In a simple words, blockchain is a immutable database or continuously growing record, called blocks. Each blocks are linked and secured using cryptography where each block contains hash of previous block. . A blockchain functions as a decentralized database that is managed by computers belonging to a peer-to-peer (P2P) network. Each of the computers in the distributed network maintains a copy of the ledger to prevent a single point of failure and all copies are updated and validated simultaneously. This makes blockchain technology more trustworthy. In past blockchain was commonly associated with digital currencies and bitcoins. Today, blockchain applications are being explored in many industries as a secure and cost-effective way to create and manage a distributed database and maintain records for digital transactions of all types.

In fact, there are only two ways to get a crypto currency without investments - airdrops and bounty. Do not even consider bitcoin cranes, just spend time. For airdrops and bounty, you need accounts in social networks, a small number of subscribers to start and a wallet for tokens ERC-20 standard, myetherwallet, for example. Sites for the search for airdrops: airdropalert.com, airdropking.io and others. Some selected airdrops periodically appear on our website: airdropmap.com. Also you can and should use search on this forum.