Questions tagged [smart-contracts]

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Subscribing/retrieving data from large bigmaps

I am new tezos and was wondering if there is an existing stable and maintained tool that allows subscribing to and/or retrieving large amounts of data from smart contract big maps? I just want to ...
jed's user avatar
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13 views

Sending simple data in smart contract call

I want to make a simple payment receiver contract not using default the entrypoint that also just sends a plain text message. Is there a way to just send a simple message within the input data that ...
Ben's user avatar
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2 answers
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I want to transfer the tokens from one contract to another address

When I transfer the token from the contract address: KT1LkNWZgVYh3zdaRkBb9aNgLEFCjVJwEKu2, it works well. However, when I switch back to the address KT1P8RdJ5MfHMK5phKJ5JsfNfask5v2b2NQS, an issue ...
Solider's user avatar
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3 answers
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I want to retrieve the balance of a smart contract that I own using my wallet address and the address of that smart contract, how can I do that?

I have a contract address: KT1P8RdJ5MfHMK5phKJ5JsfNfask5v2b2NQS, and a wallet address: tz1MSint56iUqoogrKsvEMEykpbKv2Yhmzss. What can I do?
Solider's user avatar
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1 answer
36 views

Patching a contract with deprecated instructions

The following contract (Hic Et Nunc Marketplace V1) contains the deprecated instruction SUB on type mutez: https://github.com/hicetnunc2000/objkt-swap/blob/master/michelson/objkt_swap_v1.tz I want to ...
mathematicsenthusiast's user avatar
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2 answers
57 views

Error: TezosOperationError: (branch) proto.017-PtNairob.contract.empty_transaction

So, i'm doing the royalties function for my NFT Marketplace. My idea was to make a big map with the royalties (user and amount) for each new token created, and it's working fine. My problem is when i'...
borderlessdev's user avatar
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1 answer
25 views

How to access contract metadata from another contract?

I'm building a NFT Marketplace. I already set the mint function (with editions), list and buy function. Now i'm trying to build the auctions functions. On Smartpy, i created the Marketplace class, and ...
borderlessdev's user avatar
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1 answer
22 views

Two contract interactions same time?

So, i want to list my NFT, so, i update operators and then update my metadata. The problem is i need to accept two times, one to update operators, other to update (list) in metadata. Is that a way to ...
Guilherme Cousseau's user avatar
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2 answers
40 views

Error: Uncaught (in promise) TezosOperationError: (temporary) proto.017-PtNairob.tez.subtraction_underflow

Error: Uncaught (in promise) TezosOperationError: (temporary) proto.017-PtNairob.tez.subtraction_underflow I know this error is caused by a subtraction resulting in a negative number, but i'm just ...
Guilherme Cousseau's user avatar
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1 answer
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How to set Total Supply on TzKT?

I'm trying to create multi-edition items. My idea was to make a list of each token and then each token edition with the owner. Ok, i create the item and shows like that on blockchain: https://api....
borderlessdev's user avatar
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1 answer
44 views

Error: Error in Scenario / Assertion failed

I am doing a contract to Mint Nfts on Tezos on Legacy SmartPY ide (because Tezos tutorial uses it). I already created Nfts but only in single edition, now i'm trying to do a Multi-edition, but the IDE ...
borderlessdev's user avatar
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1 answer
41 views

deprecated_instruction error upon contract deployment

I'm attempting to clone some contracts that are available on mainnet and deploy them to Ghostnet. When trying to deploy the Hic et Nunc Marketplace (https://tzstats.com/...
mathematicsenthusiast's user avatar
2 votes
1 answer
73 views

Error 32603 Metamask to deploy an ERC20 on the EVM rollup

Hi I am trying to deploy an ERC20 on the EVM rollup I am copying this code for ERC20 and using the Remix IDE When I use the "Remix VM (shanghai)", it works fine However, when I switch to &...
greeneye12's user avatar
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1 answer
16 views

sp.contract can get only explicit string as an entrypoint

I'm trying to call another contract from mine. It seems like I can't feed sp.contract with an entrypoint string that comes from an argument (it works perfectly fine with an explicit string like "...
PinkD's user avatar
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2 answers
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Url error in smartpy

I trying to write a smart contract on the tezos network and using import FA2 library for this. But when I try to run the code I face the url error. this is my code : import smartpy as sp FA2 = sp.io....
AMS SAL's user avatar
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1 answer
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Issue while generating NFT metadata

I have a problem for the generation of my metadata: https://ghostnet.tzkt.io/KT19FWtPSqybX52WaLVAD3xbWyHiRqNupD9Q/tokens/14/metadata This is how I generate my metadata in my code: const metadata = ...
TM Paolo's user avatar
1 vote
2 answers
66 views

Creation of a FA2 Token (Fungible) and not an NFT

I created a smart contract to do several interactions with tokens. With the tutorial on the tezos website: https://tezos.com/developers/tutorials/nft-markeplace Here is my smart contract: https://...
TM Paolo's user avatar
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1 answer
35 views

The operation cannot be added because the mempool already contains a conflicting operation that should not be replaced

I am getting below issue while deploying SmartPy contract in ghostnet. HttpResponse: Http error response: (500) [ { "kind":"temporary", "id":"...
theBatMan's user avatar
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1 answer
19 views

Buy NFT with fee for the marketplace

I want when a user buys an nft, 90% of the amount goes to the author and 10% to the marketplace. When I deploy my smart contract everything works fine: https://legacy.smartpy.io/ide?cid=...
TM Paolo's user avatar
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1 answer
21 views

Integrate a url in an NFT during the mint

I would like to add the possibility when I mint an NFT to integrate a "URL" in the parameters of the NFT. For this I tried to modify my mint function in my smart contract like this: @sp....
TM Paolo's user avatar
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1 answer
9 views

How to calculate shares in Quipuswap V2 dex?

In quipuswap dex v2, when we call invest_liquidity, there is parameter called shares. I want to know how to calculate those shares. I know that there is view in contract called get_toks_per_share but ...
user avatar
1 vote
1 answer
41 views

How to transfer an NFT

I'm trying to transfer an NFT, that I just minted to someone without them paying for it (just like an exchange). Here is the function I created on smartpy: @sp.entry_point def transferTest(self, ...
TM Paolo's user avatar
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1 answer
52 views

NFT transfer functionality with Smart Contract

I created a smart contract thanks to the documentation on tezos: https://tezos.com/developers/tutorials/nft-markeplace I wanted to be able to test the transfer functionality of nft between users or ...
TM Paolo's user avatar
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1 answer
46 views

Problem for creating smart contract NFT marketplace

I am trying to make an NFT Marketplace using the tutorials given here: https://tezos.com/developers/tutorials/nft-markeplace The first problem I had was when they give us the smartcontract, the ...
TM Paolo's user avatar
0 votes
2 answers
36 views

Contract compile error in Dapp tutorial (wine collection marketplace)

I'm trying to run through this tutorial on dapp development with ligo (https://tezos.com/developers/tutorials/nft-ligo-marketplace/) and am running into an error. In the "NFT Marketplace Contract&...
habitable_planet's user avatar
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0 answers
11 views

How to migrate storage from one contract to another?

Can we migrate storage from one contract to another,if we get any issue in first contract?
theBatMan's user avatar
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1 answer
42 views

calling a FA2 smart contract transfer entrypoint from my contract in smartpy

Hello guys I am trying to call from my contract entry point from FA2 token contract that I have deployed. But I am unable to find anything on the internet. The only thing I found from the ...
Rukundo Aimé's user avatar
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1 answer
26 views

How to compile a LigoLang jsLigo written smart contract on Windows + vsCode?

I'm beginning to learn to write Tezos smart contracts with LigoLang using jsLigo as programming language and Windows as operating system. For IDE I'm using vsCode. I've followed the Getting Started ...
Luiz Milfont's user avatar
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0 answers
29 views

Unable to interact with other contracts because Tezos.get_contract_opt got None

I tried to interact with other contracts but failed because Tezos.get_contract_opt always returns None. Here's the demo code (ligo v0.60.0): receiver.jsligo - A contract that the "broadcaster&...
caaatisgood's user avatar
0 votes
2 answers
67 views

CORS error with completium-cli sandbox

I'm trying to access a contract on the completium-cli sandbox within my dapp running on a local vite server. Ideally I would set up my dev environment so I can test deploy to the sandbox within the ...
Grum's user avatar
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1 answer
26 views

Trying to give a custom metadata but still it is using the default base metadata mentioned in class Common

Hello I am using the template Fa2NFT library. When we add the compilation target we need to give it a metadata parameter. I am trying to give it a custom metadata but still it is using the default ...
user avatar
0 votes
1 answer
49 views

call another contract onchain view

first we deploy fa2 contract from a contract like this deployed_fa2 = sp.create_contract_operation(contract=FA2_contract.SingleAssetToken(admin=sp.self_address, metadata=metadata,token_metadata=...
Sandip Bhujel's user avatar
0 votes
1 answer
12 views

Is there a way to convert from Big_map to map?

Is there a way to convert from Big_map to map ? (Use case : send the storage to another contract that need to parse it)
user avatar
0 votes
2 answers
11 views

What to use instead of try catch?

I have a requirement, there are two contracts Contract A and Contract B. Contract A calls Contract B , if some error occurs in contract B while calling. Instead of failing of transaction, Contract B ...
user avatar
1 vote
3 answers
44 views

How do you generate your initial storage for deployment in ligo?

I'm curious about your strategies regarding the following questions: How do you generate your initial storage for deployment ? Where do you store your storage types ? Do you keep your storage ...
user avatar
0 votes
0 answers
59 views

Need help on translating code to convert packed address to string

There is a code on this link (https://tezos.stackexchange.com/a/5908/8795) that decodes a packed address using code that is taken from PyTezos . I am trying to achieve the same using smartpy inside a ...
Kin's user avatar
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1 vote
1 answer
36 views

Do we have allowance() method like solidity in smartpy?

I need to implement allowance() function of Solidity, how can we achieve it in SmartPy?
theBatMan's user avatar
0 votes
1 answer
63 views

How to get XTZ balance of a address?

I want to read available tezos balance of a given address. How do we achieve this in smartpy? Also do we have allowance() method like solidity in smartpy?
theBatMan's user avatar
0 votes
1 answer
64 views

Calculation complex mathematical expressions in smartpy like ln, log, etc

I want to calculate complex mathematical expressions such as ln(94) in smartpy. How can this be done?
Sanket Nighot's user avatar
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2 answers
71 views

TezosOperationError: (permanent) proto.016-PtMumbai.michelson_v1.bad_stack

I am getting following issues: compilation warning: [warning] Error in generated Michelson contract: previous error deployment error: "TezosOperationError: (permanent) proto.016-PtMumbai....
theBatMan's user avatar
-1 votes
2 answers
24 views

sp.if: cannot unify branches

I am getting "sp.if: cannot unify branches" error from a onchain view method. Below is the code snippet. Full error msg: [error] Type Error sp.TRecord( locked_balance = sp.TNat, ...
theBatMan's user avatar
1 vote
1 answer
38 views

RLP related question

I am trying to translate solidity code in smartpy . bytes memory rlpBytes; rlpBytes = abi.encodePacked(rlpBytes, _link.encodeString()); rlpBytes = abi.encodePacked( rlpBytes.length.addLength(false), ...
lee brune's user avatar
1 vote
1 answer
58 views

Writing SmartPy tests along with LIGO contracts

I have a set of smart contracts coded in SmartPy. They are heavily interdependent and some of them also interact with cTez contracts. I need to write SmartPy tests to check if everything is working ...
Ojuswi Rastogi's user avatar
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1 answer
44 views

Error when deploying: proto.016-PtMumbai.michelson_v1.bad_stack

TezosOperationError: (permanent) proto.016-PtMumbai.michelson_v1.bad_stack Now getting this issue while deploying contract on ghostnet, whats the reason for this?
user avatar
1 vote
1 answer
30 views

Examples of deploying a smart contract on a tezos sandbox with python/pytezos

I've been looking for up to date examples of deploying a smart contract on a tezos sandbox for a while now. Does anyone know of any good references? I'm using python/pytezos.
user avatar
0 votes
1 answer
85 views

Concat Address to String in smartpy

My use case is, I need to concat address with string this way, "ab" + sp.self_address + "cd" . How to achieve this in smartpy ?
lee brune's user avatar
1 vote
1 answer
59 views

Rollup Q&A: How can arbitrum or optimism update their rollup with an admin key? I thought Smart Contract were immutable?

Question from reddit How can Arbitrum or Optimism update their rollup with an admin key? I thought SC were immutable?
greeneye12's user avatar
1 vote
1 answer
268 views

Rollup Q&A: Why are Tezos "enshrined" rollup better than Ethereum smart contract rollup?

[Question coming from reddit] What makes the tezos rollups "enshrined" as compared to smart contract ETH rollups? Is it because the rollups have special treatment by the L1: specific sr ...
greeneye12's user avatar
0 votes
1 answer
23 views

Missing item in map error

I have defined a map and in a entry point i try to verify if the value of a key exists or not. I am getting error : Missing item in map: 'param' is not in {} while evaluating self.data.links[params]. ...
theBatMan's user avatar
0 votes
1 answer
39 views

How to implement try & catch in smaryPy?

How do we implement following solidity code in smartPy. try this.checkAddress(to) { sendResponseMessage( Types.ServiceType.REPONSE_HANDLE_SERVICE, ...
theBatMan's user avatar

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