Vote on Bitcoin Issues.
Bitcoinocracy is a free and decentralized way to voice your opinion. Signed votes cannot be forged, and are fully auditable by all users.
The easiest way to buy Bitcoin and Ethereum.
Luno makes it safe and easy to buy, store and learn about digital currencies like Bitcoin and Ethereum in Bulgaria.
or download the Luno app now.
Global Bitcoin community.
Buy Bitcoin or Ethereum with.
EUR via SEPA Transfer.
The most user friendly and efficient platform.
Luno helps you buy Bitcoin and Ethereum in three easy steps.
Sign up for a free Luno Wallet on web, iOS or Android and go through our easy verification process.
Select your preferred deposit method like bank or credit card and deposit money into your Luno Wallet.
Buy Bitcoin or Ethereum.
People all over the world use Bitcoin to send money to friends and family or buy things online. It can be cheaper, faster and easier to use than ordinary money.
Like the internet, no single entity controls Bitcoin. It provides users with both transparency and privacy. It puts you back in control of your money.
Learn more about Bitcoin and Ethereum on our Learning Portal.
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Built for you.
People love our easy-to-use products. From local payment methods to customer support in many different languages, we make your Bitcoin experience the best one.
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How to Pay with Bitcoin and Bitcoin Cash.
Watch our guide below to learn how to get started with blockchain payments to BitPay merchants.
Get a wallet.
You can use any of these popular Payment Protocol compatible wallets to make secure, successful payments to BitPay merchants.
Move Bitcoin or Bitcoin Cash into your spending wallet.
For individuals in the United States, the BitPay app provides a simple integration with Coinbase allowing users to buy bitcoin directly from the app.
Exchanges and accounts do not send your bitcoin payments immediately, so they are not good for paying BitPay merchants. To use your Bitcoin or Bitcoin Cash, withdraw your Bitcoin or Bitcoin Cash from the exchange to a Payment Protocol compatible wallet before attempting to spend it.
Make a payment.
Making a blockchain payment is fast, convenient, and extremely secure.
Remember to send your payment during the 15-minute payment window. BitPay only guarantees the fixed BTC or BCH price for this time period. Do not send payments to expired invoices.
There are several ways to pay a BitPay invoice from your wallet.
Scan the QR Code.
If your wallet is on a different mobile device, you can scan this code to open the payment in your wallet. Your wallet will lock in with the correct receiving Bitcoin or Bitcoin Cash address and sending amount. Then make the payment.
Open in Wallet.
Send the Payment Manually.
Bitcoin and Bitcoin Cash Miner Fees.
Miner fees are the cost your wallet pays for the computing power which confirms transactions on the Bitcoin and Bitcoin Cash networks. Miner fees are not BitPay fees, and they cannot be refunded. These fees can be higher or lower depending on the number of transactions waiting to be confirmed on the Bitcoin or Bitcoin Cash networks.
Network Cost Fee.
BitPay provides tools and reporting for merchants to view successful payments and manage their own refunds in Bitcoin or Bitcoin Cash. If you would like a refund or need help in getting your order for a successful payment, please contact the merchant directly. They can initiate the refund process or help you get your purchase.
Remember that you will need to provide your BitPay invoice URL or your order ID for the merchant to assist you. Merchant refund policies differ, so please contact the merchant to discuss refund options.
The place to buy and sell Bitcoin with Rupiah.
With Indodax, you will be able to buy Bitcoin or other assets in less than an hour. We accept payment and deposit from any local bank in Indonesia.
Your account is protected with Multifactor Authentication, combination of e-mail and SMS verification with Google Authenticator pin requirement. These layers of security will guarantee that every transaction is signed and validated by no one other than yourself.
Rupiah deposit can be processed instantly and Rupiah withdrawal will only take one working day before the money arrives in your bank account. Every Bitcoin deposit or withdrawal is processed immediately and securely without delay.
With Bitcoin, miners use special software to solve math problems and are issued a certain number of bitcoins in exchange. This provides a smart way to issue the currency and also creates an incentive for more people to mine.
Bitcoin is Secure.
Bitcoin miners help keep the Bitcoin network secure by approving transactions. Mining is an important and integral part of Bitcoin that ensures fairness while keeping the Bitcoin network stable, safe and secure.
We Use Coins - Learn all about crypto-currency. Bitcoin News - Where the Bitcoin community gets news. Bitcoin Knowledge Podcast - Interviews with top people in Bitcoin.
Bitcoin Mining Hardware Comparison.
Bitcoin nodes use the block chain to distinguish legitimate Bitcoin transactions from attempts to re-spend coins that have already been spent elsewhere.
Bitcoin mining is intentionally designed to be resource-intensive and difficult so that the number of blocks found each day by miners remains steady. Individual blocks must contain a proof of work to be considered valid. This proof of work is verified by other Bitcoin nodes each time they receive a block. Bitcoin uses the hashcash proof-of-work function.
This both serves the purpose of disseminating new coins in a decentralized manner as well as motivating people to provide security for the system.
Producing a proof of work can be a random process with low probability, so that a lot of trial and error is required on average before a valid proof of work is generated. Bitcoin uses the Hashcash proof of work.
The Computationally-Difficult Problem.
The Bitcoin Network Difficulty Metric.