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No bitcoin, no blockchain
Publish: 2021-05-10 00:52:38
1. bitcoin blockchain is a bitcoin blockchain? No, the block stores the transaction. In the early stage, you will get a coin if you successfully build a block. In the later stage, you can only get the fees paid by the exchange. A currency is a string of digital signatures. It is a digital signature sent by the last owner to the receiver. Everyone can see who owns the currency from the transaction
does each node have complete blockchain data? You mean a user node? A user node needs to keep the of the block head of the longest workload proof chain, so it knows the data of all the block heads. It can move forward to know all the data on the block chain, but not all of them are saved. A block header is very small, only 80 bytes, which can be saved completely, because the generation of nodes is very slow. Even with the passage of time, the amount is not too large now.
does each node have complete blockchain data? You mean a user node? A user node needs to keep the of the block head of the longest workload proof chain, so it knows the data of all the block heads. It can move forward to know all the data on the block chain, but not all of them are saved. A block header is very small, only 80 bytes, which can be saved completely, because the generation of nodes is very slow. Even with the passage of time, the amount is not too large now.
2. With the advent of bitcoin, a new technology, blockchain, has come into the public view. What is the relationship between bitcoin and blockchain? The simplest understanding is: blockchain is the underlying technology of bitcoin, and bitcoin is the first generation application of blockchain. Therefore, we often see such a saying that "bitcoin represents the era of blockchain 1.0"
bitcoin is regarded as the first generation application of blockchain technology and the most thorough application of its code testing. However, without bitcoin, there might not be so many people who knew about blockchain now. It can be said that bitcoin has greatly improved the "exposure" of blockchain technology
later, people graally found that the application value of blockchain is far more than bitcoin, but can be applied to many instries to solve the pain points of many instries; The idea of blockchain can also provide a lot of reference for the financial field, which is the real reason for the outbreak of blockchain.
bitcoin is regarded as the first generation application of blockchain technology and the most thorough application of its code testing. However, without bitcoin, there might not be so many people who knew about blockchain now. It can be said that bitcoin has greatly improved the "exposure" of blockchain technology
later, people graally found that the application value of blockchain is far more than bitcoin, but can be applied to many instries to solve the pain points of many instries; The idea of blockchain can also provide a lot of reference for the financial field, which is the real reason for the outbreak of blockchain.
3.
blockchain technology is not only the underlying technology of bitcoin, but also the core and infrastructure of bitcoin bitcoin has been running without any centralized organization operation and management. Later, bitcoin technology was abstracted, which was called blockchain technology or distributed ledger technology
extended data:
disadvantages of blockchain technology applied to digital currency:
first, there is no circulation management organization for "decentralization" blockchain technology is essentially a distributed database system with one-way linked list logic structure and P2P network design mode, which determines that there is no unified central control system for virtual currency based on blockchain technology
Second, it is difficult to effectively control the quantity supply the circulation of virtual currency based on blockchain technology is fixed, and according to Fisher Equation, the total transaction volume of the whole society under a certain price level in a certain period has a certain proportion with the required nominal currency volume, while the constant currency volume obviously can not meet the requirements of the growing total price of social goods Thirdly, "mining mechanism" is difficult to create recognized value bitcoin itself has no value and no national credit support. Some people think that "by continuously consuming computing power and energy to inject value into virtual currency", but it is obviously not the most efficient choice to consume millions of calculations in order to find a hash value that meets the requirements Fourthly, procers and early holders are easy to get high seigniorage any virtual currency based on blockchain technology is held by a few people at the initial stage of its development. Take bitcoin as an example. At first, bitcoin was only a proct of a few people's game. The first bitcoin purchase in May 2010 was $10000 BTC's purchase of $25 pizza. The first bitcoin transaction completed in July of the same year was $0.04/btc4. Building owners, different procts apply for different projects to provide different information
the information needed for RF is:
2 Sample (s) PCs 3-4 sets (complete set with accessories, frequency interval greater than 1m, need three prototypes of high, medium and low frequency launch and one common launch sample or fixed frequency software)
3 The technical specification includes the following contents:
a Frequency: indicate the frequency range or detailed frequency points
B Movement: working mode, such as FM, HFSS, DSSS, unps, GSM, CDMA, etc.
C Output power
4 User manual
5. BOM list of key components (PCB, wire, etc., UL file No.)
6 Block diagram (antenna should be provided, and the transmitting frequency should be marked at the antenna end)
8 Part layout
9 Circuit description is also called operational description
9. PCB silk screen diagram PCB laout diagram (printed wiring diagram)
10. Charger en60950 test report. En60950 report for adapter
11. Final hardware version, final software version
12. Engineering instruction BT of Bluetooth, WiFi molation for testing
13. Antenna specification (including gain, GSM, WiFi, BT, WCDMA antenna gain)
14, Need to provide cell specification)
15. UL cert for PCB board (flame retardant grade greater than or equal to V-1)
16. Doc countersigned / POA countersigned (when the report is completed)
if it is high-voltage procts, you need more information about key components of safety regulation!
the information needed for RF is:
2 Sample (s) PCs 3-4 sets (complete set with accessories, frequency interval greater than 1m, need three prototypes of high, medium and low frequency launch and one common launch sample or fixed frequency software)
3 The technical specification includes the following contents:
a Frequency: indicate the frequency range or detailed frequency points
B Movement: working mode, such as FM, HFSS, DSSS, unps, GSM, CDMA, etc.
C Output power
4 User manual
5. BOM list of key components (PCB, wire, etc., UL file No.)
6 Block diagram (antenna should be provided, and the transmitting frequency should be marked at the antenna end)
8 Part layout
9 Circuit description is also called operational description
9. PCB silk screen diagram PCB laout diagram (printed wiring diagram)
10. Charger en60950 test report. En60950 report for adapter
11. Final hardware version, final software version
12. Engineering instruction BT of Bluetooth, WiFi molation for testing
13. Antenna specification (including gain, GSM, WiFi, BT, WCDMA antenna gain)
14, Need to provide cell specification)
15. UL cert for PCB board (flame retardant grade greater than or equal to V-1)
16. Doc countersigned / POA countersigned (when the report is completed)
if it is high-voltage procts, you need more information about key components of safety regulation!
5. At present, there are many such teams, and the blockchain is suitable for all walks of life, but before the early cooperation, we must pay attention to the team strength and effect. The baker chain blockchain that we understand has a good evaluation in the instry, good reputation and good performance in all aspects. The evaluation of the instry is quite high.
6. Bitcoin market can now be seen on professional software, such as the coin card I use now. I think it's very good. Most of the data are available and updated in a timely manner. I recommend you to download and use it
7. I will just say a few words to solve the relationship between the two, and the wordy answer is too unfriendly to Xiao users:
1. Blockchain is the core technology of bitcoin's original creation. Before bitcoin was invented, there was no blockchain in the world
2. After the invention of bitcoin, many people refer to the blockchain implementation in bitcoin and use similar technologies to realize various applications, which are collectively referred to as blockchain technology. Including the birth of all kinds of high-quality coins on the coin easy platform, it is the same reason
now the building owner will see if his questions are immediately clear.
1. Blockchain is the core technology of bitcoin's original creation. Before bitcoin was invented, there was no blockchain in the world
2. After the invention of bitcoin, many people refer to the blockchain implementation in bitcoin and use similar technologies to realize various applications, which are collectively referred to as blockchain technology. Including the birth of all kinds of high-quality coins on the coin easy platform, it is the same reason
now the building owner will see if his questions are immediately clear.
8. Many people have a misunderstanding that bitcoin is a blockchain, which is actually very wrong. Bitcoin is just an application of blockchain technology. Comparing blockchain to the Internet, bitcoin is just one of the apps, and the application scenario of blockchain is still very large. It is recommended to study and invest on the okex platform. Here is a tutorial for newcomers. I hope my answer can help you, take it
9. No, bitcoin was born at the end of 2008, and blockchain technology was well known 14 or 15 years later. It is the large-scale application of bitcoin that makes people pay attention to the underlying technology of blockchain. If you are interested in bitcoin, you can go to the okex exchange to open an account and make a fixed investment when you have spare money. Thank you for adopting and approving my reply
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