chainbtccom

1.

blockchain is an important concept of bitcoin. It is essentially a disintermediated database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains the information of a bitcoin network transaction, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

the data on bitcoin blockchain, which we call the data on the chain, generally includes: bitcoin active address, new address, continuous active address, reactivated address, transaction volume on the chain, number of transactions on the chain, TSP, transaction transfer fee on the chain, large amount transfer, mining difficulty and other data

we generally query the data on some blockchains through the blockchain browser, Bitcoin's more commonly used blockchain browsers are:

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https://www.blockchain.com/explorer

https://blockexplorer.com/

https://insight.bitpay.com/

https://btc.com/

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more information about blockchain projects, blockchain investment, blockchain applications, blockchain celebrities, Little tiger in the chain: https://www.lianxiaohu.com/

2. Have you backed up the private key file corresponding to the address? Just back it up. No backup, no backup
Josn file.

3. I don't think this is very reliable. We must pay attention to it and be careful of being cheated

4. Hello
you can call the TV station's
so that no one will see it
although I can't call for you
I can promote it for you
do you need it?