What is Blockchain and how to do your own

Understanding blockchain with money

What a blockchain does

1. It's distributed, decentralized
2. Verifies the order
3. Verifies the genuinity

Some examples

1. Economics: Currency transactions
2. Legal: Smart contracts
3. Logistic: Keeps track of delivery processes
4. Energy: Running a neighborhood energy grid

Why would we need a blockchain

1. Keep a ledger between peers
2. Share a energy/resources use/production records
3. Stablish a common channel between organizations

The components

1. The block
2. The chain

The Block: ingredients

1. Index number
2. Timestamp

3. Previous hash

4. The data

The Chain: constraints

1. Indexes must be adyacent
2. Timestamps must be sequential

3. Previous hash mush match own block copy

Time to work, get some code

                    $ git clone -b kata https://github.com/Edorka/blockpy.git
                    

So, idoneous projects

1. Require high scalability
2. Peers are not necesary trustfull
3. There are no arbiters
4. Transparency is valuable