Is there only bitcoin in blockchain

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.

2. First, open the Tencent Smart Security page
and then apply for Yudian terminal security system
and then use the Tencent Yudian to kill the virus

3. 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!

4. tolerable. The police have Internet experts. Besides, if you are cheated, you can only call the police and ask for their help. Personal point of view, for reference only.

5. Method 1: enter DFU mode when power on
connect the device to the computer with USB cable, and then you will hear the prompt sound that the computer has been connected successfully
please turn off the device first, and then you will hear the prompt that the computer is not connected successfully
first press and hold the power key to display the apple logo, and then press and hold the on / off key and the home key until the logo disappears. Continue to press and hold the power key for about 4-5 seconds, and continue to press and hold the home key until an iPhone in recovery mode is detected by iTunes (if successful, the iPhone should be in black screen). If redsn0w is used to detect, the device model in DFU will be displayed at the bottom of the interface< Method 2: enter DFU in any state (white apple or unlimited restart)
connect the device to the computer
Press and hold the on / off key and home key directly until the logo disappears. Just follow the above steps
method 3: do not press the key to enter the DFU (it is recommended to use the device with damaged key)
download the firmware of the device corresponding to the latest system version (do not use the firmware that Apple has closed for verification)
Download redsn0w and enter extra even more DFU IPSW in turn
at this time, redsn0w will prompt you that this is the operation of making DFU firmware, not the normal operation of restoring the system. The choice is
after selecting the latest official firmware, redsn0w will start making DFU firmware and wait for completion
Open iTunes, close redsn0w, shift + restore (for Mac, please use option + restore) and select the DFU firmware (prefixed with enter)_ DFU), wait for error 37 in the recovery process. At this time, the device is already in DFU mode.

6.

On March 19, trump signed an executive order to prohibit U.S. citizens and entities or indivials and entities in the United States from participating in digital currency transactions concted by the Venezuelan government or its agents. The executive order came into effect at noon on March 19

since the second half of 2017, the United States has repeatedly imposed sanctions on Venezuela e to the holding of the constituent assembly election and other reasons, expanded personal economic sanctions on current and former senior officials of Venezuela, and prohibited U.S. financial institutions from participating in New debt and equity transactions between the Venezuelan government and state-owned Venezuelan oil companies, American institutions are prohibited from participating in the trading of some bonds issued by Venezuelan public sector

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.