Blockchain is a technology based on which bitcoin and other cryptocurrencies have been invented. Every transaction is in this block chain. This is called public ledger, if you do Bangla, it becomes an open ledger. It is open to everyone. The majority of the nodes in this blockchain network (computers or special types of computer machines) have to agree if a transaction is to be matured and opened. There is also an algorithm (consensus algorithm) to agree on this.
Finally a complex mathematical problem has to be solved, which is called Proof of Work. Those who do it are called minor. The winner of the first solution is Bitcoin. Earlier it was 25 bitcoins, now it is 12.5 bitcoins. In a few days it will be halved, which is also a protocol of blockchain technology. Minors are voting to agree again. Numerous minors are working. This is why cryptocurrency transactions cannot be fraudulent or wrong. Anyone in the world can become a minor by joining this network by buying a reliable computer or machine with special power, and can even earn some money. The potential of this blockchain technology is immense. For example, if blockchain technology is used in home and land ownership, it will be impossible to forge ownership or deed. By keeping it in open ledger, everyone will know who owns which place
Nice project 👍