njgheorghita

MVP V1

Deliverable: Interact with any of the 8 contract types deployed on Escape V1.

As a user, who knows the name of a package, it's registry, and version (optional), 
I want to be ableto use this information to interact with the packaged contracts via web3 
(either by deploying new instances, or interacting with existing instances).

njgheorghita

stand-alone-pkg-with-inheritable-contract

package contains base contract(s)

i.e. owned

• manifest_version
• version
• package_name
• meta
• sources
  • "./contracts/owned.sol": "ipfs:// . . ."

njgheorghita

Does this project need the blockchain** ?

** I use the term blockchain here to also include DLT (Distributed Ledger Technology) like Corda and HyperLedger Fabric

Do the business process improvements from implementing blockchain provide at MINIMUM 10x - 100x benefit over using traditional technology (cutting costs - improving speed - etc) ?

• The complexity of working with this technology is often underestimated, it can be an arduous and buggy process. especially when integrating with existing systems. Unless the "trustlessness" of a blockchain/dlt generates this 10x - 100x benefit, it's better to opt for traditional tech stack.

I would say - with the complexity of this system [manufacturers, wholesalers, and VRS's working together], the data, speed, and *** a requirement *** to collaborate with many different parties the amount of data flowing around - It’s not guaranteed that blockchain/dlt provides this 10x-100x benefit.

njgheorghita

OPTIONS TO DISPLAY BLOCKCHAIN ACTIVITY

Etherscan

• Will show you tx receipt for any tx sent to a contract address
• Won't show you the current state of the contract - just a history of the txs sent to it and data abou those txs
• You can click on an individual tx to get more information about it
• rinkeby.etherscan.io/address/<put_contract_address_here>
  • i.e. https://rinkeby.etherscan.io/address/0x83ab93d00b2f57baa20be99d560c7025d12dd396

Remix IDE

njgheorghita

Ethereum (public)

Pros

• Best community / Most developed
• Can support a decentralized VRS

Cons

• HDA is probably not cool about a decentralized VRS

Quorum (private)

Pros

• EVM based (uses Solidity/Ethereum smart contracts)

njgheorghita

devp2p

Components

• Distributed Peer Table (DPT) / Node Discovery
• RLPx Transport Protocol
• Ethereum Wire Protocol (ETH) / Application Layer

RLPx v4

• v4 is currently the most widely used - (besides LES which uses v5)
• v5 adoption is coming soon (check felix lange's devcon video below)
• This summary based on geth implementation (~ 70% of ethereum nodes)

njgheorghita

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

• .

search for all words under cursor

njgheorghita

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/

njgheorghita

?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

njgheorghita

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: