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5

You are almost certainly being scammed. Bitcoin wallets do not require activation. In any case, even if you were dealing with some entity that does require verification for using their services, the amount you claim is stored with them exceeds the amount they are asking for - a sane, legitimate business would just charge the amount against what they ...


4

This is most likely a scam! there have been a similar question recently Why do I have to deposit BTC as missing turnover There is no need to send bitcoin or money to receive a private key or unlock a bitcoin wallet, be careful.


3

These are indeed hard problems, but luckily already served by BTCPay Server, with extra features like lightning payments: https://github.com/btcpayserver/btcpayserver. You can just run it via the included docker recipe (https://github.com/btcpayserver/btcpayserver-docker) and communicate with it via its API. Or if you really want to reimplement the nitty ...


2

This doesn't sound correct to me. You're relying on a centralized service to fetch blocks. What if their system has an error and sends you incorrect data? What if their service is unreachable? It doesn't seem like you have any way to handle blockchain reorganization. You might end up crediting a payment twice, or crediting where a double spend was ...


2

You are being scammed! Don't send any BTC to them. Proper Bitcoin wallets are generated on your computer / phone, they contain bunch of private keys, each of one has corresponding address, to which you or others can send BTC. There is no concept of "activation" in Bitcoin. If you accidentally transferred BTC to a wrong address, either it's from somebody ...


1

You are right, the only ones who should have access to that address is CoinsBit.io. If they claim they are unable to recover the coins, there are only three possible scenarios: They have lost all copies of the private keys, or the root key used to derive them - this would be extremely irresponsible of any exchange, but does not appear to be the case here ...


1

Cryptocurrency exchanges are generally taking custody of your funds while you are using their service. You send a deposit of fiat to their bank account or cryptocurrency to an address under their control and after this payment has been confirmed, they credit you a balance on their platform. When you trade one currency for another, they only update their ...


1

This is possible, but your customers will have to use a wallet that supports the functionality of signing messages using the wallet’s private keys. For example, bitcoind has the signmessage command. The user could input a message such as ”todays date is ____, and I control bitcoin address ____, which sent coins to ____ service” in order to prove their ...


1

You will need to find an exchange that accepts your bank account or method of transferring from your account to the exchange. A number of exchanges out there not personally sure which would accept your bank, but another option is Local Bitcoins Here is the link for Iran https://localbitcoins.com/country/IR UPDATE 1st June 2019: Local bitcoin is now banned ...


1

Exchanges generate a new address for each user when a user wants to deposit, so when they receive a deposit to a specific address, they know who to credit the deposit to. Since Bitcoin does not use accounts, there is no need for the exchange to consolidate their received Bitcoin. They can simply spend from multiple addresses when they want to send Bitcoin ...


1

In general you should be able to transfer your bitcoin between any two exchanges for trading. As an example, you may wish to move BTC from GDAX to Gemini for trading. First you should get you'll need to get a deposit address for your Gemini account. Next you should follow the instructions to withdraw digital currency to an external address from GDAX. You'...


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