Use New Bitcoin Address for Deposits As announced before, your Bitcoin address for depositing funds to CEX.IO has changed.Pay attention that old deposit addresses will not be valid as of 2016-10-20.We kindly ask you to use the new address, not to lose your funds.You can find the new address by visiting https://cex.io/trade/finance and pressing "Deposit" next to your BTC balance.New addresses begin with a “3”.CEX.IO Launched Multisignature Bitcoin Addresses for Users As you know, we at CEX.IO always work hard to improve security of our platform even more.Today, we are thrilled to announce that Bitcoin depositing wallet addresses have changed to multi-signature Bitcoin addresses, offering an extra security layer for you.Considering this, please make sure to check out your new address, beginning with a “3”, in profile and use it to deposit funds to your account.Thank you for choosing CEX.IO!How can I withdraw my Crypto currency from CEX.IO?To withdraw coins please visit this page: Withdrawals can be made: using vouchers (for withdrawals to other cex.io accounts) usual withdrawals to personal wallets outside cex.io.

Please note that for security reasons the withdrawals are irreversible as a new disposable sending wallet is created every time a withdrawal is made - therefore please do not send your coins to lotteries and casinos using your CEX wallet - you will not be able to reacquire your earnings as they are usually returned to the sending wallet - please use your personal wallet instead.How to Pay with Bitcoins Learning how to use Bitcoin can still be quite difficult for new users because the easy-to-use layers on top of the underlying protocol are still being created at this point in time.Having said that, most people who have used digital payment systems, such as PayPal, in the past should have no problem learning how it all works in these early days.Having some bitcoins is pretty pointless if you don’t know how to spend them, so let’s take a look at how you can shop with Bitcoin online and send coins to your friends.Payment Addresses Bitcoin addresses are kind of like the usernames of the Bitcoin payment network.

If you want to send a payment to someone else, then you need to know their Bitcoin address.At this point in time, Bitcoin addresses are kind of like email addresses before they were simplified in the 90s.cex bitcoinThese addresses are a long string of random numbers and letters, and it isn’t exactly the most user friendly way to add somebody to your contacts list.comprar bitcoins valenciaHaving said that, you should definitely add a friend’s public Bitcoin address to your address book if your wallet has one.dogecoin securityOnce you have your friend’s Bitcoin address, you are ready to send him or her some bitcoins.To send a Bitcoin payment, the first thing you will want to do is open your wallet.There are many different Bitcoin wallets out there today, so we’ll stay way from the specifics of where you can find each button during the “send payment” process.

There should be a tab for sending payments in your wallet, so navigate to that section of your wallet to begin.Once you’re in the “send” section of your wallet, you will be asked to provide a Bitcoin address and an amount.If your friend has sent you a Bitcoin address, you can simply copy and paste it into the address box.Before entering the amount for the payment, make sure to check the unit name next to the box.Some wallets will use full bitcoins, while others can use bits or millibits.Most online wallets will allow you to enter an amount in US dollars or euros if needed, so don’t hesitate to use that feature as well.Once you’ve entered the required info into the two boxes, you can then send the payment.Please note that 0.0001 BTC will usually be added to the payment by default.This is a transaction fee that will be paid to Bitcoin miners.Deciding to skip out on this transaction fee can be rather costly because miners will only confirm transactions of their choosing.Instead of typing in a long Bitcoin address, you can also use QR codes to speed up the process.

When you scan a QR code with your smartphone, the details of a transaction will instantly be placed into the various “send” fields of your Bitcoin wallet.This is especially useful when shopping with your smartphone.While you’re going through the checkout process, a QR code will usually be displayed on your computer or a merchant’s POS device.All you have to do is scan the QR code and press “send” to complete the payment.While QR codes are definitely a move in the right direction, there is still a need to add regular usernames to the Bitcoin network.Instead of sending a payment to 1M72Sfpbz1BPpXFHz9m3CdqATR44Jvaydd, you should be able to simply send some bitcoins to “Jeff” or “Steve”.This is something that is already being corrected at the wallet level, but some of the core developers have also discussed coming up with a solution at the protocol level too.Sending a Bitcoin payment may seem clunky and inconvenient right now, but there are plenty of entrepreneurs working in the space who have an incentive to make the process as easy and simple as possible.

Sometimes it's helpful to prove to another party that you control an address, but without transferring funds.If you are wary of submitting photographic verification information, you can instead opt to sign a transaction from an address you have funded in some cases withdrawal addresses also can be used in your CEX.IO account history.Message signing is done through the Tools > Sign Message main menu option.Enter the address to sign from in the “Address” field: Then enter your CEX.IO BTC deposit address, unless otherwise requested, in the “Message” field: Pressing the "Sign Message" button will create a signature which, together with the message, can be given to our representative as proof that you have control of a bitcoin address associated to your CEX.IO account.Message signing is done through the Tools > Sign/verify message main menu option.Message signing is done through the Tools > Message Signing/Verification main menu option.Enter the address in the “Sign With Address” field: Then enter your CEX.IO BTC deposit address, unless otherwise requested, in the “Message” field: Pressing the "Bare Signature (Bitcoin QT Compatible)" button will create a signature which, together with the message, can be given as proof of control of an address.