A blockchain is simply blocks containing data. Each block contains the sha256 file summary of the previous block. Therefore, the data is secured in the chain. Nobody interrupts the data. It is basically a technology developed for security purposes. Blockchain is used in crypto coins and many more applications.
Simply blockchain is a text-based, network-secured database.
Blockchain is popularly used in crypto coins. For example, in Bitcoin, processes are collected in a block every ten minutes. Then, it connects to the previous blocks. This process continues continuously. Crypto money mining is the process in which a block is approved. This involves miners in the network to solve a mathematical problem. The first miner who solves the problem is rewarded with crypto money.
Once the block is approved and added to the network, the entire network is replicated and saved. Blockchain is a self-running system that confirms non-human intervention.
01000000 - version 0000000000000000000000000000000000000000000000000000000000000000 - prev block 3BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A - merkle root 29AB5F49 - timestamp FFFF001D - bits 1DAC2B7C - nonce 01 - number of transactions 01000000 - version 01 - input 0000000000000000000000000000000000000000000000000000000000000000FFFFFFFF - prev output 4D - script length 04FFFF001D0104455468652054696D65732030332F4A616E2F32303039204368616E63656C6C6F72206F6E206272696E6B206F66207365636F6E64206261696C6F757420666F722062616E6B73 - scriptsig FFFFFFFF - sequence 01 - outputs 00F2052A01000000 - 50 BTC 43 - pk_script length 4104678AFDB0FE5548271967F1A67130B7105CD6A828E03909A67962E0EA1F61DEB649F6BC3F4CEF38C4F35504E51EC112DE5C384DF7BA0B8D578A4C702B6BF11D5FAC - pk_script 00000000 - lock time
Above is the first block of the Bitcoin blockchain (genesis block) produced by the inventor of Bitcoin Satoshi Nakamoto. He’s got 50 BTC crypto money on his account.