Are Bitcoins legal?, It is legal to use bitcoin in the United States, and payments are subject to the same taxes and reporting requirements as any other currency. There is no physical bitcoin currency the way there is a dollar, euro or pound. ... Ledgers known as blockchains are used to keep track of the existence of bitcoin, Insurance Blockchain Guide, Insurance Guide
What is Blockchain and how does it work?, It works with Blocks, where as spreadsheet works with rows and columns. A block in a blockchain is a collection of... more