• Using NodeJS, Express, Nodemon (hot reload), Lodash
• Including tests with Mocha
• Including docker files

npm install : installs all needed packages for api to run

npm run dev : starts the api in development mode with hot reload

npm start : starts the api in prod mode

npm run test : runs all mocka tests

Each CSV file contains a subset of blockchain historical data

key fields: blockNumber, blockHash, from/addresses, to

key fields: number, hash

key fields: transactionHash, transactionIndex, blockhash, blockNumber, address, contract

key fields: transactionHash, transactionIndex, blockhash, blockNumber, address

list all transactions with pagination (30 results per page)

{GET} /transaction/list/:page_number?

Extra Info: If page number is empty, invalid (e.g. negative number or 0) or higher than the available pages that exist, then API redirects to 1 or last page number

Input:
  - page_number
  - sortBy (values: 'blockHash', 'blockNumber', 'from', 'to', 'hash', 'transactionIndex') [Optional]
  -	orderBy (possible values: 'asc', 'desc')  [Optional]

Returns:
  - Array of transaction objects found for specific page provided.

Fetch a single transaction

{GET} /hash/:hash

Extra Info: Get single transaction by hash number

Input:
  - Hash string
  
Returns:
  - data Object of transaction found for specific hash

{GET} /transaction/index/:index/blockhash/:blockhash

Extra Info: Get single transaction by index and blockhash numbers

Input:
  - Index number
  - Block Hash string
  
Returns:
  - data Object of transaction found for specific hash

{GET} /transaction/index/:index/blocknumber/:blockno

Extra Info: Get single transaction by index and block numbers

Input:
  - Index number
  - Block Number number
  
Returns:
  - data Object of transaction found for specific hash

Get the balance of a contract address, including ERC20 Smart contract balances

{GET} /balance/:contract/:address

Input:
  - Contract hash string
  - Address hash string
  
Returns:
  - object containing eth and erc20 balances

List transactions occurring between x & Y dates

{GET} /transactions/:from/:to

Input:
  - From timestamp
  - To timestamp
  
Returns:
  - data Array of transactions found for specific dates

Fetch details for a single block

{GET} /block/:input

Input:
  - Hash string or Block number
  
Returns:
  - data Object of data found for given block hash/number

Get the balance of an address

{GET} /balance/address/:address

Input:
  - Hash string
  
Returns:
  - object with info concerning the address

Fetch details of an address

{GET} /address/info/:address

Input:
  - Hash string
  
Returns:
  - object with info concerning the address