Questions tagged [exchanges]

places to trade ether with other currencies or assets

72
votes
6answers
272k views

How do I buy Ethereum with USD?

I am a complete noob at investing. I have never bought stock or invested in anything before but I have $300 I would like to turn into Ethereum. Could someone please tell me step by step how to ...
17
votes
3answers
4k 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 ...
8
votes
2answers
6k views

How to recover BTC that wasn't converted into ETH by Shifty via Mist?

I tried the "deposit with BTC" option BTC transfer was recognized in "Awaiting Deposit" Then "Awaiting Exchange" timed out, I got a "try again" dialog, and was shown no way to get my BTC back or to ...
13
votes
4answers
4k views

Where can I buy Ether?

Where are the best places to buy ether with the least resistance and lowest fees? Is there something like local bitcoin, but for ether?
10
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, ...
6
votes
2answers
5k views

Are funds returned if one transfers from an exchange to an invalid Ethereum address?

I transferred some ether form an exchange site to an invalid address (invalid in that the correct address was trailed by 6 numbers I accidentally pasted in). Looking for that address on Ethereum ...
3
votes
1answer
2k views

Can my Ethereum Based Tokens / Coins be traded on a crypto currency exchange?

I am building my own Crypto based on Ethereum Blockchain. Is it possible for this newly created currency to be traded on any crypto currency exchange? And secondly, will my new currency be compatible ...
2
votes
2answers
780 views

How to receive ether in wallet address and forward to another address on successful deposit?

I want to implement a feature in which users will send ether to wallet address(0x123) and on successful deposit, it needs to automatically transfer to my cold wallet(0x983). I can able to achieve ...
9
votes
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 ...
11
votes
2answers
3k views

Why are smart contract outputs different from ordinary transactions?

A Coinbase exchange engineer said: "Depositing from smart contracts is hard. Smart contract outputs are not like normal ETH transactions and it is non-trivial for us to get notified when we ...
7
votes
3answers
25k views

Sent ether from wallet to bittrex, 12 hours later no balance on bittrex [closed]

So I made an account on bittrex and I created a hex address so I could transfer over my ether, I went into my wallet and sent 0.1 ether to bittrex, 12 hours later my bittrex account still shows a 0 ...
2
votes
1answer
7k views

How to sell ETH for USD or EUR?

What is the process to get Dollar or Euro from Ether to my bank account? The easiest is to sell ETH into BTC on Poloniex, then I transfer my BTC to Kraken and on Kraken I sell BTC into Euro and the ...
2
votes
1answer
295 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 ...
7
votes
1answer
3k views

How does EtherDelta work?

I'm still learning Solidity and contract development. I have never used EtherDelta. I know it can be used for trading different tokens, but I would like to understand the following two things: How ...
12
votes
3answers
839 views

If the supply of Ether is finite, are there any mechanisms to deter hoarding?

The supply of bitcoin is capped at 21 million. The supply of Ether is similarly capped at ~90 million. If we are to assume that Ethereum will become more popular as time progresses, and if we also ...
5
votes
2answers
5k views

What is the difference between ICAP and HEX addresses?

I've read what Kraken have mentioned in the difference guide but I haven't understood it well. I plan to mine ethereum. What fits better for me?
2
votes
1answer
2k views

Is it possible on Ethereum to create a token this way?

Can I make a token using Geth or another Dapp or method and meet these conditions: a) I should be able to create the token conveniently without too much programming involved b) I should be able to ...
2
votes
1answer
316 views

Accepting ether payments from exchange?

What would be the optimal way to accept order payments from users who have Ether on an exchange? I can't figure out how to link the orderID with the transaction, without creating a new contract for ...
1
vote
1answer
232 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.
1
vote
1answer
155 views

What determines the price of the ERC-20 token on a trading exchange?

I know that ERC-20 tokens are traded in pairs on the trading exchanges, but what essentially determines the price in USD? I would like to know if there's a specific algorithm that does the calculation....
1
vote
1answer
481 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 ...
0
votes
1answer
276 views

Why do exchanges maintain their own wallet?

On a crypto exchange, I transferred 1 ether from my account with let's say wallet A to my friend's wallet B. When I searched for my friend's wallet B on etherscan.io to see the transaction, the sender ...