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blockchain - [ IRIS python ]

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Save your logs in a blockchain structure

What's new in this version

Save your logs in a blockchain structure

You can create a class that Extends dc.Persistent Long Abstract

After any change in the registry, it will be saved in ^GBlockchainLog(, )

blockchain IRIS - ( Embedded Python )

Example of creating a financial blockchain Using Embedded Python on IRIS Data Platform

What is a blockchain

Blockchain is a chain of blocks, where each block contains information from the previous block, this concept can be applied in many ways.

What is a blocks?

Block will be composed of: a datetime, index, content, hash and the hash of the previous block.

In this project the blocks are constructed by:

  1. index:
    • block identification index in the chain
  2. timestamp:
    • block creation datetime
  3. transactions:
    • Financial transactions that are part of this block, represents the content of the block, you can change the structure by changing the dc.Blockchain.Blockchain classmethod newTransaction
  4. hash:
    • the entire contents of the encrypted block
  5. nonce:
    • value that the system finds by the mining process, changing the hash value when the block is generated.
  6. previousHash:
    • hash of the previous block

Prerequisites

Make sure you have git and Docker desktop installed.

Installation

Clone/git pull the repo into any local directory

$ git clone https://github.com/Davi-Massaru/blockchain_Iris_python.git

Open the terminal in this directory and run:

$ docker-compose build && docker-compose up -d

Run the endpoint curl http://localhost:52773/api/blockchain/ping to verify the connection to the server

Get Started

After installing the application, you can access the end-points to better understand how it works

  1. http://localhost:52773/api/blockchain/chain [ GET ]

Returns the current state of blockchain

Response sample:

  1. http://localhost:52773/api/blockchain/transactions/new [ POST ]

Add a new transaction to be computed in a block, and return which block the transaction will be added

Request Content:

{
	"sender": "user 1",
	"amount": 1.42,
	"recipient": "user 2"
}

Response sample:

  1. http://localhost:52773/api/blockchain/mine [ GET ]

Start mining a new block that will be added to the chain, returns added block information

Response sample:

  1. http://localhost:52773/api/blockchain/block/{index} [ GET ]

Returns block information, in the given index

Response sample:

Exploring the blockchain

You can better understand and track global content and transactions through the portal.

Access http://localhost:52773/csp/sys/exp/UtilExpGlobalView.csp?$ID2=GBlockchain&$NAMESPACE=USER&$NAMESPACE=USER to see all blockchain content.

Access http://localhost:52773/csp/sys/exp/UtilExpGlobalView.csp?$ID2=GTransactions&$NAMESPACE=USER&$NAMESPACE=USER to see all transactions made and in which blocks were mined

References:

Made with
Version
1.0.104 Feb, 2023
Category
Technology Example
Works with
InterSystems IRISInterSystems IRIS BI
First published
21 Feb, 2022
Last checked by moderator
27 Jun, 2023Works