Questions tagged [exchanges]

places to trade ether with other currencies or assets

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1answer
640 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 ...
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1answer
261 views

How to implement user deposits for tokens for an exchange

If we generate new deposit addresses for every user we face following problems: - we need to transfer tokens from individual wallets to our exchange wallets - we need to fund the wallets with ether to ...
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0answers
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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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1answer
307 views

what is the role of relayer in 0x protocol?

I understand that 0x protocol allows orders to be transmitted across off chain channel to reach large audience and potential buyers/sellers. However, I don't get what a Relayer is exactly.
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3answers
61 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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0answers
118 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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2answers
163 views

Can i use geth for other purposes than mining

As you can understand from question, Iam totally new to crypto currencies. I have a node running on amazon linux ec2 instance. I do NOT want to use it for mining. I want to create and manage accounts ...
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1answer
59 views

Exchange on smart contract

Question: Is it possible to upload tokens on a contract and then distribute it to whoever sends ETH to that contract (not create a token as if it is an ICO, but preload already existing one). For e.g. ...
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0answers
45 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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1answer
65 views

Sent transaction from exchange to ICO (transaction failed) [closed]

I sent a transaction from an exchange to an ICO and my transaction failed. Is there any way to retrieve my Eth from the ICO smart contract address? I guess somehow my transaction failed. please help ...
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1answer
51 views

Sending and Receiving funds from/to Contract Adresses to/from Exchanges

I am new to Ethereum. We want to be able to receive funds (ETH and ERC20 tokens). It seems that exchanges do not allow to send funds to smart contracts, is it possible vice versa to send funds from ...
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2answers
392 views

Why do token transfers sent to the Binance wallet cost very little gas?

I noticed that token transfers sent to Binance are barely using more gas than a regular Ether transfer. ~22,000 gas. Other transfers of these tokens seem to charge almost double the amount of gas. ...
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1answer
547 views

What happens if a token symbol has four letters?

What happens if a token symbol has four letters? Do exchanges display it as only first three letters, don't display it at all or? If they display only first three letters I would have a problem with ...
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1answer
105 views

ETHER did not reach Myetherwallet

I send ETHER from Livecoin ,Etherscan confirm transaction but Ether did reach Myetherwallet. Livecoin and Etherscan shows that transaction successful. What should Ido for recover my ether?
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1answer
617 views

How to detect ETH wallet does not belong to Exchange [duplicate]

How to detect if ETH address belongs to Exchange? Is there any proper method or API to detect it 100% correct?
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1answer
180 views

Sent my ETH from Remitano to COSS but I cannot find my TXID on Etherscan. Why? [closed]

I already made an ETC transfer from Remitano to COSS.IO. However, when I try to track my provided TXID, there is nothing in Etherscan. TXID: ...
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1answer
52 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 ...
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1answer
100 views

Persistence of tokens at crypto exchanges

There are a lot of crypto exchanges around the world and some of them have an option to add your token to the exchange. But if I get it right, the token should be ERC-20 compatible, therefore Ethereum-...
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2answers
67 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?
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1answer
28 views

Need to define all the varibales for an exchage during the contract deployment?

Creating ERC20 is not that hard. We can just copy the source code and deploy it on the main network. But creating an own exchange system for the token is a differnt part. If we create a standard ...
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1answer
1k views

How do I know my gemini.com's wallet's public key?

Can I know my gemini.com's wallet's public key? gemini.com is an exchange which deals in BTC and ETH. Thank you.
3
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1answer
619 views

how does exchanges manage user's Ethereum wallets?

I noticed that Binance exchange created an unique address for every user to deposit ERC20 tokens. after the deposit, Binance transfer those tokens to a specific address, which is marked as "Binance"(...
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1answer
261 views

what happens if I try to send my gdax btc to an eth address?

My question is about transferring btc to and eth address by accident?
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1answer
325 views

How are some addresses known to belong to certain exchanges?

I searched for a Ethereum address into etherscan.io and it showed me that it was a Poloniex address. That address was the receiving address of a wallet I created on Poloniex. How did etherscan know it ...
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0answers
64 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
192 views

how to change ether to flat currency [duplicate]

I would like to know how can i exchange my ether in my MEW wallet for flat currencies like USD, INR etc. It would be highly appreciable if anyone can guide me with this. Thanks in Advance!!!
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1answer
740 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
109 views

Is there a log of Ethereum Trading Volume for a given currency over time?

I know CoinMarketCap lists daily trading volumes for multiple currencies, but how do we access a log of these volumes for a given currency over time?
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2answers
586 views

Why would some exchanges not support receiving Ether via smart contract?

I notice that some exchanges, such as Bitstamp, only support withdrawing Ether via a smart contract. On the other hand, many exchanges do not support receiving Ether via smart contract. Why would an ...
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1answer
1k views

Trading with smart contract

I am writing a smart contract as a fund for me and some friends to invest ETH in, allowing for investment proposals to be submitted and voted on. For example, 10 people each put in between 1 and 10 ...
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0answers
194 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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1answer
340 views

Multisig address Vs Contract address

I happened to deposit a new token "POWR" on bittrex exchange and when clicked to generate a new address i got a 0xa217f4c09ff1a27be0724f1efaf0fc5e87ca3031 When i checked the address in Etherscan the i ...
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2answers
2k views

Bittrex using smart contract address to get funds [ ERC-20] deposit

This question is not Just specific to bittrex, but i wanna know it in general that can any exchange ask its user to deposit tokens to a smart contract? I have been using ETH since a long time, i have ...
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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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2answers
84 views

Smart Contract ICO

Assuming that I created a fully-functioning smart contract for a NEW COIN, is the same smart contract required when I wanted it listed on e.g. ETHERDELTA? Thanks, Mike
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0answers
658 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 ...
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1answer
427 views

Transfer Ether from main account to different accounts

I want to purchase some Ether from currency exchange websites and then transfer it using an API call to different accounts. Do I need a blockchain for such scenario ? Also, can we create wallets ...
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0answers
59 views

I want to create a local exchange site how to add ethereum? [closed]

like a said I want to build an exchange site how can I add ethereum on it?
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3answers
313 views

Crypto exchanges comparison spreadsheet

Is there any website or online community maintaining a spreadsheet comparing the different crypto exchanges?
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1answer
45 views

Token contract for exchange fund manager

I'm seeing lot's of address like this for exchange sites that they manage their user balances in a single address like this: CoinExchange.io: https://etherscan.io/address/...
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1answer
95 views

What is valued at X dollars at an exchange? One… wei?

Assuming an exchange like Coinbase is selling "ETH" for $300USD:1ETH, and I give them $300 then how many of what exactly do I have? Do I have one wei? http://ethdocs.org/en/latest/ether.html
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3answers
5k views

How to programmatically detect and accept ETH and ERC20 deposits

I'm looking to replicate the functionality provided by cryptocurrency exchanges such as Kraken and Poloniex when it comes to depositing ETH and tokens. Namely: Users can generate and send funds to ...
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1answer
69 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
995 views

ERC20 tokens approve and transferFrom

I found an ERC20Basic interface floating around which closer matches what I wanted to implement for a token as I'd prefer to not have support for approve and transferFrom. What are the implications of ...
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1answer
2k views

Is possible to check if a address belongs to an exchange?

Most of the exchanges do not accept utility tokens from a contract. Is there a way to validate/check if the target address is/belongs to a exchange?
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1answer
2k views

ICO crypto-currencies accepted during the sale: ETH, BTC, or even fiat?

ICO contracts are meant to accept Ether as payin for the tokens sold, for example https://cartaxi.io/pre-ico or https://www.herocoin.io/ But there are a lot of ICOs running on Ethereum that accept ...
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1answer
273 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
786 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 ...
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1answer
621 views

How to find out price of ETH and altcoin at which they were bought from the completed order

I know this might be a very mathematically retarded question, but I am trying to find out the price of ETH and the altcoin at the time I bought them from completed order history. All it shows is the ...
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0answers
146 views

How does polonix works? [closed]

We are trying to build a platform where a user can buy any coin with USD/BTC. The functionality is similar to that of Polonix (Deposit/Withdrawal). So, I was not sure on how to manage users' account. ...