1. 1.
bitcoin 2, Ethereum: Ethereum is a kind of digital token of Ethereum, which is regarded as "bitcoin version 2.0". Using
blockchain technology different from bitcoin, "Ethereum" developers need to pay Ethereum (ETH) to support the operation of the application. Like other digital currencies, they can be traded on trading platforms. 3.
lettercoin: lettercoin (LTC, currency symbol:?) It is a kind of network currency based on "point-to-point" technology and an open source software project under MIT / X11 license. It can help users make instant payments to anyone in the world. 4. Dogcoin: dogcoin, known as "dogcoin / dogcoin", was born on December 8, 2013. Based on the crypt algorithm, dogcoin is the second largest
virtual currency in the world after bitcoin in terms of number of users. 5. Yuan Bao coin: Yuan Bao coin is a virtual
digital currency similar to bitcoin. The founder of yuanbaocoin is a group of bitcoin enthusiasts and the earliest supporters. However, after seeing the problem of bitcoin, he decided to do his best to develop an electronic currency suitable for Chinese people with the latest technology. 6. Diandiancoin: "ppcoin was pre released by sunny king on August 11, 2012 and officially released on August 19, 2012. Ppcoin's biggest innovation is that its
mining method combines POW workload proof and POS equity proof. POS mining method only needs ordinary computers and clients to process transactions and maintain network security, so as to achieve the purpose of energy saving and security. 7. Katecoin: katecoin (KTC for short) is a virtual P2P digital currency that can be used all over the world. Point to point transmission means a decentralized payment system. 8. Quark coin: Based on six encryption algorithms (black, BMW, groestl, JH, keccak, skein), 9 rounds of super secure hash operation of virtual currency, 3 rounds of application of random hash function, quark coin has unique technical specifications. 9. Infinity coin: Infinity coin (IFC) is a new digital currency, which has more circulation advantages than bitcoin, and fills the short board of bitcoin in the field of commercial circulation and promoting commercial operation. 10. Common coin: common coin, English name popular coin, short for POC, was born on March 7, 2014. The total POC is close to the world population (7.057 billion).
2. POW: full name of proof of work
pos: proof of stake
both of them are the consensus mechanism of blockchain and the bookkeeping method of digital currency
the difference is:
1. POW mechanism: workload proof mechanism, that is, the proof of workload, is the requirement that must be met when generating a new transaction information (that is, a new block) to be added to the blockchain. In the blockchain network based on workload proof mechanism, the ability of nodes to obtain the correct numerical solution to generate blocks by calculating the numerical solution of random hash hash is the specific performance of node computing power
POS mechanism: the proof of rights and interests requires the certifier to provide a certain amount of ownership of cryptocurrency. The operation mode of the proof of rights and interests mechanism is that when creating a new block, the miners need to create a "currency right" transaction, and the transaction will send some coins to the miners themselves according to the preset proportion. According to the proportion and time of token owned by each node, the equity proof mechanism reces the mining difficulty of nodes proportionally according to the algorithm, so as to speed up the speed of searching for random numbers
extended materials:
the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software and the P2P network on it were designed and released. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses the distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses the design of cryptography to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction
3. All are the underlying consensus algorithms of blockchain, power consumption of pow. The dpos used by EOS has 21 super nodes, but it's always bribed to vote, so now dpos is basically labeled as a centralized blockchain. I also think it's against the spirit of blockchain. Por consensus protocol is a new consensus mechanism proposed by Baker chain. It is hatched by Whitfield Diffie's cryptic labs, the father of public key and winner of Turing prize. This lab is the world's best network security lab, and Baker chain is the best network security lab in the world
4. All are the underlying consensus algorithms of blockchain, power consumption of pow. The dpos used by EOS has 21 super nodes, but it's always bribed to vote, so now dpos is basically labeled as a centralized blockchain. I also think it's against the spirit of blockchain. Por consensus protocol is a new consensus mechanism proposed by Baker chain. It is hatched by Whitfield Diffie's cryptographic labs, the father of public key and winner of Turing prize. This lab is the best network security lab in the world.
5. Xinhua Bookstore Zhengzhou book purchasing center
address: No.19, xitaikang Road, Jinshui District, Zhengzhou City
Jiefang Road Station on the second road - bus stop
passing buses: 67, B12, K802, k804, k808, k811, y807
6. Bus line: Metro Line 1, about 5.0km in total distance
1. Walk 790m from Zhengzhou Central Hospital to Tong Road Station
2. Take Metro Line 1, pass 3 stops, reach Medical College Station
3, walk 950m, reach Zhengzhou book purchasing center
bus line: Metro Line 1 → y804, about 5.4km in total distance
1 Walk about 790 meters from Zhengzhou Central Hospital to Tong Road Station
2, take subway line 1, pass 3 stops to Medical College Station
3, walk about 350 meters to Zhongyuan Road University Road Station
4, take y804 Road, pass 1 stop to university road Taoyuan Road Station
5, walk about 50 meters to Zhengzhou book shopping center
7.
bus line: y815 Road, about 5.2km
1. Walk about 150m from Huayuan road to Renmin Road Station in Zijingshan mountain
2. Take y815 Road, pass 6 stops to Taoyuan Road Station on University Road
3. Walk about 120m to Zhengzhou book shopping center
