Hi
Even I know bitcoin for a long time but now I learning how to use blockchain on some platform like save data but many articles on the internet are just say about what is blockchain, how to create a blockchain base bitcoin source.
I just wondering
How to use blockchain to save data like an image?
How do we can use a private key to unlock an account on blockchain network?
Or can you share me some link talk about how to code a blockchain network or something like that?
thank you and have a nice day
Blockchains are not good to store images, at least not the bitcoin blockchain. The bitcoin blockchain is good at storing transactions.. that's all. Anything else is just a waste of resources.
To use a private key, you create a wallet, generate addresses, and send transactions and you are using your private key.
Jimmy Song has a good course on programing blockchain here:
http://programmingblockchain.com/Of course, you may want to improve on your english before you attempt to pass these courses. You can find information on coding in the blockchain field for free the internet anyway.