Questions tagged [script]
The script tag has no usage guidance.
43
questions
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1
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Unable to convert BuiltinString to JSON
I would like to include a BuiltinString in a datum but am unable to do so as BuiltinString has neither a FromJSON nor a ToJSON instance. Is there an alternative to implementing these instances by hand?...
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0
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1
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18
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How to create Policy Id using cardano serlization lib?
I was wondering how to create the policy Id/script for the cardano assets.
I am new to cardano blockchain but I have worked on Ethereum. I read the docs provided by the cardano officials but couldn't ...
- 1
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votes
1
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27
views
Whats the python script to check if an cardano address has a script flag?
I have a script to fetch asset name, address from a policy id with blockfrost API, now I need to see if the asset is in a smart contract script. I have no coding skills but followed a tutorial to get ...
- 3
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2
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28
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"The second data argument, does not decode to a context" when minting NFT with Mesh
This my script for minting NFT:
{-# INLINABLE mkPolicy #-}
mkPolicy :: BuiltinData -> PlutusV2.ScriptContext -> Bool
mkPolicy _ ctx = traceIfFalse "wrong amount minted" checkNFTAmount
...
2
votes
1
answer
33
views
Which address types are allowed for collateral inputs
Collateral inputs are required to be added to a transaction when any Plutus script is executed within that tx (i.e. spending a Plutus address utxo or minting a Plutus policy asset).
Obvious that a ...
0
votes
1
answer
45
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Workaround for Plutus Scripts that excesses the max Tx Size. Framework or examples for splitted or modular validators?
Im very interested in how you can split the validation in several validator.
There is any model or framework to follow?
Any example around?
Could somebody at least share some words of insights about ...
- 118
1
vote
3
answers
77
views
Is it possible to call the `mkValidator` inside the same / another `mkValidator` function for script composibility?
Supposed I have a validator below, checking only if the output value is locked by the same script.
{-# INLINEABLE mkValidator #-}
mkValidator :: TestingParam -> TestingDatum -> TestingRedeemer -&...
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1
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47
views
'No Corresponding Policy Script' Error when Script Was Provided
Following the Mintin NFTs IOHK tutorial I end up with the following error when crafting the transaction.
Command failed: transaction build Error: The "--mint" flag specifies an asset with a ...
- 127
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1
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89
views
What happens if I omit a datum hash in a transaction to a script address?
When using a Trezor to sign a transaction with a script address as the receiver, I get the message "The following transaction output contains a script address, but does not contain a datum. ...
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1
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60
views
How to store scripts using blockfrost?
Greeting!
I got that Blockfrost has API to get plutus script hash but how to store those scripts hashes?
P.S. if I got script hash, can I build and send transaction using script's hash and Blockfrost?
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47
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Is there a way to see which Plutus code is deployed on a specific script address?
On Ethereum, for example, there is a way to see the Solidity code that is deployed in a specific address (as long as the code gets verified).
Is there a way to achieve this same behaviour in Cardano?
- 908
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22
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How can I make a minting contract that never closes?
I am trying to change some old contracts to take advantage of the reference scripts coming whenever vasil comes out. How can I make a contract that will mint new coins upon activation, I'm talking ...
- 922
2
votes
2
answers
52
views
Whats Your Mental Model For Monads?
I was asked by a friend trying to learn plutus what a monad was, so I began talking about category theory. It seems that this confused him further how would you explain monads to a noob?
Whats your ...
- 922
1
vote
1
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52
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"'Inputs do not conform to this spec or are otherwise invalid.'" - extract balance from smart contract
I'm implementing a smart-contract in Plutus and I'm with a doubt. For example, Ethereum has some function only to owners, that enables to implement a withdraw of balance for only owner addresses.
I ...
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2
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1
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83
views
Plutus Script Validation Metadata
I have a question but I cannot find a concrete answer for that. I have a smart contract developed in Plutus for managing locking and withdraw of Tokens/NFTs. I'm wondering if I can validate some ...
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2
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1
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80
views
How to determine the order of transaction input (in the order of the TxIds)?
If I have the following transaction:
cardano-cli transaction build \
--tx-in dd3dbc1cbd4627da3b74fae8c7bcc3f05f3b41ec36feb33f81cf885390b634d6#0 \
--tx-in ...
- 439
0
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1
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502
views
How to Get Started with Cardano Native Script
What resources should you use to learn native script and in what order should you use them in?
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1
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49
views
How to achieve a minting policy script that locks after certain number of images (assets) have been minted on the fly
Let's say I want to run an NFT campaign, where the minting policy only allows minting of 100 NFTs (each one is different), and then the policy should lock.
If this minting policy were a Plutus script, ...
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1
vote
0
answers
67
views
Whats the Diffrance between Plutus scripts and Cardano Native Scripts?
What are the key differences between Cardano native scripts and Plutus scripts, from a developer's perspective?
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1
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1
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30
views
Script to only accept payments in 100 Ada
How do i create a simple script that users can deposit ada into but only 100 ada per transactions , nothing less than that and nothing more. The transaction will not go through if it is not 100 Ada.
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1
vote
2
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41
views
checkDeadline function always returning False
I am trying to make a minting policy that fails after a certain deadline.
I have tried something like this
{-# INLINABLE mkTokenPolicy #-}
mkTokenPolicy :: TxOutRef -> TokenName -> Integer -> ...
- 21
1
vote
0
answers
33
views
How to get the address which locked the fund on a smart contract?
I have two users. The first user locks 1 ADA with a Datum at a script address. The second one unlocks the 1 ADA with the same Datum and should now send 5 ADA to user one.
Can I now implement a logic ...
- 33
1
vote
1
answer
123
views
Script Witness Not Validating for Multisig
I'm getting the following error when trying to consume a UTxO sitting in a multisig script address:
[
{
"scriptWitnessNotValidating": [
"...
- 908
0
votes
2
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389
views
How to generate script address from plutus script cborhex
I want to generate the address from the plutus script's cborhex value, but so far without much luck. I am using the alwayssucceeds.plutus contract as an example for which the cborhex value is ...
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1
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2
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72
views
Plutus script execution at every end of epoch
I would like to develop a Plutus script that executes each time an epoch ends.
What's the best way to achieve this behaviour?
- 908
1
vote
1
answer
70
views
How to PlutusTx.compile work with multiple arguments to mkPolicy
I'm on homework 5 of the pioneer program. If I check Signed.hs:
{-# INLINABLE mkPolicy #-}
mkPolicy :: PaymentPubKeyHash -> () -> ScriptContext -> Bool
mkPolicy pkh () ctx = txSignedBy (...
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4
votes
3
answers
106
views
Discovering the script source based on address
How to find out what scripts / smart contracts are holding my assets and how could I recover these assets if the script allows?
I have in my transactions log a transfer of 500 ADA to this script ...
- 251
1
vote
2
answers
69
views
Contract deployment in week03 is failing with "beneficiary signature missing"
When running the grab.sh script the following error occurs:
./grab.sh
Command failed: transaction build Error: The following scripts have execution failures:
the script for transaction input 0 (in ...
- 31
6
votes
3
answers
698
views
Can ADA locked on a script be staked?
I am curious to know what happens to ADA when it gets locked to a script as far as staking goes. In other words, can ADA locked at a script address by staked?
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69
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script for automation sending tokens [closed]
i just finished my first script and would love to share some ideas and also to listen your opinion for additional development.
how the script works and what it does
create Log file :)
while (looping)
...
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1
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108
views
How to build a script transaction if the validator expects it to be signed
Given the following smart contract:
{-# INLINEABLE mkValidator #-}
mkValidator :: PubKeyHash -> BuiltinData -> ScriptContext -> Bool
mkValidator beneficiary _ ctx =
traceIfFalse "tx ...
- 191
2
votes
5
answers
367
views
How to obtain wallet addresses of stake pool delegators?
I am trying to figure out how to write some scripts that will dish out rewards to delegators on my staking pool - I want to get the wallet addresses of delegators, and determine rewards based on the ...
- 132
3
votes
1
answer
86
views
Verifiying a digital signature in a Plutus script
Is there a function like signedBy that I can call in a Plutus script to verify a digital signature?
- 45
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1
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269
views
How to split transaction into many different UTXOs?
Let's image I want to create a Plutus script, which takes Value as a parameter (ADA or any other coin with specific amount), and locks this value at script's output. How can I split this value into ...
- 168
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247
views
Hash script data
I want to understand a bit better the hash-script-data functionality from cardano-cli. I checked the source code but had no luck in understanding how this hash is made.
From the examples, if we run:
...
- 206
2
votes
3
answers
717
views
How to get Policy Script for a specific policy-ID
how can i get the script information for a given policyID. I am mostly interested in the "invalidAfter" Slot number.
So far i could not find any option for example by using Blockfrost API.
...
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4
votes
1
answer
162
views
Script unlock cannot submit, budget overspent
I'm trying to unlock some token at a script address, so I create a tx with cardano-cli transaction build ... this passes successfully, then I sign the tx. It is now ready for submit but when I submit ...
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3
votes
1
answer
43
views
nix-build alonzo mainnet
I've installed cardano-node via nix-build:
git clone https://github.com/input-output-hk/cardano-node
cd cardano-node
git checkout tags/1.29.0 -b 1_29_0
nix-build -A scripts.mainnet.node -o mainnet-...
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4
votes
2
answers
110
views
Transaction Notification
is there any tool that sends a notification when a incoming transaction happening on your wallet?
Or what is the best way to check it with a script
7
votes
1
answer
204
views
Convert Plutus Address Credential to real-net address
So in Plutus we have the Address type which has two constructors ScriptCredential which is a ValidatorHash or PubKeyCredential which is a PubKeyHash but all these are not encoded in the same way as ...
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2
votes
0
answers
116
views
Weird behavior on validation of outputs
So I have a validator that, in particular, checks how many outputs are produced.
os = txInfoOutputs info
mkValidator :: ...
mkValidator = traceIfFalse "Wrong outputs" checkOutput
where
...
- 329
6
votes
1
answer
133
views
Re-Implementing Policy Hashing in Python
As the title says, I want to to reimplement the hashing part of a policy script in Python 3.
I have already made a post over at forums.cardano.org, and someone has pointed me to the right direction of ...
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16
votes
5
answers
2k
views
What is a Redeemer?
So I am currently on lecture 1 on the Plutus Pioneer Program. In the lecture they said the redeemer is the input information that the script uses to decide if a specific UTxO can be spent. I watched a ...
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