Simple blockchain implementation in python:

• can hash in simple sha256
• can hash with a merkle tree hashing using sha256

Lib used :

• json
• hashlib
• time
• requests
• Flask
• uuid

Diagrams

Implementation diagram:

Block : represents the data
Blockchain : link the blocks together thanks to cryptographic function
Interface : API interface whick interacts with the blockchain ( creating transaction etc )

Basic execution diagram on run:

API Execution Diagrams

[POST] : /transaction/new
take 3 arguments:

• add1 : Adresse of the sender
• add2 : Adresse of the receiver
• amt : the amount to transfer

License

MIT