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Questions tagged [decentralized-applications]

applications that run on a distributed computing system. Also known as dApps

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What number of confirmations is considered secure in Cardano?

There is k finalization param in Ouroboros, but it is absolutely non-practical. It takes around 36 hours AFAIU.
uhbif19's user avatar
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0 votes
1 answer
14 views

Any helpful resources to build with the Laravel framework and php?

There are good libraries for Javascript frameworks to build dApp like Meshjs, Lucid, etc. I'm new to PHP and the Laravel framework. Is it possible to integrate those JavaScript libraries, with the ...
Fayaz's user avatar
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1 answer
36 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, ...) ...
uhbif19's user avatar
  • 121
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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 ...
KryptoKing's user avatar
1 vote
1 answer
106 views

What alternatives to Eternl mobile wallet with dApp connectors do exist for Cardano?

I'm currently using Eternl on my mobile phone to connect to and use dApps. However, they only allow a select few dApps to be used within the wallet and on top of that charge a fee for using dApps like ...
eddex's user avatar
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1 answer
32 views

Is it possible to swap tokens in Cardano using a SDK?

I am looking for a SDK from any potential protocol that let me swap tokens, as you would do in Ethereum using Uniswap or SushiSwap. Is there such a thing in Cardano?
Falcon Stakepool's user avatar
0 votes
2 answers
99 views

Guarantee not dispensing native assets to a Franken address

As I understand it, a "mangled" address can be used to spoof ownership of a wallet who's stake address is NOT of a wallet controlled by the one doing the spoofing. Put another way: I can use ...
RelevantData's user avatar
0 votes
3 answers
203 views

Full stack dApp example/tutorial

Now that I am comfortable with Plutus, I want to build a full-stack dApp with frontend and wallet support, so users can interact with it easily. This auction dApp is a good example, but it does not ...
sinoTrinity's user avatar
2 votes
1 answer
96 views

Call Martify Smart contract by cardano-cli

I call the martify smart contract by cardano-cli but I've seen the error Command failed: transaction build Error: The following scripts have execution failures: the script for transaction input 1 (in ...
user7854's user avatar
2 votes
1 answer
273 views

Creating a connect wallet button like JPEG.store

I am creating a React app and I want to integrate a connect wallet button that can then return the users wallet address, similar to JPEG.store. What is the best way to approach this. I tried using ...
Franklin McMillan's user avatar
1 vote
0 answers
31 views

How to profile the budget usage of Plutus scripts

How to profile the budget usage of Plutus scripts https://plutus.readthedocs.io/en/latest/howtos/profiling-scripts.html?highlight=profiling Im struggling trying to follow the steps indicated in the ...
Manu Padilla's user avatar
2 votes
0 answers
31 views

Haskell advices for optimize and reduce Plutus Script size and cpu and ram usage

I'm wondering in all the works-around to optimize and reduce the size of the scripts and resources utilization. I'm working in a big project and I'm struggling with this runtime limitations. I would ...
Manu Padilla's user avatar
1 vote
1 answer
67 views

How does valuePaidTo work?

How does valuePaidTo work ? Does it give the value paid by the script to the pubkeyhash or is it the total value of the pubkeyhash for the pending transactions ? Consider the following TxOut txOutputs ...
munx's user avatar
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1 vote
1 answer
100 views

How to test the serialisation of a transaction?

When using the Cardano serialisation library by emurgo, how do you test the output works as intended? Would this change when using parameterised contracts?
KryptoKing's user avatar
1 vote
2 answers
85 views

Starting to learn development on Cardano blockchain platform

I am Wim. I want to develop dapps on the Cardano blockchain platform. I have a little bit of programming experience in Java. So i think i will start from scratch to learn Cardano and the development ...
Wim81's user avatar
  • 13
1 vote
1 answer
192 views

Connect Unity 3D game with cardano

I am creating a play to game in Unity 3D. What is the best way to authenticate wallet of the users and send cardano native tokens.
Tahzeeb's user avatar
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1 vote
1 answer
286 views

Dapp connection with mobile browser

How do I connect my cardano website (dapp) with cardano mobile wallet. currently, I am using yoroi-frontend for desktop browsers.
Tahzeeb's user avatar
  • 23
0 votes
1 answer
78 views

Cardano dapp user authentication based on the wallet address

What are the best options to add user-authentication system based on the wallet address for my website? Thanks
Tahzeeb's user avatar
  • 23
1 vote
2 answers
93 views

How to embed smart contract in website

I am creating a dapp website and which will reward it's users on completing different tasks. I have to create cardano native tokens. My question is that how can I send, lock and burn native tokens ...
tahzeeb sattar's user avatar
8 votes
5 answers
286 views

Possible DApp infrastructure on Cardano. Interaction with users' wallets

I'm trying to build a possible DApp infrastructure on Cardano in my head. We should write the validation script in Haskell. Also as I understand, it is suggested to use Haskell for the off-chain code ...
Angelina's user avatar
  • 315
0 votes
1 answer
55 views

Question - is there a simple example end-to-end dApp on Cardano

as the title says... is there any example of a simple application built on cardano? I tried to find one but apparently there is none. I want to start learning by interacting directly through code and ...
Murphy's user avatar
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0 votes
2 answers
126 views

How can I establish the communication between my Flutter App and Cardano Blockchain?

Did anybody succeed with building a Flutter App that can communicate with the Cardano Blockchain? I would be happy if I could get some more guidance. I'm trying to build a cross-platform Dapp, so I do ...
Dani_Rango's user avatar
2 votes
1 answer
109 views

How does a Cardano DApp client authorize a payment?

Am I correct in thinking that this requires a DApp connector on the same device as the User's wallet? Or could you have an app on the user's device that doesn't connect to their wallet, but somehow ...
marcel_g's user avatar
  • 239
0 votes
1 answer
69 views

How do you populate NFT (images) in-game?

Sushibyte (and other game projects) has users input their wallet and then populates specific NFT's as playable images. Could someone walk me through the logic that verifies the desired policy ID and ...
BertoForThePeople's user avatar
6 votes
1 answer
92 views

Where can I find a good tutorial for PAB?

Up till now, I can't find any tutorial on how to use PAB on the Internet. I really want to try it out to develop Cardano Dapp. Anybody find good ones?
Tam Edward's user avatar
2 votes
0 answers
31 views

How to reuse data when updating Token using StateMachine

I'm currently creating a social network-like Dapp on plutus, and I've come across something I don't understand. My Dapp, for example, is NFT(for own identity)->RFT(for sell own content)->NFT(for ...
user avatar
1 vote
2 answers
204 views

Dapp connector for cardano-cli wallets

I've read about the Yoroi dapp connector, but is there a way to connect a wallet which was created with cardano-cli to some dapp?
Matt's user avatar
  • 218
4 votes
1 answer
175 views

What kind of dapps can scale using hydra?

I've been reading through the paper on the hydra protocol and seems to have a lot of nice properties. However, what isn't directly clear from the paper is in what kinds of dApps hydra could help scale....
Frank Weslien's user avatar
3 votes
1 answer
147 views

Can you create a DAO on cardano using only native tokens or would it require a sidechain?

I am researching creating a community-driven dapp with tokenomics similar to steem. Can someone point me in the right direction regarding implementation on the cardano ecosystem? I can not find a lot ...
Nick Massie's user avatar
8 votes
2 answers
506 views

I am completely new to Cardano eco system. To learn it from the absolute basic, where do I start?

This is a broad question but I am sure many might have this in their mind. I am an upcoming blockchain engineer and my exposure to Cardano eco system is limited to buying the ADA cryptocurrency and ...
Goodguy Charlie's user avatar
4 votes
1 answer
253 views

How to connect wallet with my dapps using yoroi dapp connector.?

I am trying to connect my users to my NFT Trading card game with yoroi. Can you provide me with an metamask equivalent for cardano
Dawar Ejaz's user avatar
3 votes
3 answers
161 views

How to validate someone delegates to your stakepool, while preserving their privacy?

Say you had a "stake pool paywall" for your website, where you offer your content, but only to those who delegate to your stake pool. What's the best way to validate someone has delegated to ...
TheStophe's user avatar
  • 400
2 votes
1 answer
126 views

What should I do with a validator which exceeds the maximum size?

In the recent months, I've been working on a conflicts resolution project and was starting to write the Plutus script. The problem is that, because of the complexity required, the script ended up ...
Mateus's user avatar
  • 988
2 votes
1 answer
400 views

How to create a programmable NFT?

Is it possible to create a gif or video NFT? For example, every time the user clicks on the image, an animation plays once or on repeat over the image. I do not see any guides on this and would ...
KronosXekri's user avatar
8 votes
4 answers
372 views

What are the best solutions for randomness in Cardano?

I would like to create a gambling Dapp and for this I need a provably fair RNG. What are the best solutions for provably fair randomness in Cardano Will Cardano add Chainlink VRF in the future?
Hanno's user avatar
  • 81
2 votes
2 answers
76 views

What is the point of borrowing on Defi

In order to take out a loan on a Dapp you have to come with collateral. Whatever you cannot pay back on the loan, you lose that amount in collateral and the interest accrued. That being the case what ...
Noah's user avatar
  • 113
2 votes
1 answer
64 views

Hypothetically, could someone other than the Cardano Foundation or IO publish an application back end first?

The Plutus Application Backend remains to be published. Could someone else put one up first? What would happen?
Wavey Davey's user avatar
4 votes
2 answers
235 views

Decentralizing an entire website with Cardano?

Is it currently possible to decentralize an entire application using Cardano (with the help of other decentralized services)? Coming from the viewpoint of a traditional Web 2.0 background, what are ...
Matt Halloran's user avatar
4 votes
1 answer
246 views

Making Dapps with Flutter

I have not used Plutus yet, but I’m in the pioneer program and will start soon. I am wondering if you can integrate the smart contract code with Flutter as a front end?
Thy Law's user avatar
  • 41
3 votes
1 answer
1k views

What is the purpose of the Yoroi connector for dapps integration?

Based on my understanding of Cardano I would guess that the connector will serve much the same purpose at MetaMask. To allow Cardano dapps to connect with and use the funds in your Yoroi wallet. Is my ...
Keith Wolters's user avatar
10 votes
2 answers
608 views

How does DApp front-end integrate with user wallets?

I'm familiar with using the Plutus Playground and Plutus TraceEmulator library to configure the wallet actions for the endpoints of a smart contract. These simulators are great for testing the smart ...
Kurt Hartmann's user avatar
7 votes
3 answers
285 views

Where can I find Cardano Dapp code and demo examples?

I am checking Cardano documentation to develop Cardano POC for my Dapp, found some good examples to create contracts using online application i.e. Plutus (https://playground.plutus.iohkdev.io/). ...
Ashish Singla's user avatar
0 votes
2 answers
103 views

is it possible to build a cardano multicurrency dApp wallet? [closed]

Will there be a cardano dapp built for multicurrency wallet, like Exodus and Guarda, that's desktop based, but built on cardano?
nin-j's user avatar
  • 1
8 votes
1 answer
278 views

How will dapps handle cardano inflation from staking rewards?

Let's say I would like to lock up some ADA in a smart contract for about 3 months. How will this compete with ~5% APR from staking rewards? Do all dApps need to provide a minimum ~5% APR just to keep ...
CosmicCat's user avatar
  • 408
13 votes
1 answer
136 views

Plutus Contracts Delegation

Is there or will there be such a thing where delegators can stake to a smart contract itself, rather than a pool?
KIJIRI's user avatar
  • 687
11 votes
3 answers
1k views

Are there web3.js-like in Cardano?

With the Cardano's Alonzo Hard fork coming, the Cardano testnet will be coming in. I assumed that there is a frontend library for interacting with the Cardano testnet, however I couldn't find anywhere....
iRaySpace's user avatar
  • 161
20 votes
2 answers
259 views

What advantages does Cardano have over other "fast" blockchains?

I'm a developer looking into starting my first dApp project. I've been waiting for Cardano to release smart contracts due to Ethereum's insane gas fees and low transaction throughput. I recently ...
Alexander Sung's user avatar
10 votes
3 answers
353 views

How will DApps work on Cardano?

This may been too broad of a question but I was hoping to ask a few specific questions here rather than over multiple questions. I don't think DApps are available yet but I'm sure people have started ...
Cavenfish's user avatar
  • 526