Nick Gheorghita njgheorghita

Open Source Contribution, Mod 4

debug_traceTransaction - testRPC & web3.js

Why: I started working on this contribution as my personal project in mod3. Turns out I bit off more than I could chew at the time. I'd estimate I'm about 50% of the way through completing this contribution.
What: A debugger for transactions performed on the testRPC test ethereum blockchain. This feature is implemented in other clients, but not yet for testRPC.
I Need: to continue hacking my way through this problem. I understand the problem fully now, have written some code, and am currently debugging my way through the function call.

Blockchain Resources

Here are some resources for learning about solidity/ethereum/blockchain tech. This world is evolving and growing very rapidly, so feel free to add any resources you find useful.

General

r/ethereum

my favorite place to stay up to date on the happenings in the ethereum world
discussions are mostly focused on the tech rather than currency speculation

Coindesk

probably the best resource for daily news in the crypto-world (bitcoin, ethereum, etc)

Corda - Notes of perceived importance from docs.

Corda Shell

Embedded command line that allows an admin to control & monitor the node
- invoking rpcs the node exposes to applications
- starting flows
- view a dashboard of threads, heap usage, vm properties
- uploading and downloading zips from attachments
- issue sql queries to underlying database
flow list command used to list flows understood by node

Trade Finance Cordapp Outline

Seller SME -> S // Buyer SME -> B // Seller Bank -> SB // Buyer Bank -> BB

Assumptions

simplify dlt as much as possible. time is better spent on frontend as per Rashi.
since we're using api calls & security is out of scope, do we need / want authentication on who can update? how?
exact status terms are not finalized!
two flows (proposeTradeTxFlow & updateTradeTxFlow) keeps it simple.
move bank identities to model?

A proposal to establish an ethereum-specific practice within the Accelerator.

Why are so many companies exploring ethereum?

Why should you be worried about being left behind?

What separates ethereum from the other ecosystems?

Having a single blockchain practice is like having a single internet practice. It's such a wide umbrella that you need to explore the niches?

KEY RESOURCES

https://www.reddit.com/r/ethereum https://www.reddit.com/r/ethereum/comments/77gytn/welcome_to_rethereum_the_reddit_frontpage_of_the/

Solidity Docs http://solidity.readthedocs.io/en/develop/

Truffle Docs http://truffleframework.com/docs/

https://rsdlt.github.io/posts/rust-nvim-ide-guide-walkthrough-development-debug/

custom mapping to toggle showcursorline and showcursorcolumn

ctrl + u

show git diff between current file state and saved state

:w !diff % -

repeat your last edit

.

	def preprocess_code(code):
	o = 0

	i = 0
	pushcache = {}
	code = code + b'\x00' * 32
	while i < len(code) - 32:
	codebyte = safe_ord(code[i])
	if codebyte == 0x5b:
	o \|= 1 << i

	Bookchain todo:

	As a user, i want to scan a qr, enter my info, and checkout the book.
	As a user, i want to see an index of all books & status.
	As a librarian, i want to add a book.
	As a user with a checked out book, i want to return the book? (confirm w/ slack)

	L&L:

	Ethan:

	?s for Jon

	- Have y'all explored Blockchain tech at all?
	- What are some possible applications that you've seen a need for in the microfinance/microcredit world?
	- Other inefficiencies in the mf/mc world?
	- Insights into how mpesa took off? How/why was it adopted so quickly? Could it happen again w/ blockchain (<<< 6% interest)?


	jon notes
	- biz dev w/ banks & mfis is expensive and long