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Rommel Cavada. No Downloads. Views Total views. Actions Shares. No notes for slide. Contents 1. What is Bitcoin? Currency vs. Bitcoin 3. Bitcoin Expansion 4. Introduction to Cryptography 5. Simple Cryptocurrency 6.


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  7. Decentralization 7. Bitcoin Security 8. Bitcoin Economy 9. Development of Bitcoin Infrastructure 3. What Is Bitcoin? Cryptocurrency is a digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank. Bitcoin Expansion Source: Coupofy. Contents 7. Contents 8. SHA Fixed-input hash function Arbitrary input hash function SHA uses Merkle-Damgard transform to turn a fixed-length collision- resistant function into a hash function that accepts arbitrary length inputs.

    It takes bit input and produces bit outputs.

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    The block size is bit. Hash Pointers and Data Structures Hash Pointer is a pointer where some information is stored together with a cryptographic hash of the information. Whereas a regular pointer gives you a way to retrieve information, a hash poiter also gives you a way to verify that information hasn't changed. Types of Data Structure Block chain is a linked list of hash pointers.

    This allows us to append data into the end of the log. But if someone alters data that is earlier in the log we are going to detect it tamper-evident log. Types of Data Structure Merkle Tree: In a Merkle tree, data blocks are grouped in pairs and the hash of each of these blocks is stored in a parent node. The parent nodes are in turn grouped in pairs and their hashes stored one level up the tree. This continues all the way up the tree until we reach the root node.

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    Digital Signatures Main properties of digital signatures: Only you can make your signature, but anyone who sees it can verify that it's valid; The signature must be tied to a particular document; Unforgeability; ECDSA Decentralized identity management. Rather than having a central authority that you have to go in order to register as a user in a system, you can register as a user all by yourself.

    If you want a new identity, you can just generate one at any time, and you can make as many as you want. These identities are called addresses, in Bitcoin jargon. The secret key sk is kept privately and used to sign messages. Anyone with this key can verify your signature. It returns a boolean value, isValid, that will be true if sig is a valid signature for message under public key pk, and false otherwise.

    Example: Simple Cryptocurrency There are two rules for a simplified cryptocurrency: 1. A designated entity can create new coins whenever he wants and those newly created coins belong to the entity. Second rule is whoever owns a coin can transfer it on to someone else.

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    Transferring is done using cryptographic operations. Bank creates a statement "Pay this to Bank2", where "this" is a hash pointer that references the coin in question. And, as we saw earlier, identities are just public keys, so Bank2 refers to Bank2 public key. Payments data structure Centralized Currency Model CentralBank publishes history of all transactions that have heppened.

    To do this he uses a block chain, which is digitally signed by CentralBank. CentralBank digitally signs the final hash pointer, which represents this entire structure, and publishes the signature along with the block chain. In this model a transaction only counts if it is in the block chain signed by CentralBank. Each coin has a serial number within the transaction. So CreateCoin creates a bunch of new coins with different values and assigns them to people as initial owners.

    We refer to coins by CoinIDs. Canl rulet oyna butonuna t? The popularity of bitcoin as an international, digital currency has enabled a new economy to flourish in parallel to the existing traditional currency-based economy. While cryptocurrencies and bitcoin transactions continue to gain popularity, they have also enabled a new online arena for gambling, gaming, and lotteries through something called a bitcoin casino. What Are Bitcoin Casinos? It is licensed and regulated by Curacao eGaming and is being operated by Palau Holdings.

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    Once you go to the game library, you can see that each game has been rated by players. All players can submit their own ratings.

    Bitcoin, Blockchain ve Türev Uygulamalar - Levent Kurt ()

    Moreover, creating an account on CyberSpins is very quick and easy. Check out CyberSpins now to get the most entertaining online gambling experience. Cons: No live casino No telephone support. Though famous for its sportsbook, the casino offers hundreds of casino games, live dealer games, and dozens of online slots and some amazing 3D Slots from Betsoft.

    You also get to enjoy a lucrative bonus, and it not only supports BTC but also has 12 other different swift and safe ways to load and withdraw funds. Cons: Large fees for credit card deposit.

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    Siteye erisim sagladktan sonra siteyi sorun yasamadan kullanmaya ve kazanclar? Kucuk sayg? Bu tur faaliyetlerin eger yol ihtiyac? Mays bas? Another popular name in the industry of credible payment methods at an online casino with real money is EcoPayz.


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    The main goal of EcoPayz is to supply a reliable and safe substitute for traditional real money transfer variants over the net. It exploits the most innovative SSL encryption techs so that to back each and every payment fulfilled through EcoPayz. The signup and usage here are utmost straightforward. This online service makes it easy to accomplish transactions to casinos. Picking up the right payment method is a difficult task for people, who have never look attentively at its multiplicity.

    With technological progress changing even our way to pay.