Linked Questions

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0answers
23 views

Can contract use its own ethers as a gas when calling other contract? [duplicate]

Can rich contract (that holds some ethers) use them as a gas when it would like to call other contract? http://solidity.readthedocs.io/en/latest/control-structures.html gives an example of feed.info....
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2answers
49 views

Ho can a server act for third party?

I will try to explain my idea. Our server receive data to save from different servers, we call it S1, S2 and S3. Our server uses a node script with web3.js to call function over a contract. Actually ...
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1answer
21 views

can a gas comission be paid by the owner? [duplicate]

I want to create a token but, I want people to send the tokens without them paying for the gas, is there any command to do this
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1answer
25 views

An automatically gas payment [duplicate]

I’m a noob in smart contract development so I have a question. Is it possible to make that the smart contract itself can pay gas needed for executing? Or could I chose an address which should pay the ...
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1answer
17 views

Gas deduction on contract creation inside a contract

I want to create a Contract (TokenTimelock from Open Zeppelin) inside of a registry contract. It seems as if my contract needs gas to do this. So I am wondering about using delegate call because I ...
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1answer
826 views

When a contract transfers ether to an address, who pays the gas?

When a contract transfers ether to an address, who pays the gas? For example: function withdrawRefund(){ uint refund = refunds[msg.sender]; refunds[msg.sender] = 0; msg.sender.transfer(...
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0answers
12 views

How to use oraclize fee from contract balance instead of sender's wallet? [duplicate]

I am using oraclize query. I have a function that user's invoke but I dont want users to pay the gas fee for oraclize query, I want that fee to be paid by my contract balance, and if my balance is not ...
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0answers
86 views

How dapp owners pay for their clients transcaction fees in the Ethereum Blockchain?

I am currently dealing with a problem in Ethereum Blockchain. I wrote a smart contract in Solidity Language, about a site that someone can make his Registration and after the transaction is completed ...
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0answers
67 views

Pay for the users gas fee (ERC-721)

Is there a way for an NFT (ERC-721) so the contract creator pays for the gas fee when the user's trade tokens? Or add some sort of middleware CC payment so for the user that is not tech salvage not ...
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1answer
34 views

API for Gas Transection [duplicate]

I am trying to make a D'app. But I don't know how to fix this issue of paying gas every time. Do the user or owner need to pay everytime they use the application ? can we make it default gas by some ...
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1answer
69 views

Can a contract hold the leftover gas for later transactions [duplicate]

Is it possible to leave some gas in a contract for future action and / or top up if the contract is stuck. if yes could you please direct me to documentation.
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0answers
98 views

Who pays for the gas when i send a transaction containing a signed transaction of another user

I would love it if there was a way for me to pay the gas costs for a signed transaction I receive and then relay to a node. So I am the submitting the transaction, but its data contains a signed raw ...

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