Blockchain explained in a very simple way.
Smart contracts were first released on Ethereum network. Other cryptocurrency networks, copied the smart contract functionality. So, it is important for the cryptocurrency user, to know about them.
Tokens in the ethereum ecosystem can represent any fungible tradable good: loyalty points, coins, IOUs, gold certificates, in game items, etc. Since all tokens implement some basic features in a standard way, this also means that your token will be instantly compatible with the ethereum wallet and any other client or contract that uses the same standards. This compatibility makes it easy for users to store it and use it, with an ethereum wallet.
Sonetimes, it is important to inform the other party, that we had sent the Bitcoins to the requested address. To do this you need to send the transaction ID. The other party, can search the blockchain, with a blockchain explorer, and see the transaction as it is recorded. He can see the from to addresses the amount, and if the transaction is confirmed.
Bitland is an experimental platform using decentralized, trustless models such as Bitcoin’s blockchain to bridge the gap between the government and the undocumented areas. The team is looking to move to a decentralized system in which users download an application which serves as a way to encrypt massive amounts of data and store the data on a public ledger of events. In the new system, the users will have more control over their data, and the public ledger will verify the integrity of records without sacrificing the privacy of users.