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Questions tagged [crowdsale]

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11
votes
1answer
2k views

Is it possible to create ICO crowdsale seamlessly accepting multiple assets?

Most of the ICO crowdsales accept ETH only. Some accept BTC. Very few accept other assets. I was thinking about creating crowdsale that would accept as many assets as possible. While creating, ...
1
vote
2answers
381 views

ICO crowdsale without smart contract

I see that there are some ICO who collect ETH without smart contract and would like to know the negatives and positives for such decision. Thank you
9
votes
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 ...
7
votes
3answers
4k views

Error encountered, bailing. Network state unknown. Review successful transactions manually

Problem I get the following error after running $ truffle migrate --reset: Running migration: 1_initial_migration.js Replacing Migrations... ... ...
2
votes
1answer
753 views

Contract final touches. Problem with CappedCrowdsale

I am finalizing this basic but clean Crowdsale code. However, there is ParserError with "contract Cappedcrowdsale". Why? It does refer to Crowdsale though. Please check if this is a legit Smart ...
6
votes
3answers
1k views

how to setup multicurrency ICO / Crowdsale

I'm having difficulty finding information on how to setup a contract that accepts multi-currency like bitcoin, wave, ripple, etc. And also looking for a solution to distribute my tokens to these ...
3
votes
1answer
683 views

If a contract's function calls a function of another contract within it, is the address of the contract the msg.sender?

For example, a crowdsale contract has a function that creates an ERC20 token called "token" using a token contract that is already defined further up in the code being deployed. The constructor ...
1
vote
1answer
264 views

Implementation of an Allowance Crowdsale. Token Interface / _prevalidatePurchase-/_delivertokens-function

I am new to solidity coding and after I created some basic contracts as well as a ERC20 token contract I wanted to create a crowdsale contract. Now I am stuck and I have a question regarding the ...
0
votes
1answer
306 views

Mist - Rinkeby Test Net - No Longer Sending Confirmations

Im sure this is a very simple problem that one of the brilliant geniuses on this site should be able to answer! I have been testing a sample crowdsale using the Tutorials on https://ethereum.org/...
0
votes
1answer
267 views

Can someone explein me this Multi mint function (Solidity)?

I came accross this function to mint token for a crowdsale but I don't understand the meaning of the bit shift operations and what bit array should represent.. what is this code doing ? The code can ...
2
votes
1answer
880 views

Is it possible to divide my crowdsale contract into multiple files in order to solve gas issue?

I'm trying to deploy a crowdsale contract, which is using open zeppelin, on ropsten network but I got gas related error. The error says "please check your gas amount". How can I solve it? I think this ...