore job ...
- 125
0
votes
1
answer
18
views
Historical price data for Cardano native assets
Does anyone know where I can get historical price data for Cardano native assets? Data that can subsequently be used for data analysis and visualization. Something similar to what taptools is using ...
- 21
0
votes
0
answers
6
views
What DAPPS Can Be Built On EUTXO Chains That Account Based Chains Cannot Make?
I remember reading that the EUTXO model is a superset of the account-based model. My question is does this mean that there are some types of Dapps that can only be built on EUTXO chains, and if so ...
- 972
0
votes
1
answer
15
views
Blockfrost API error with pycardano
I get blockfrost.utils.ApiError: {'status_code': 400, 'error': 'Bad Request', 'message': 'Invalid address for this network or malformed address format.'}
when using pycardano and this code
# Create a ...
- 101
0
votes
0
answers
16
views
How to query cardano blockchain related data like createwallet, getnewaddress, getbalance , sendtoaddress
I have done cardano node setup and sync it 100% And also install an cardano wallet using CLI. Now I want to interact with cardano using node js, can someone please tell me how we can do basic ...
0
votes
0
answers
13
views
(Failed to build scrypt-0.5.0. The failure occurred during the configure step.)
Getting erro rwhile doing "cable build all".
OS
Your OS:
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Cable version :
cabal-install version 3.6.2.0
compiled using ...
0
votes
1
answer
17
views
pycardano library seed phrase
found nice examples generating verification keys and payment keys but I don't get to same time generate the seed phrase. Without the seed phrase I cannot open the wallet in a hot wallet to view it and ...
- 101
0
votes
1
answer
39
views
Why is there no real Wallet Plugin for Firefox
It seems that wallets are not able to implement cip30 for firefox, what is the hurden to do it, and why does it work for chrome?
- 691
0
votes
0
answers
34
views
Getting error while submit sign transaction
I am try to submitting sign transaction on Rosetta (https://ada-rosetta.nownodes.io/construction/submit) but, each time getting below error.
TTL is already higher than slot.
Request
{
"...
0
votes
0
answers
13
views
Coming from ethereum I am looking for the Cardano equivalent of https://remix.ethereum.org/ for quick development
I am coming from the Ethereum world, where I got started with https://remix.ethereum.org/ really fast. What is the equivalant in the Cardano world so that I can experiment fast just using my web ...
- 101
1
vote
0
answers
29
views
cardano-db-sync How could we define an asset as NFT?
Could anyone tell me if is there any way to check if an asset is NFT using the database of cardano-db-sync?
I tried to look at tx_metadata table and check if in json field contains an image, but many ...
- 125