Cardano is a cryptocurrency network and open source project that runs a public blockchain platform for smart contracts. Cardano's internal cryptocurrency is called Ada.
Questions tagged [cardano]
79 questions
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Vesting via Cardano smart contract fails if receiver wallet is empty
Assume vesting code block in Plutus playground. Simply, if receiver wallet has some ADA, the contract works normally. But in case of an empty receiver wallet, transaction will fail because sending money from script to wallet needs an amount of fee…
weera
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How to send ADA (Cardano) signed transaction to testnet?
I have made an ADA signed transaction using this documentation successfully. What I need now is to submit it on testnet networks like cardanoscan. After searching the net, unfortunately I did not find any explorer api to send the transaction. Could…
weera
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2 answers
PlutusPlayground [high REDEEM fees]
I'm learning writing smart contracts in the PlutusPlayground and am getting excessively high fees when redeeming tokens from the example scripts (over 3000 ADA).
Does anyone know why this might happen?
I've seen a couple tutorials going through…
MapMoTa
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what is the ADA (Cardano crypto-currency) SDK?
I'am very new to the blockchain community and I have a new project that i'am starting to work on using the Cardano Blockchain and its crypto ADA.
I stumbeled upon the name "ADA SDK" and I tried to dig deeper and research it more but i can't find any…
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Rails Remote Database Connection Gives No Tables
after creating a rails new project I have modified database.yml to connect to a remote postgresql read-only database that is mantained from a cardano-db-sync node:
development:
<<: *default
adapter: postgresql
encoding: utf8
database:…
user3755529
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Java Program Compile time issue. Runs fine for smaller integer but does not run for a large integer
Look at the code below for Find how many Cardano Triplets exist such that a+b+c<=n
The function is to find out the total cardano triplet, help me optimizing it for larger values Integer
private static boolean isTrue(long a, long b, long c) {
…
Arijeet Mukherjee
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Why we need Ouroboros BFT as a migration phase from Ouroboros Classic to Ouroboros Genesis?
Re https://youtu.be/vgfTHVWaNCY
Why we need to have interoperability layer between Ouroboros Classic and Ouroboros Genesis in form of Ouroboros BFT?
Why not just discontinue all Ouroboros Classic nodes and switch right to Ouroboros Genesis? (Iohk…
srghma
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3 answers
Do I need to learn haskell to write plutus in Cardano?
https://cardanodocs.com/technical/plutus/introduction/
Should I learn plutus? I believe it is a language whereby I can write smart contracts on Cardano
GerM
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2 answers
Are public blockchains scalable?
Is public blockchain implementation scalable enough so that it could be maintained on each computer normal users and why so much of data redundancy?
Consider if a normal user has to do any transaction or others keeps on updating the blockchain the…
Manoj Mohanty
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How to get TransactionUnspentOutput as a hex encoded bytes string programmatically
So basically I want to convert a normal UTxO hash like:
550665309dee7e2f64d13f999297f001763f65fe50bb05524afc0990c7dce0c3
to a TransactionUnspentOutput as a hex encoded bytes string…
Jan Swoboda
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1 answer
How to create cardano light wallet?
I am trying to create light wallet of cardano. these are steps I followed but not able to create it. It create only full node wallet.
METHOD 1
first I run full node
cardano-node run \
--topology /root/cardano-node/mainnet-topology.json \
…
aniket gholap
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How can I export a command that has quotes in it? Im getting an error when I try to nest single quotes within double quote
I am attempting to add this to export in my profile
export CLI ='docker-compose exec cardano-node sh -c "CARDANO_NODE_SOCKET_PATH=/ipc/node.socket cardano-cli"'
This command works with no issue from the command line
docker-compose exec cardano-node…
Dino Anastos
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1 answer
Is it possible to create one NFT one at a time, instead of all at once?
Planning a project and just getting into development for cardano. I want users to receive a randomly generated NFT, but I don't want to limit the number of potential users.
Gatsby
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2 answers
How to authenticate with Blockfrost.io API?
So I'm trying to import Cardano Blockchain data like address balance, amount staked, rewards etc into a Google Sheet. I found this project named Blockfrost.io which is an API for accessing Cardano blockchain info and import it into apps etc.
I think…
Verminous
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What does the .filter(i => i) do in this case?
I'm reading the process being built on
https://developers.cardano.org/docs/integrate-cardano/listening-for-payments-cli/#process-utxo-table
and I'm stuck on the results of this part:
// Calculate total lovelace of the UTXO(s) inside the wallet…
