Questions tagged [contract]
The contract tag has no usage guidance.
55
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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 "...
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15
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Different outcomes from different nodes when executing contract origination transactions
I have came across an interesting scenario when I was using PyTezos to originate a contract. By using different nodes, I got different errors/acceptance. I have tried the following nodes:
SmartPy ...
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42
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General Information
I know tezos strongly believes in immutability but I would like to clear out some curiosity regarding upgradability of a contract.
If a function in a contract needs to be updated with it's logic , ...
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Is it possible to use an existing contracts storage as the seed data for a new contract that has the same storage schema?
Can you deploy a new copy of a contract with SmartPy and simultaneously copy the storage of an already existing contract that has an identical model into the freshly deployed contract?
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Can off-chain views call on-chain views?
Is it possible to call and process the result of an on-chain view inside an off-chain view that is stored inside contract metadata?
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What are the recommended regular expressions for tezos wallet and contract addresses?
I need to validate Tezos addresses and have arrived at the following prefixed base 58 regular expressions for wallet and contract addresses.
Contract:
/KT1[1-9A-HJ-NP-Za-km-z]{33}/
Wallet:
/tz[1-3][1-...
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53
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How do you submit a pair when calling an entrypoint on a contract with Taquito?
I am trying to submit a Pair of Bytes in a contract call with Taquito but am receiving an error.
The contract interaction documentation does not go into exactly how to submit a Pair, but it does go ...
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1
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214
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How to get wallet tokens balance with the help of address and tokens contracts?
I have a wallet address and token contracts
For example:
wallet address: tz1MmduNCzoKU9GHngwLqC8TmExTHQXJCSTn
and Tokens contracts:
Plenty: KT1GRSvLoikDsXujKgZPsGLX8k8VvR2Tq95b
Quipu: ...
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63
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Why does calling sp.address() with a dynamic value inside an entrypoint fail?
Is there some way to call sp.address inside an entrypoint and pass in a dynamic String?
I have created an example contract showing the failing state:
import smartpy as sp
class ...
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1
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37
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List inside of Map, or equivalent?
I want to have a list of data in a map so I can find it with the key which is associated with a user, but I get:
Error: Type Error sp.TIntOrNat is not sp.TList(sp.TUnknown()) bad type
for map value (...
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1
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50
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How to check amount sent with transaction (like msg.value>6 in ethereum)
How do I check inside a contract entrypoint, that the user sent a particular amount with the transaction? In Frontend:
const operation = await contractInstance.methods.methodName().send({amount:12});
...
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46
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how does the liquidity baking CPMM round up or down?
I'm not sure how to ask this and I may mess up my mathematical terms, if you think I have then please correct me.
When I call addLiquidity on the CPMM, I know that I will be sending tez, and that ...
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1
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54
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how to calculate current storage values for liquidity baking CPMM
In looking at the storage values of the CPMM one can see that as of right now the CPMM has the following amounts of tzBTC (represented by the contract as tokenPool), xtz (represented as xtzPool), and ...
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130
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call to 'approve' entrypoint of tzBTC contract failing with 'UnsafeAllowanceChange'
I'm trying to call addLiquidity on the Liquidity Baking CPMM. I've already called xtzToToken on the CPMM and given my address tzBTC. I can see that my address has tokens on the tzBTC contract when I ...
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67
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what's a sensible minLqtMinted to send to the Liquidity Baking CPMM when calling addLiquidity?
I'm trying to understand what a sensible value is for the liquidity token (LQT) parameter when calling the Liquidity Baking CPMM.
I'm reading the Dexter docs here, since the CPMM is a fork of the ...
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79
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value is invalid for type
I'm trying to call the addLiquidity entrypoint of this contract, which is a copy of the Liquidity Baking CPMM contract, which is itself a copy of the Dexter contract.
The original Dexter docs give an ...
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1
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103
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Can't get tzBTC out of the tzBTC Granadanet contract
i'm trying to (eventually) add liquidity to the Liquidity Baking CPMM contract on Granadanet. In order to add liquidity, I need some tzBTC from the tzBTC contract here.. I cannot, for the life of me, ...
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115
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Contract does not exist
I'm using a Granadanet node to experiment with Liquidity Baking. I'm trying to call the tzBTC contract's mint entry point.
This is my first time using a test net, but I thought that it was a copy of ...
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1
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562
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How to store and load custom FA2 NFT metadata?
First time I'm writing a smart contract. If anything doesn't make sense at all, feel free to call out what specifically doesn't make sense and suggest a better approach. Thanks!
At a high level I just ...
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116
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What is the one-time 0.257 tz burn fee?
I have deployed a contract on a test net and I want to send some tez to it to test out some operations. When I try to send through Temple wallet, I get:
Failed
Unable to estimate transaction to ...
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1
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213
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Smartpy transfer contract balance to an address
I'm trying to figure out how to withdraw money from the contract within a smartpy entrypoint, and test the result in my scenario.
When I test the entrypoint:
@sp.entry_point
def withdraw(self, ...
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2
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1
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57
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Interact with Tezos in xamarin
im searching for a way to communicate to the chain in my xamarin app. The problem is that the native libs like this https://github.com/mscappini/Tz.Net are not really well looked after so im searching ...
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37
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How to format storage for a contract call with parameters?
I am trying to construct the storage needed to do an on chain contract call but I'm having trouble passing in the parameters. What is making it tricky is that one of the parameters is of type ...
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34
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How can I manually create an on chain contract call?
Using tezos sandbox mode, I am trying to test an on chain contract call in isolation of the main contract which calls it. If my contract was the Collatz template, it would like be trying to run the ...
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2
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123
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How can I write On Chain Contract Calls in Tezos Sandbox?
I am trying to write a test case in Tezos Sandbox that uses an On Chain Contract Call. To start with, I am trying to implement the example from SmartPy "On Chain Contract Calls - Collatz" ...
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93
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FA2 from/to serialization
In the FA2.0 standard the sender and receiver is send as Bytes (vs. send as string for FA1.2).
Expected result: When decoding the addresses (string) to their public key hash representation I would ...
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0
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48
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How to set `contract` as input argument
I have a method Token_metadata_registry which takes contract(address) as input parameter and I would like to call that method from ligo dry-run. How do I do that?
ligo dry-run contracts/main/fa2.ligo ...
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73
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Michelson: Parameter vs Storage
I'm struggling to process what the difference between parameter and storage is in Michelson. From what I've been reading, it just looks like two different types of inputs to a contract. So how should ...
user5177
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The revealed key of a contract in Michelson
Checking signatures requires keys. Currently, keys must be always given from the outside of Michelson.
Is there any reason why Michelson cannot obtain the already revealed keys of given contracts/...
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76
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My contract compiles, but when deploying I get an error
I'm using the Teztool in sandbox mode. My contract compiles, but when I deploy:
teztool carthagenet sandbox client originate contract tezart transferring 0 from bootstrap1 running tezart.tz
I get ...
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167
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Contract originate hangs after 'Waiting for the node to be bootstrapped before injection...'
I'm using babylonnet.sh script to run docker.
My contract compiles. I output to a 'contract.txt' file.
Command is:
./babylonnet.sh client originate contract tezart transferring 0 from ...
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What are the differences between key, key_hash, address, contract and signature in Michelson?
There is a related question, but the differences are still not clear. These five types are mentioned in the Michelson whitedoc with the following definitions:
address: An untyped address (implicit ...
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92
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Genesis Balances
I found out that the genesis balances of each account are present in https://tezos.foundation/wp-content/uploads/2018/09/5223213-genesis.txt .
Couple of Questions:
1) I see Bootstrap Contracts have ...
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60
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Tezos - Liquidity deploy contract error
I got an error and I don't know how to handle.
I wrote a smart contract in liquidity and script check and so works well.
The command to deploy is:
liquidity --node http://192.168.1.150:7732 --...
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3
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132
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Originate contract with init
I have a contract of type:
pair (pair (list nat) (pair mutez (map address (list nat))))
(pair address (pair address bool))
What is an example of a valid initial storage that can be passed to ...
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60
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How to format the call to the "do" entry point on manager.tz contracts in order to transfer funds to account X"
I accidentally set the account manager for a smart contract to a baker I was trying to delegate to.
https://better-call.dev/main/KT1VSiaepk9USGAHDjJQAm4aaYRC6J8dTBHG/operations
Now I need to figure ...
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1
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284
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Delegating from a Kt1 address locked my coins, how can I fix it?
Might have royally messed up here, but I added an address via command line with
./tezos-client add address stakingfacilities tz1WpeqFaBG9Jm73Dmgqamy8eF8NWLz9JCoY
(for stakingfacilities baker in ...
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1
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61
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Drain delegated KT1 contract, then later send funds to the same (but now empty) contract
What happens in the following scenario?
A person sends all his funds from his KT1 contract* to his tz1 address
The person withdraws all the tez from his tz1 address (both now have a balance of 0 tez)
...
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0
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71
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How to deploy a contract to Tezos Mainnet?
I've searched a lot but it seems nothing works at this point
So I have a contract.liq source code. I also have up and running tezos-node. Basically the question is how to deploy contract.liq to the ...
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Why is my delegation+origination appearing in red?
I used SimpleStaking wallet to delegate 2599 tezos to TezosBC baker but it doesn't seem to be going through. I tried opening with TezBox wallet and it says the account is not on the blockchain yet ...
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759
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How to extract the storage of a smart contract?
How do I extract the storage data of a deployed smart contract? I am trying to read the storage data from the "free Ledger Nano S" contract KT1BRudFZEXLYANgmZTka1xCDN5nWTMWY7SZ from the Tezos ...
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36
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Updating a existing contract with new code and storage [duplicate]
Is it possible to update a existing deployed contract with new code & storage on the same address?
It would be like adding a new version or does the updated contract have to be deployed to a new ...
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80
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How to initialise a contract with storage (contract unit)
How do I initialise a contract with the following storage -
storage (contract unit);
Used after the command line parameter --init for contract deployment.
I have tried various formats but none of ...
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198
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Contracts - is events / logging going to be added?
The Ethereum Solidity contract system has a feature for adding events (logging) which can be subscribed via the RPC and also searched for (as the events are stored on the blockchain).
Is there going ...
3
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1
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108
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Contract - purpose of returned internal operations?
I keep seeing contract internal operations being returned empty (stack - 'NIL operation;') in the example Tezos Michelson contracts.
What is the purpose of the internal operations? Also, are there ...
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34
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Contract : opcodes FAILWITH / FAIL - gas usage
If a contract gets to the point where it fails. What is the process in terms of gas usage?
Storage gas (new storage until failure) : reverted
Gas usage (used until failure) : reverted
Gas fee : paid ...
3
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1
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42
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Michelson contract files - spaces, new lines and comments
I wanted to check that when a Michelson contract file is created. Do file spaces, new lines and comments increase the gas cost when deployed?
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88
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method for calling to entry point of contract instance (?) created by contract.create
Contract A is not able to find the address of the contract created by contract.create. Tried adding the signature of B as well as it's complete definition in contract A but still, it doesn't solve the ...
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What are the new rules for when a KT1 gets destroyed? Or when "--burn-cap" must be used to send funds to a tz1/tz2/tz3 account?
What are the new rules for when a KT1 gets destroyed? Is there a certain balance that it goes below?
What about tz1/tz2/tz3? I noticed that sometimes --burn-cap must be used to send funds. Why is ...
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Deploying a simple contract using liquidity
Contract (simple.liq):
[%%version 1.0]
type storage = int
let%init storage = 0
let%entry main (parameter : int) storage =
( [], storage + parameter )
Deployment command:
liquidity --tezos-node ...
