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Questions tagged [cardano]

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.

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DecoderFailure in cardano-cli

I'm facing some issues with cardano-cli. I'm using the Daedalus socket and trying to query the testnet. When running this command cardano-cli query tip --testnet-magic 1097911063 it returns the following: cardano-cli: DecoderFailure (LocalStateQuery…
Nuno Lopes
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Can Smart Contract access Data of other Blockchains?

Lets say i created an erc20 token. Now i want to make a smart contract that sends 1 coin to a user if they have X coins on another blockchain like bitcoin. Would that work? Can i read data from other blockchains using a cardano/ethereum/any other…
Timm Nicolaizik
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How I encode the length 32 []byte nonce from golang to hit rust's jormungandr rpc server?

If you look at how this go-cardano-client is making it's handshake request payload: https://github.com/gocardano/go-cardano-client/blob/master/shelley/handshake.go#L64 versionTable.Add(cbor.NewPositiveInteger8(1),…
Andrew Arrow
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Query Cardano Current Supply

the query for current total supply given in the doc doesn't seem to work for me, is off a fraction of a million (according to pooltool.io) and the resulting value keeps rising with time indicating the amount of ADA that is in UTXOs rather than…
user3755529
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How Daedalus wallet identifies a valid cardano payment address?

When a Cardano address is entered for payment, Daedalus identifies it as a valid address immediately. Even if there is a single character change, it shows it as an invalid address. Were are these addresses stored and how it is identified as a valid…
raghu
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Plutus Interpreter Error in Plutus Playground

This code compiles but when I click on Evaluate I get this error. I'm not sure if this is from the playground or not because I used the same code from their new tutorial . The error doesn't show up when I compile it only happens when I attempt view…
jnprogrammer
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Can a private Cardano network be created?

In Ethereum we can use geth to create a private network, for example by defining a genesis block with puppeth and then creating nodes. Is there an equivalent of geth in Cardano and can we create private networks?
Trevor Lee Oakley
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Cardano-node hello world

I went through the installation instructions here: https://github.com/input-output-hk/cardano-sl/blob/develop/docs/how-to/build-cardano-sl-and-daedalus-from-source-code.md When I finally finish installing stack and nix, and get to this point: $…
Mittenchops
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Cardano (ADA) node configuration issues 'npm run cucumber'

Cardano (ADA) node configuration issues npm run cucumber when run npm run test get the error. [nix-shell:~/daedalus]$ npm run test npm ERR! Linux 4.14.12-x86_64-linode92 npm ERR! argv…
Desmond Than
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Issue during instalaiton Cardano-sdk/core

I have an angular application and want to install @cardano-sdk/core to directly work with Cardano, but during installation I get this error, which seems to be in Cardano…
Lilit Mazmanyan
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Cardano Pre Production Testnet TrConnectError

Since the documention of the cardano developer portal is outdated (old testnet) i researched and now know about the new testnets documented here https://book.world.dev.cardano.org/environments.html and on Github. I followed the tutorial on the…
Daykoo
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Key-pair generation for Kadena

Chainweaver uses the following code to generate a key-pair from a Bip 39-generated seed: https://github.com/kadena-io/cardano-crypto.js/blob/c50fb8c2fcd4e8d396506fb0c07de9d658aa1bae/kadena-crypto.js#L336 Is there any documentation regarding this…
herrtim
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upload folder to ipfs using blockfrost

How to upload folder to IPFS using blockfrost. able to upload a file using the following, but not able to upload a folder curl "https://ipfs.blockfrost.io/api/v0/ipfs/add" \ -X POST \ -H "project_id: $PROJECT_ID" \ -F "file=@./README.md" here…
Adharsh Chottu
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Problem running Plutus Playground Client on MacOS

I am encountering a problem when trying to run the Plutus Playground through Nix on MacOS. I tried using the last available tag v2021-12-20, but I am getting the following error when I try to run the Plutus Playground Client in…
Matt59
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Resize image downloads for IPFS assets in CloudFlare

I am writing a Swift iOS app that uses Blockfrost.io to download assets from the Cardano blockchain. The asset's images come in the format ipfs://QmSJPFVN..., which can be retrieved by using the URI in a CloudFlare URL, like this…
Grambo
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