Wednesday, January 31, 2018

SECURTY OF COIN

What do I need to start mining?

In the early days of Bitcoin, anyone could find a new block using their computer's CPU. As more and more people started mining, the difficulty of finding new blocks increased greatly to the point where the only cost-effective method of mining today is using specialized hardware. You can visit BitcoinMining.com for more information.

Security

Is Bitcoin secure?

The Bitcoin technology - the protocol and the cryptography - has a strong security track record, and the Bitcoin network is probably the biggest distributed computing project in the world. Bitcoin's most common vulnerability is in user error. Bitcoin wallet files that store the necessary private keys can be accidentally deleted, lost or stolen. This is pretty similar to physical cash stored in a digital form. Fortunately, users can employ sound security practices to protect their money or use service providers that offer good levels of security and insurance against theft or loss.

Hasn't Bitcoin been hacked in the past?

The rules of the protocol and the cryptography used for Bitcoin are still working years after its inception, which is a good indication that the concept is well designed. However, security flaws have been found and fixed over time in various software implementations. Like any other form of software, the security of Bitcoin software depends on the speed with which problems are found and fixed. The more such issues are discovered, the more Bitcoin is gaining maturity.
There are often misconceptions about thefts and security breaches that happened on diverse exchanges and businesses. Although these events are unfortunate, none of them involve Bitcoin itself being hacked, nor imply inherent flaws in Bitcoin; just like a bank robbery doesn't mean that the dollar is compromised. However, it is accurate to say that a complete set of good practices and intuitive security solutions is needed to give users better protection of their money, and to reduce the general risk of theft and loss. Over the course of the last few years, such security features have quickly developed, such as wallet encryption, offline wallets, hardware wallets, and multi-signature transactions.

Wednesday, January 24, 2018

REFERENCE IMPLEMENTATION

Reference implementation

The first wallet program – simply named "Bitcoin" – was released in 2009 by Satoshi Nakamoto as open-source code.[15]Sometimes referred to as the "Satoshi client", this is also known as the reference client because it serves to define the bitcoin protocol and acts as a standard for other implementations.[67] In version 0.5 the client moved from the wxWidgets user interface toolkit to Qt, and the whole bundle was referred to as Bitcoin-Qt.[67] After the release of version 0.9, the software bundle was renamed Bitcoin Core to distinguish itself from the underlying network.[79][80] Today, other forks of Bitcoin Core exist such as Bitcoin XTBitcoin Unlimited,[41][81] and Parity Bitcoin.[82]

Sunday, January 21, 2018

DESIGN

Design

Blockchain

Number of unspent transaction outputs
The blockchain is a public ledger that records bitcoin transactions.[49] A novel solution accomplishes this without any trusted central authority: the maintenance of the blockchain is performed by a network of communicating nodes running bitcoin software.[9] Transactions of the form payer X sends Y bitcoins to payee Z are broadcast to this network using readily available software applications.[50] Network nodes can validate transactions, add them to their copy of the ledger, and then broadcast these ledger additions to other nodes. The blockchain is a distributed database – to achieve independent verification of the chain of ownership of any and every bitcoin amount, each network node stores its own copy of the blockchain.[51]Approximately six times per hour, a new group of accepted transactions, a block, is created, added to the blockchain, and quickly published to all nodes. This allows bitcoin software to determine when a particular bitcoin amount has been spent, which is necessary in order to prevent double-spending in an environment without central oversight. Whereas a conventional ledger records the transfers of actual bills or promissory notes that exist apart from it, the blockchain is the only place that bitcoins can be said to exist in the form of unspent outputs of transactions.[5]:ch. 5

Thursday, January 18, 2018

ISLAMIC COIN .COM


Charts

The Bitcoin ecosystem at a glance
Bitcoin.com Mining

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