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18 votes
2 answers
356 views

How can smart contracts interact each other?

If the "context" of a smart contract can see only the transaction where it sits and its inputs-outputs, how can a smart contract interact with other smart contracts living in different ...
Aron Neewart's user avatar
15 votes
4 answers
1k views

On-chain and off-chain for Plutus SCs

Hi I am currently at lecture 5 of the Plutus Pioneers Programm and I was wondering which part of the code is on chain and which is offchain. I know that the valididation script is onchain but the ...
Pierre Previsionz's user avatar
15 votes
3 answers
699 views

What's the difference between "on-chain" and "off-chain" in plutus smart contracts?

Smart contracts written in Plutus can be divided in two: an on-chain part and an off-chain part. What's the main difference between these two?
Aron Neewart's user avatar
13 votes
2 answers
994 views

Where does a smart contract exist, in EUTxO?

In particular, I want to know whether the smart contract is somehow its own entity in the blockchain, or if a smart contract is just a property that EUTxOs may pick up. EUTxOs are bound by smart ...
Matthew Capps's user avatar
13 votes
6 answers
2k views

The Concurrency Issue

Are there any solutions to the concurrency issue so far without sacrificing decentralization? MinSwap testnet was experiencing this last night and just looking for some clarification, haven't seen ...
anonymous's user avatar
  • 211
13 votes
2 answers
556 views

Where is the on-chain code actually stored?

I've just read something that suggests Validators aren't actually kept on the blockchain. To save the space, only the hash of the Validator is kept at the UTxO and users willing to spend it must ...
emesik's user avatar
  • 816
10 votes
3 answers
349 views

How to properly start a new Plutus project, from scratch

I'm from ETH's ecosystem and recently just decided to get into Cardano development, specifically Plutus dev work thanks to Demeter.Run, and after going through the Plutus starters on there, I noticed ...
0xDaito's user avatar
  • 101
10 votes
2 answers
223 views

How can I write unit tests for Plutus contracts?

I'm a member of Plutus Pioneer Program. I already know about the Plutus Playground and like it very much. However, clicking all the blockchain action scenarios each time is very time-consuming, ...
emesik's user avatar
  • 816
9 votes
3 answers
355 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
  • 496
8 votes
2 answers
655 views

Is there a good tutorial to mint Cardano NFT using plutus script?

I used to mint Cardano NFT using "Time locking" following this guide https://developers.cardano.org/docs/native-tokens/minting-nfts/. But I know the more formal way is to use plutus script ...
Tam Edward's user avatar
7 votes
2 answers
166 views

Referencing onchain contract as 3rd party

In solidity and EVM, it is possible to reference external contracts by providing the address and interface to the contract: address ckAddress = 0x06012c8cf97BEaD5deAe237070F9587f8E7A266d; ...
Alan Saw's user avatar
  • 141
7 votes
2 answers
142 views

Why Strict Evaluation Operator "!" used in record definition implemented in Plutus Core?

While declaring records for use in Plutus strict operator is used like this: data Auction = Auction { aSeller :: !PubKeyHash , aDeadline :: !Slot , aMinBid :: !Integer , aCurrency :: !...
raghu's user avatar
  • 1,764
7 votes
2 answers
234 views

on multiple eUTxO and the validation proces

I have an in-depth question that needs good knowledge of the ledger rules. I was thinking about how to program efficiently and design apps such that they are parallelizable, a good practice for ...
Fermat's user avatar
  • 1,872
7 votes
1 answer
101 views

Cardano-Ethereum Bridge

What is the best way to write a smart contract that will work across both Cardano and Ethereum? It doesn't have to be released yet but preferably something that will be usable by the end of the year. ...
Eddy Schauman-Haigh's user avatar
7 votes
1 answer
287 views

Questioning Plutus API design decision

In Lecture 10 from the Plutus Pioneer Programm there is a replica of the Uniswap Smart Contract built on top of Plutus. It is actually part of the standard Plutus use cases Plutus Uniswap To have a ...
Marco Jakob's user avatar

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