Questions tagged [crowdsale]

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2
votes
1answer
692 views

In an Ethereum smart contract, can I check the balance of other ERC20 tokens from the sending address of a recieved transaction?

I'm currently designing a smart contract, where I'd basically like to incorporate a "coupon" like relationship between two different coins. Bob can send the smart contract CoinA, and receive CoinB as ...
0
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2answers
216 views

Send funds to owner after each buy or after several?

I copied and modified smart contracts from TenX and EOS. TenX sends funds to their wallet after every purchase from a buyer: function createTokens(address recipient) public isUnderHardCap saleIsOn ...
0
votes
2answers
295 views

Resell or Refund the tokens after the ICO ends

I have 2 questions about ICO: 1.What are the available methods to resell the tokens after the ICO ends? 2.Can the user return the tokens after the ICO ends and get a refund? For example they buy X ...
0
votes
1answer
341 views

Is that a need to add every investors to multisig wallet?

I read an article here, it mentioned that Another convention which has by now become a de facto requirement is collecting all contribution in a multi-signature escrow wallet, with all the names of ...
-2
votes
1answer
138 views

Is ICO a crowdsale or decentralized organization?

I want to create an ICO for a project in order to raise fund and found that there seems 2 options for me. One is to create a crowdsale and another is to create a Decentralized Organization. I am ...
0
votes
2answers
459 views

Is this a satifactory crowdsale contract? [closed]

Can one of you awesome people look over this contract for any issues? Its meant to be a simple crowdsale contract that has a deadline, a goal, and a minimum. Participants should have the option of ...
1
vote
0answers
759 views

How to access Token functions in remix.ethereum.org?

I'm looking at Crowdsale.sol from OpenZeppelin / zeppelin-solidity. Here's a snippet: import '../token/MintableToken.sol'; contract Crowdsale { MintableToken public token; After I create the ...
0
votes
1answer
250 views

BalanceOf from BasicToken & totalSupply from ERC20Basic not working from Crowdsale.sol

I'm using Crowdsale.sol from OpenZeppelin / zeppelin-solidity. Here's a snippet: import '../token/MintableToken.sol'; import '../math/SafeMath.sol'; /** * @title Crowdsale * @dev Crowdsale is a ...
2
votes
1answer
992 views

Crowdsale contract and safe withdrawals

According to crowdsale contract at https://www.ethereum.org/crowdsale tokens are transferred to a user account when "function () payable" is called by using external function tokenReward.transfer(msg....
1
vote
0answers
367 views

Capping Token Sale

How does one have a capped crowdsale? This is my code so far contract CrowdsaleToken is StandardToken{ string public constant name = "TestCoin"; string public constant symbol = "TCC"; uint public ...
2
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0answers
1k views

Crowdsale smart contract

We need a template of a fully workable crowdsale contract It should be with the time frame and we should specify rate and the wallet where all raised funds will go
0
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2answers
359 views

I am trying to develop an ICO using Etheroll's as a template. Why won't it compile?

Please see here, line 13 is not compiling in Mist. Can anyone help me understand what is going wrong? You can see that it worked, obviously, for Etheroll when they performed their ICO. https://...
9
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0answers
1k views

Pre ico and ico crowdsale contracts [closed]

Can you please recommend the best way to organize pre-ICO and ICO using Etherium smart contracts. I have found two options: 1) To make 2 different contracts and after ICO merge them (pre-ICO with ...