Blockchain POS

1.

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

2. 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

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 cryptographic labs, the father of public key and winner of Turing prize. This lab is the best network security lab in the world.

4. 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

5.

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

6.

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

7. Now it's not uncommon to have two-dimensional code on eggs, but agricultural procts with ant blockchain traceability two-dimensional code can have more benefits. This two-dimensional code is to digitally sign the information of the commodity in the process of raw materials, proction, circulation, marketing and other processes by the corresponding entities, and attach a time stamp to write it into the blockchain, which can not be tampered with. It is also refined to the whole process of authentic traceability of one thing one code, which is convenient for consumers to scan and trace the source. It can be said that ant blockchain is making life better through technology.