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Questions tagged [exchanges]

places to trade ether with other currencies or assets

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3answers
111 views

Is there any decentralized exchange with zero trading fees for ERC-20 tokens at the moment?

Is there any decentralized exchange with zero trading fees for ERC-20 tokens at the moment? All fees except gas fees should be zero. I already tried Bancor and Kyber but, as far as I can tell, they ...
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2answers
44 views

How do online wallets store users' tokens?

Online wallets like Coinbase hold private keys for users. How does it work internally? Does Coinbase generate a private key/address for each of its millions of users and thus keep track of millions of ...
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2answers
272 views

Crypto exchanges comparison spreadsheet

Is there any website or online community maintaining a spreadsheet comparing the different crypto exchanges?
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2answers
14 views

Create token exchange by defining decimal values

I just learnt a lot about solidity and decided to put it into practice. Something I truly don't understand is how I can bypass the limitations of this programming language. Assume the following ...
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2answers
60 views

How to make token for exchange such as bittrex? I'm interested only in technical side of this question

Should I set a starting price for the token? Is there a source code for the token for trading on the exchange?
3
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1answer
566 views

Smart Contract with stable coin

Is there any stable coin, which can already be used with smart contracts? If not, is there a possibility to exchange a stable coin in real time into a smart contract feasible coin like ETH by help ...
2
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1answer
65 views

ERC20 with custom sale mechanisms?

Let's say I want to create a token, but I don't want this token to be exchanged too freely, in order to avoid too much of speculation (real estate for example). People willing to sell the asset will ...
2
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1answer
51 views

Why does Ethereum need exchanges?

As I understand, currently the preferred way to acquire ETH (for investment purpuses) is through a third-party exchange service. Isn't ethereum all about executing smart contracts when a specific ...
2
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1answer
1k views

ETH vs ETC on Dwarfpool and Poloniex?

Noob miner here, Does anyone mining on Dwarfpool know if they have updated to the forked code (ETH), or are we still mining Ethereum classic (ETC)? I currently use Poloniex as my intermediary wallet ...
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1answer
54 views

List of Token Exchanges Available on Testing Network?

Found Kyber Network Token Exchange on Ropsten so far. Please share if you know more token exchanges available on any testing network for trading Tokens as a test.
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1answer
47 views

How does the large-scale crypto trade platform , just like Binance or Bittrex , track ETH and Token transfer in their every account over time?

I wrote some simple code with web3js to track an address/account's transaction in real-time. It works, but I think it is in poor performance or could consume too much cpu resources. sample code ...
1
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1answer
38 views

Trading ETH with lightweight Know Your Customer requirements

Clearly banks follow AML/KYC regulations. But every bitcoin exchange (Ethereum exchange) I've seen has registration requirements that are far in excess of any bank I've used. Gemini requires your ...
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1answer
10 views

Which exchanges are currently the best and easiest to list ERC-20 tokens on?

Which exchanges are currently the best and easiest to list ERC-20 tokens on? Hello, I am issuing ERC-20 tokens at the moment. Which exchanges are the best and easiest to list tokens on at the ...
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1answer
69 views

Generate random address for ERC20 Token deposit and consolidation?

I'm trying to implement a mechanism to generate random addresses for users to deposit ERC20 tokens and then consolidate the deposited tokens to a cold wallet address later, somewhat like what an ...
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1answer
102 views

How to push reserved tokens to market after ICO

I have written a contract where 50% tokens are in reserve and owner wants to sale those tokens via Exchange. Should I add BUY function in contract to achieve this feature. function buy() payable ...
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1answer
469 views

Bitpay for Ethereum?

I'd like to help an organization accept Ethereum. However, they need a Bitpay-type service that sends them USD right away. I know they can just manually sell on Coinbase daily/weekly, but they can't ...
0
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1answer
593 views

Buy a small amount of Ethereum

I'm new in Ethereum, and I would like to buy a very smart amount of Ethereum. I want to learn more about ETH, and at the moment I would like to invest $10 or $15. Do you know any website where I can ...
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1answer
60 views

What is rpc and p2p code for Ethereum token? What to give as GitHub source code of an Ethereum token in exchange?

I’m new to Ethereum development. From ethereum token docs I came to know the process of deploying the token. But at some exchanges they ask for RPC and P2P port as well as the github source of the ...
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1answer
245 views

user api to exchange eth token and wallet address creating using code

Is there any API to help exchange ether or tokens online which will help in coding an exchange. For bitcoin one can generate a wallet address, is it possible to generate a wallet address for Ethereum ...
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1answer
860 views

Swapped ETH to BTC at myetherwallet.com (via MEW) and still no funds

about 2 days ago, using myetherwallet.com (via MEW) I swapped some ETH for BTC, with no funds arriving at my BTC wallet, and funds are still missing from my ETH account. I instigated the swap, some ...
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1answer
73 views

Bought Ethreum with BTC, exchange freezed, sync freezed too

I've purchased ETH by BTC. My exchange stucked on "Awaiting Exchange" (like 2 hours now) and my Sync stucked at the same time (19%). What should I do now? Thank you!
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1answer
148 views

Ether Delta and the ICO guide to getting listed

DISCLAIMER: This is a new ICO wanting information on how to get their token listed, uploaded or placed within EtherDelta's listing so we can sell on ED, Not a ICO guru telling how to do it. Now that ...
3
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0answers
2k views

Missing Ethereum Transaction! From Poloniex to MyEtherWaller

I have sent my transaction from poloniex to Myetherwallet and transaction showed up only for 10min and after that it disappeared completely without any trace of it. it didn't return to my original ...
2
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0answers
105 views

Tracking orders on 0x network

How are the various 0x network order trackers sourcing on-chain settlement data? My first assumption was that they were utilising the Etherscan API, however Etherscan have their own tracker, found at ...
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0answers
187 views

Are there any exchanges like Shapeshift for testing and development?

I'm developing a simple application which involves calling Shapeshift, Bitfinex and similar exchange APIs. They do not provide any sandboxed or under-testnet versions of their APIs for clients to use....
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0answers
34 views

Ethereum Exchanges compatibility matrix? <- concerns due to warnings regarding “smartcontract deposits”

Is there a "exchanges compatibility" features list/matrix, so I know between which I can move Ether directly? Context+example use case: I've tried to move Ether between exchanges, however warnings ...
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0answers
47 views

how do you handle token value data type in database?

Ones who do exchange / Investment platforms development, all ERC20 tokens has its atomic unit and only moved by specifying value in its atomic form. for eg: 1 BuritoToken with unit decimals as 18, ...
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0answers
156 views

ERC223, drawbacks and exchanges still not supporting it? Should I just use HasNoTokens?

I know it has been discussed many times and in many articles on ERC223, for replacing ERC20. We are launching our tokens and hopefully ICO soon too, it seems that we should go for ERC223, since more ...
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0answers
14 views

API of EtherEx, give an example

Please give an example how to use EtherEx API from both JavaScript and Python programs. Where should I connect before sending a method call? I am especially interested in add_market method.
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0answers
28 views

Is there any way to create tokens for every user in my platform?

I'd like to make a user issued tokens exchange platform. For example, there are A tokens issued by user A and B tokens issued by user B. One A token is exchanged with Two B tokens. All users have ...
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0answers
41 views

How exchanges manage their wallets for users, and where can i find info regarding

I am developing a platform where average users can easily trade Cryptocurrency. I would like to know how exchanges are managing wallets. where they provide a depositing address to each user for each ...
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0answers
61 views

Has an exchange ever voted with a users tokens?

If a token allows tokenholders to vote on some issue/proposal/action or whatever, it is conceivable that a token-exchange that holds its customers' tokens could covertly, or perhaps openly, vote on ...
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0answers
306 views

Decentralized Exchange on Ethereum

I know this was asked several times on stackexchange, but after I see there are some alternatives for Ethereum Decentralized Exchange, but none seems to be stable. I know about http://etherex.github....
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0answers
270 views

Error: VM Exception while processing transaction: revert due to require statement

I am new to ethereum world and trying to get some practise through my MSc Project. I am attempting to create an ethereum application for trading electricity. The contracts are the following: pragma ...
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0answers
43 views

Persons who successfully placed tokens on public exchange: did you shared source code of contract?

One of my clients created token (standard ERC20) and want to put it to public exchange site. Exchange policy requires reference to Github repository. Client asking whether it safe to share source code ...
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0answers
36 views

Deposit ERC-20 Token to DexDelta Fails

I'm trying to deposit my ERC-20 Token to DexDelta (EtherDelta fork) but it fails and I don't understand why, could someone help please? I first call approve with DexDelta contract address and the ...
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0answers
82 views

What's the most user friendly way to accept ERC-20 tokens deposits?

We want our exchange users to be able to deposit and withdraw erc-20 tokens. My current idea is to provide a new deposits address to each user where they can send their tokens. The alternative would ...
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0answers
137 views

How to sell token using web3

Sorry if this has been asked , I can't find solution . What I want to achieve is having token that users can buy and sell (price taken from contract ).I have used web3 before for sending transactions ...
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0answers
32 views

how to send/receive user-specific ether in my app?

i need to design such a system that whenever user A and B send ether to my designed address, he is sending ether to my only address, but in my app they will see their personal amount updated. It ...
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0answers
16 views

If I was using a website for Peer to Peer trading---

I've been using local Etherium to sell my Etherium at a markup and it's been working but some people are using stolen cards to buy it or they are just plain charging back. What form of payment besides ...
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0answers
623 views

Transfer Ether between wallets

I am using Kraken to purchase Ether and now I want to use some third-party wallet to withdraw Ether and wallet should provide an API to transfer Ether from my wallet to another wallet. MyEtherWallet ...