Blockchain 101 \ 4: Consensus
Blockchains are designed with decentralization in mind, operating as an digital ledger maintained by a distributed network of computer nodes. For this reason, blockchain technology allows for the creation of trustless economic systems where transparent and trustworthy financial transactions can be carried out without the need for intermediaries. Cryptocurrencies are being adopted as a viable alternative to traditional banking and payment systems, which rely heavily on trust.
Blockchain 101 \ 3: Cryptocurrency Wallet
In fact, cryptocurrency wallet or wallet is a tool you use to see your own cryptocurrencies, and interact with them by sending, receiving funds, and tracking balances.
Blockchain 101 \ 2: Terminology
My darling complains that she doesn't understand some articles because of many new terms, so I created a glossary of terms that she often encounter when learning about blockchain or participating in cryptocurrency trading here.
Blockchain 101 \ 1: What is Bitcoin?
Yesterday my darling looked straight into my eyes and said "Next year, I am going to invest in cryptocurrency". The way she said so seriously made me unable to refuse. I spent all night telling her my knowledge regarding blockchain, consensus, byzantine, and asymmetric cryptography... and realized one night is not enough. So I decided to write this series so she can read them many times ~~and not get rekt when investing~~.
Cryptography during the French and American wars in Vietnam (P.2)
In the Introduction we commented that a common view of the American war in Vietnam is that, despite overwhelming technological superiority, the Americans lost the war because the “hearts and minds” of the people were on the side of their opponents. In view of the assumed vast technological inferiority of the Vietnamese, it is somewhat surprising that in a crucial realm of military technology — communications security and signals intelligence — there was a type of symmetry between the two sides.
Cryptography during the French and American wars in Vietnam (P.1)
Does the history of cryptography during the French and American wars in Vietnam have any relevance to the concerns of people working in information security in the 21st century? The years 1945–1975 predate public key cryptography, predate DES, and hugely predate the internet. Nevertheless, there are several reasons why this story needs to be told in our time.
Quadratic voting
cost to the voter = (number of votes)². This formula creates a democratic mechanism for the community, helping people pay more attention to common issues.
Quadratic funding
Based on ideas of Quadratic Voting we can apply them in building a crowdfunding product by using Quadratic Funding. Let's find out how we can apply it .
ZKP in Digital signature algorithm
Going from the vague (proving interaction without revealing knowledge - ZKP) to then applying it to do something specific (digital signature) is really interesting! What is too obvious may only have finite value, what is mysterious may have unlimited potential value.