Seminar projects proposals Fall 2017
نویسنده
چکیده
Introduced in 2009 in [6] bitcoin is one of the first decentralized currency. It’s called crypto-currency, since it uses cryptography to secure transactions and assets. Bitcoin operation is based on so-called public ledgers that can be shortly described as follows. Assume there are two parties Alice and Bob (as usual), such that Alice wants to buy something from Bob. Assume they both have wallets that are public. That is, we can trace transactions from one person to another. Let say that both Alice and Bob have 10B on their accounts. So, if Alice has to pay Bob 4B we know that Alice’s balance is 6B and Bob’s is 14B and everyone knows that now Bob can spend all his 14B. Since the information about wallets are public, money transfer can be reduced to Alice publicly announcing "I, Alice, pay Bob 4B.". However, because of various technical reasons, we need to aggregate such claims for the whole network. That is, if in the similar time there are other transactions than that between Alice and Bob, they should be taken together and confirmed. How this confirmation should be done is a major open problem in almost all modern crypto-currencies.
منابع مشابه
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تاریخ انتشار 2017