Columbia University Engineering, New York FinTech Bootcamp

August 2022 Cohort

Module 18, Challenge - building a blockchain-based ledger system, complete with a user-friendly web interface

Objective - to simulate fintech engineer working at a a major global bank.

Scenario - As the lead developer of the decentralized finance team, build a blockchain-based ledger system, complete with a user-friendly web interface. This ledger should allow partner banks to conduct financial transactions (that is, to transfer money between senders and receivers) and to verify the integrity of the data in the ledger. Product -

Create a new data class named Record. This class will serve as the blueprint for the financial transaction records that the blocks of the ledger will store.

Change the existing Block data class by replacing the generic data attribute with a record attribute that’s of type Record.

Create additional user input areas in the Streamlit application. These input areas should collect the relevant information for each financial record that you’ll store in the PyChain ledger.

Create additional user input areas in the Streamlit application. These input areas should collect the relevant information for each financial record that you’ll store in the PyChain ledger.

Technologies

Dependencies

This project leverages Python version 3.9.13 packaged by conda-forge | (main, May 27 2022, 17:01:00) with the following packages:

sys - module provides access to some variables used or maintained by the interpreter and to functions that interact strongly with the interpreter.
os - module provides a portable way of using operating system dependent functionality.
platform - used to retrieve as much possible information about the platform on which the program is being currently executed.
watermark - An IPython magic extension for printing date and time stamps, version numbers, and hardware information.
streamlit - an all python, free, open source module that enables rapid transformation of data scripts into shareable web apps.
dataclasses - provides a decorator and functions for automatically adding generated special methods.
typing - provides runtime support for type hints.
datetime - module supplies classes for manipulating dates and times.
pandas - software library written for the python programming language for data manipulation and analysis.
hashlib - Secure hash and message digest algorithm library.

Hardware used for development

MacBook Pro (16-inch, 2021)

Chip Appple M1 Max
macOS Venture version 13.0.1

Development Software

Homebrew 3.6.11

Homebrew/homebrew-core (git revision 01c7234a8be; last commit 2022-11-15)
Homebrew/homebrew-cask (git revision b177dd4992; last commit 2022-11-15)

Python Platform: macOS-13.0.1-arm64-arm-64bit

Python version 3.9.15 packaged by conda-forge | (main, Nov 22 2022, 08:52:10)
Scikit-Learn 1.1.3
pandas 1.5.1
Numpy 1.21.5

pip 22.3 from /opt/anaconda3/lib/python3.9/site-packages/pip (python 3.9)

git version 2.37.2

Installation of application (i.e. github clone)

In the terminal, navigate to directory where you want to install this application from the repository and enter the following command

git clone git@github.com:Billie-LS/de_cent_fin_chain_my_block.git

Usage

In the terminal, navigate to the project folder where you've installed the application; run the streamlit application by using streamlit run pychain.py:

> streamlit run pychain.py

Version control

Version control can be reviewed at:

https://github.com/Billie-LS/de_cent_fin_chain_my_block

repository

Author

Loki 'billie' Skylizard LinkedIn @GitHub

BootCamp lead instructor

Vinicio De Sola LinkedIn @GitHub

BootCamp teaching assistant

Santiago Pedemonte LinkedIn @GitHub

Additional references and or resources utilized

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Billie-LS / de_cent_fin_chain_my_block