Questions tagged [exchanges]

This tag should be used for questions regarding exchanges. Exchanges are sites which allow for the conversion of Bitcoins to various world currencies as well as alternate cryptocurrencies.

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5 views

Withdrawing Coins to hardware wallet

I have several coins in one exchange, and I want to withdraw them to my hardware wallet. The issue is, that the fees that I am asked to pay are actually higher than the total value of the coins. Is ...
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4answers
3k views

Are there any opensource PHP cryptocurrency exchange/marketplace

As the title suggest, are there any opensource PHP cryptocurrency exchange/marketplace. Most of the ones I found does not seem to work or are abandoned.
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17 views

How to handle accounts balances

My goal is to manage a huge group of people investments. let say each month each one puts in a different amount of dollars (it may even be 1 $) and I need to send to his wallet that amount in bitcoin....
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1answer
419 views

What is the right method to calculate Relative Strength Index (RSI) for incoming real time data?

I am working on a trading bot that computes values for several indicators including the RSI. I subscribe to real time minute-level market data from an exchanges, and as new data arrives, I get the ...
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1answer
43 views

How to verify Wrapped Bitcoin (WBTC) issuance

I'm trying to understand how Wrapped Bitcoin (WBTC) issuance can be verified. The WBTC custodian, BitGo, published the following material: https://wbtc.network/dashboard/audit This is a list of ...
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2answers
26 views

Can a person only send large amounts an have a $500 transaction log between us before he could send? How can i get around this?

Recently I going to receive a donation from a man and he tried sending a large amount. The amount wouldn't send he said we had to have at least $500 in transactions before it would go thru. Does this ...
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1answer
46 views

How do exchanges manage their bitcoin/crypto? It only takes 1 employee with private keys to steal it all

So hear me out. I understand exchanges have hot/cold wallets and mostly use their hot wallets. But at some point they need to send crypto from their cold wallet to their hot wallet. Who does this? The ...
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2answers
36 views

What causes synchronous price movement within and between crypto exchanges without matching trades?

I have observed different crypto exchanges for quite some time now and analyzed the potential for different kinds of arbitrage. However, I don't quite understand what I am seeing. Examples: Observing ...
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1answer
95 views

Confused by the term: trading partners. And how to convert more fringe currencies back to bitcoin

Two questions: I am confused by the term: trading partners like BTC/ETH, etc. I'm into some more of the fringe currencies, IOTA, and SAN. Bought them with bitcoin on bitfinex, how to convert back? ...
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1answer
49 views

BTC Treasure Hunt Volume 2

Similar to Whoiszo, I too am helping a friend locate a bitcoin treasure. In a period between 2010 and 2011 my friend owned a blackberry curve 8330. At the time she was into some online gambling and ...
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1answer
503 views

Where can I find altcoin inflation rates?

I know I can use coincap.io and CoinMarketCap to see a lot of good information about altcoin relative values, and cryptocompare has good detailed information, but where can I access inflation rates ...
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1answer
766 views

Signature for this request is not valid

im testing the binance api but cant get over the signature problem can u spot a mistake on my signature?: const crypted = CryptoJs.HmacSHA256("timestamp=" + new Date().getTime().toString() + "&...
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3answers
161 views

How hard is it for an exchange to adopt native segwit? Is it not as simple as updating the address regex checker on the front-end?

Just wondering, maybe I'm missing something. Are there changes on the backend needed to be implemented as well? Not as simple as changing the regex validation on the front end?
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2answers
134 views

How to accept bitcoin and giving each user a unique address amd automatic withdrawal

I want to create a website when users on singing up will get a unique address and after getting my websites service,they can withdrawal the money also automatically. Is that bitcoin integration free ? ...
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1answer
68 views

How to buy BTC as a company

Is there any other options how an i buy BTC other than on an exchange ? Why do i ask, we would like to buy BTC as a company which is not in ENG speaking country. For that reason all paperwork has to ...
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2answers
3k views

Calculation of arbitrage profit

I have made calculations based on 3 exchange buy and sell orders. (Cryptsy, C-cex and Bter) and have taken DOGE/BTC market into account. Both cryptsy and C-cex have the same calculations to get the ...
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0answers
42 views

How many hops does Coinbase and other exchanges track your movement of BTC when it leaves their exchanges?

I've read reports of Coinbase users getting an email stating that they detected their Bitcoins being moved to an unapproved exchange or site after removing their bitcoins off of the exchange. What is ...
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1answer
81 views

How to use Multisig feature on Bitcoin Core RPC in an online exchange?

I've craeted a small online exchange based on Bitcoin Core. The features in this application are: User send request to get a new address, and the Bitcoin Core generate a new one with defined ...
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2answers
504 views

Exchange currency trade history

I am looking for datasets of trade history, which contains the following information: date-time, buy/sell, price. The currency pair and exchange is not important.
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1answer
105 views

Keeping wallet addresses outside bitcoin core

I'm trying to build a good security for my online bitcoin based application. Is something like this possible? send_bitcoin(address) create_address() sweep_balances() + | | ...
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1answer
2k views

Access coins stored at Cryptobridge?

I have just discovered, albeit far too late, that Cryptobridge has closed. Now, there is a lot to say about this particularly dodgy move, but I won't and I'll keep this simple: How can I access the ...
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2answers
237 views

Bitcoin exchange platforms and foreign exchange regulations

I'm wondering how cryptocurrency exchange platform adapt to country regulations where foreign exchange is forbidden (especially where sending money outside is forbidden). How they could buy Bitcoin ...
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17answers
221k views

How can I buy Bitcoin via a Credit Card or Paypal?

I want to buy some bitcoins. Ideally, I would like to buy them on the MtGox exchange (because the consensus seems to be that this is the most reputable exchange), however I have found the system for ...
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1answer
35 views

How to 'buy the dip' without constantly incurring network fees?

I'm a newby to the crypto world and one thing that I have seen a lot of is people saying to 'buy the dip!'. Fair enough, I like that idea. However, I have limited funds, and so thought that the best ...
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3answers
818 views

Does any exchange site let me automatically sell Bitcoin to USDT (or USD) right after I receive it?

I want to sell Bitcoin automatically and immediately after I receive it. Is there any exchange site has this feature?
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1answer
149 views

How to exchange small amount of bitcoin?

Hi I have a little question could you tell which is the best method to exchange 2.27mBTC (18€) in euros or USD? I registered on coinmama but the minimum for them is 50€ is there any other exchange ...
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1answer
54 views

Can not find or remember exchange

About 4 years ago i gave my son some BTC for his Birthday.... Trying to teach him a bit of financial responsibility..... he created a wallet, on an exchange i believe, i wasnt part of that, as i ...
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1answer
4k views

Binance API SIGNED GET request error code -1100 on signature parameter

I am trying to load my crypto portfolio into Excel so I can use its easy analysis functionality on my trades. However, I'm having trouble connecting to the API using VBA's WinHttpRequest. I use the ...
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1answer
15k views

Can I send Bitcoins without a wallet

How can I send bitcoins to someone, without having to purchase them first or set up a wallet? I'm looking for a service that will send N bitcoins to a given address. I pay them with my credit card or ...
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1answer
2k views

Convert Theta ERC-20 to Theta Main Network [closed]

As a test, I transferred one Theta ERC-20 token to my new Theta web wallet, and I see it there. How do I now convert it to the main net Theta?
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2answers
281 views

How Bitcoin wallets and it's transfer process work?

I am very new on cryptocurrencies, and like to understand it's transfer process. I think if I want to buy Bitcoin, I must download a Bitcoin wallet, then find a person who has Bitcoin. Then he/she ...
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0answers
36 views

Duplicate Wallet

I had a wallet on an exchange. For a few months I was using it with no trouble. Then one day I sent some BTC to it and it never showed up in the wallet on the exchange. I can see it in bitcoin ...
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1answer
112 views

Bitcoin / Crypto and exchanges!

When we buy/ sell bitcoin through some exchange say "Koinex in Indian context", what is the process i.e. actually followed ? 1. Does exchange communicate to node(s) in the bitcoin blockchain thru my ...
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3answers
912 views

How do I determine the value of new altcoins?

So, I'm curious about the value of altcoins. Let's say I were to create an altcoin, and get some people to use it... how would I calculate the value of the coin? Is this determined by exchanges? Or ...
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2answers
1k views

Dollar cost averaging approach to Bitcoin investing?

Are there any services offering a dollar cost averaging approach to Bitcoin investing, i.e. something like an index tracker fund which purchases a set amount on a regular basis? If not, are there any ...
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1answer
44 views

Trying to understand how exchanges handle crypto

From my understanding. (which is very very limited) Crypto exchanges give their users a bitcoin address to send their crypto to. This address is a derived/child key from their own wallet. Once this ...
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1answer
35 views

Crypto Exchange that Offers Withdrawal to Banks in Saudi Arabia [closed]

I need any crypto exchange that offers withdrawal (cash) to banks in Saudi Arabia. There is one exchange that I know of is Fasset but it's still in its beta phase. I want to know if there's any other ...
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2answers
36 views

How do exchanges provide wallets unique wallets to users but also keep transaction fees low?

So I understand that exchanges don't have to perform updates on the blockchain. However I'm not sure how they figure out the following solution without having to pay blockchain fees? I guess they do i....
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0answers
169 views

Who was the owner of the first crypto exchange bitcoinmarket.com (aka dwdollar)?

I am researching the early history of Bitcoin. We know that bitcoinmarket.com (the first exchange) was created by 'dwdollar'. Did we ever find out the real name of the owner or owners? or are these ...
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6answers
65k views

What is the strategy behind a sell wall?

I understand the idea behind 'bid walls', but on Kraken, prices are being kept low through the use of 'sell walls'. The volume on this exchange is too low to have a chance of getting through these ...
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1answer
35 views

From Edge to Poloniex

Bought bitcoin and have a balance in a exchange account at Poloniex. Is there another step I need to take or is this where the estimated value that changes is where I will be able to send this back to ...
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1answer
47 views

Is there a good website or resource comparing how all exchanges are structured under the hood?

So one of the issues I am running into is that there are competing definitions for things like: exchange, broker, trading platform, exchange platform, centralized, decentralized, P2P trading, etc. And ...
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2answers
198 views

Pros & Cons of Self Hosting Bitcoin Node vs using a 3rd Party Service?

We are a medium size company building a blockchain application that requires us to interact with the Bitcoin blockchain (+ several other cryptocurrencies). One option is for us to use a 3rd party ...
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1answer
22 views

Why do exchanges provide ask/bid transaction data like the NYSE and NASDAQ?

Bitcointicker.co provides a very slick, very active display that purports to be all the ask/bid transactions on several exchanges (Gemini, Kraken, Coinbase, and others). Where does it get its data? ...
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1answer
646 views

Does one of these exchanges have a sandbox to test?

I want to test some trading. Does Binance, Bittrex, Poloniex, Kraken or Gemini have a sandbox to trade fake crypto to test systems?
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6answers
22k views

Is there an opensource crypto-currency exchanges engine?

I'm looking for an opensource crypto-currency exchange engine. My preference would be for something easy to use like joomla or drupal. My exchange setup needs support for alt-coins and bitcoin. I ...
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1answer
22 views

How to calculate conversion exchange fees?

According to Exchange A, I can withdraw 1 BTC as 90 fiat. Or I can send them 1 fiat in return for 0.01 BTC. How do I calculate percentage fees for one way conversion?
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1answer
57 views

“Hot”, “Cold” & “Warm” Storage Wallets? [duplicate]

I've seen a number of sites advertise they support "hot", "warm" and "cold" wallet storage solutions (the only thing I haven't seen so far are "frozen" wallets)....
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0answers
48 views

How do exchanges automate transfer of Bitcoin from cold stoarge wallet?

Most exchanges use Cold Storage to store the bulk (approx. 95%) of their user assets. Only a relatively small amount (approx. 5%) of funds are held in their Hot Wallet. My question is, what process is ...
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1answer
21 views

Can an exchange or marketplace benefit from private key encryption?

A powerful security technique to prevent theft of Bitcoins from a user's online wallet is to encrypt the user's private key with his password without ever stroring the PK directly in the database. ...

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