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README.md

@@ -8,6 +8,10 @@ Gems:
 - [p2p](p2p)  - build your own peer-to-peer (p2p) networks; run your own peer-to-peer (p2p) nodes over HTTP
 
 
+<!-- break -->
+
+- [centralbank](centralbank)  - print your own money / cryptocurrency; run your own federated central bank nodes on the blockchain peer-to-peer over HTTP; revolutionize the world one block at a time
+- [tulipmania](tulipmania)  - tulips on the blockchain; learn by example from the real world (anno 1637) - buy! sell! hodl! enjoy the beauty of admiral of admirals, semper augustus, and more; run your own hyper ledger tulip exchange nodes on the blockchain peer-to-peer over HTTP; revolutionize the world one block at a time
 
 
 

centralbank/.gitignore

@@ -0,0 +1,70 @@
+###########
+#  cached / saved state / data
+
+data.json
+data.*.json
+
+
+
+##########
+#  ignore  Gemfile.lock for now
+
+Gemfile.lock
+
+
+####
+#  ignore sass cache
+.sass-cache
+
+
+
+*.gem
+*.rbc
+/.config
+/coverage/
+/InstalledFiles
+/pkg/
+/spec/reports/
+/spec/examples.txt
+/test/tmp/
+/test/version_tmp/
+/tmp/
+
+# Used by dotenv library to load environment variables.
+# .env
+
+## Specific to RubyMotion:
+.dat*
+.repl_history
+build/
+*.bridgesupport
+build-iPhoneOS/
+build-iPhoneSimulator/
+
+## Specific to RubyMotion (use of CocoaPods):
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+# vendor/Pods/
+
+## Documentation cache and generated files:
+/.yardoc/
+/_yardoc/
+/doc/
+/rdoc/
+
+## Environment normalization:
+/.bundle/
+/vendor/bundle
+/lib/bundler/man/
+
+# for a library or gem, you might want to ignore these files since the code is
+# intended to run in multiple environments; otherwise, check them in:
+# Gemfile.lock
+# .ruby-version
+# .ruby-gemset
+
+# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
+.rvmrc

centralbank/Dockerfile

@@ -0,0 +1,9 @@
+FROM ruby
+
+RUN mkdir /centralbank
+WORKDIR /centralbank
+COPY . /centralbank/
+RUN bundle install --quiet
+EXPOSE 9292 
+CMD [ "rackup", "--host", "0.0.0.0", "-p", "9292"]
+

centralbank/Gemfile

@@ -0,0 +1,7 @@
+# Gemfile
+
+source "https://rubygems.org"
+
+gem 'sinatra'
+gem 'sass'
+gem 'blockchain-lite'

centralbank/HISTORY.md

@@ -0,0 +1,3 @@
+### 0.1.0 / 2017-12-14
+
+* Everything is new. First release.

centralbank/Manifest.txt

@@ -0,0 +1,26 @@
+HISTORY.md
+LICENSE.md
+Manifest.txt
+README.md
+Rakefile
+bin/centralbank
+lib/centralbank.rb
+lib/centralbank/bank.rb
+lib/centralbank/block.rb
+lib/centralbank/blockchain.rb
+lib/centralbank/cache.rb
+lib/centralbank/ledger.rb
+lib/centralbank/node.rb
+lib/centralbank/pool.rb
+lib/centralbank/service.rb
+lib/centralbank/tool.rb
+lib/centralbank/transaction.rb
+lib/centralbank/version.rb
+lib/centralbank/views/_blockchain.erb
+lib/centralbank/views/_ledger.erb
+lib/centralbank/views/_peers.erb
+lib/centralbank/views/_pending_transactions.erb
+lib/centralbank/views/_wallet.erb
+lib/centralbank/views/index.erb
+lib/centralbank/views/style.scss
+lib/centralbank/wallet.rb

centralbank/NOTES.md

@@ -0,0 +1,35 @@
+# Notes
+
+
+## Todos
+
+- [ ] add favicon.png  - why? why not? (see webservice gem)
+- [ ] add a Pool class (for pending transaction pool) !!!!!
+- [ ] add secure versions with signature e.g. SecureWallet, SecureTransaction, etc.
+
+```
+Source: https://www.reddit.com/r/ruby/comments/7ly337/day_24_ruby_advent_calendar_2017_centralbank/
+
+I'm playing with your Ruby blockchain stuff. It's very good. It's giving me a way to learn it without having to learn Go or C++ at the same time. But...
+
+When I try running central bank from the command line as described in blockchains section 6. using
+
+centralbank
+it doesn't work because centralbank is in the bin/ directory, so I tried (after setting chmod +x etc)
+
+bin/centralbank
+and then got an error I've never seen before
+
+env: ruby\r: No such file or directory
+So I wrote added one space at the end of the shebang header line That removed the extra \r and I then progressed to
+
+bin/centralbank
+Traceback (most recent call last):
+     (LoadError)h file or directory --
+Because it doesn't know where the library path is. If I run with
+
+  ruby -Ilib bin/centralbank
+Then it's fine.
+
+So you need to do something to remove that \r at the end of the shebang line, and add the library path before the require.
+```

centralbank/README.md

@@ -0,0 +1,118 @@
+# centralbank library / gem and command line tool
+
+print your own money / cryptocurrency; run your own federated central bank nodes on the blockchain peer-to-peer over HTTP; revolutionize the world one block at a time
+
+
+* home  :: [github.com/openblockchains/centralbank](https://github.com/openblockchains/centralbank)
+* bugs  :: [github.com/openblockchains/centralbank/issues](https://github.com/openblockchains/centralbank/issues)
+* gem   :: [rubygems.org/gems/centralbank](https://rubygems.org/gems/centralbank)
+* rdoc  :: [rubydoc.info/gems/centralbank](http://rubydoc.info/gems/centralbank)
+
+
+## Command Line
+
+Use the `centralbank` command line tool. Try:
+
+```
+$ centralbank -h     
+```
+
+resulting in:
+
+```
+Usage: centralbank [options]
+
+  Wallet options:
+    -n, --name=NAME                  Address name (default: Alice)
+
+  Server (node) options:
+    -o, --host HOST                  listen on HOST (default: 0.0.0.0)
+    -p, --port PORT                  use PORT (default: 4567)
+    -h, --help                       Prints this help
+```
+
+To start a new (network) node using the default wallet
+address (that is, Alice) and the default server host and port settings
+use:
+
+```
+$ centralbank
+```
+
+Stand back ten feets :-) while starting up the machinery.
+Ready to print (mine) money on the blockchain?
+In your browser open up the page e.g. `http://localhost:4567`. Voila!
+
+![](centralbank.png)
+
+
+
+Note: You can start a second node on your computer -
+make sure to use a different port (use the `-p/--port` option)
+and (recommended)
+a different wallet address (use the `-n/--name` option).
+Example:
+
+```
+$ centralbank -p 5678 -n Bob
+```
+
+Happy mining!
+
+
+
+## Local Development Setup
+
+For local development - clone or download (and unzip) the centralbank code repo.
+Next install all dependencies using bundler with a Gemfile e.g.:
+
+``` ruby
+# Gemfile
+
+source "https://rubygems.org"
+
+gem 'sinatra'
+gem 'sass'
+gem 'blockchain-lite'
+```
+
+run
+
+```
+$ bundle       ## will use the Gemfile (see above)
+```
+
+and now you're ready to run your own centralbank server node. Use the [`config.ru`](config.ru) script for rack:
+
+``` ruby
+# config.ru
+
+$LOAD_PATH << './lib'
+
+require 'centralbank'
+
+run Centralbank::Service
+```
+
+and startup the money printing machine using rackup - the rack command line tool:
+
+```
+$ rackup       ## will use the config.ru - rackup configuration script (see above).
+```
+
+In your browser open up the page e.g. `http://localhost:9292`. Voila! Happy mining!
+
+
+
+
+## References
+
+[**Programming Cryptocurrencies and Blockchains (in Ruby)**](http://yukimotopress.github.io/blockchains) by Gerald Bauer et al, 2018, Yuki & Moto Press
+
+
+## License
+
+![](https://publicdomainworks.github.io/buttons/zero88x31.png)
+
+The `centralbank` scripts are dedicated to the public domain.
+Use it as you please with no restrictions whatsoever.

centralbank/Rakefile

@@ -0,0 +1,32 @@
+require 'hoe'
+require './lib/centralbank/version.rb'
+
+Hoe.spec 'centralbank' do
+
+  self.version = Centralbank::VERSION
+
+  self.summary = 'centralbank - print your own money / cryptocurrency; run your own federated central bank nodes on the blockchain peer-to-peer over HTTP; revolutionize the world one block at a time'
+  self.description = summary
+
+  self.urls    = ['https://github.com/openblockchains/centralbank']
+
+  self.author  = 'Gerald Bauer'
+  self.email   = '[email protected]'
+
+  # switch extension to .markdown for gihub formatting
+  self.readme_file  = 'README.md'
+  self.history_file = 'History.md'
+
+  self.extra_deps = [
+    ['sinatra', '>=2.0'],
+    ['sass'],   ## used for css style preprocessing (scss)
+    ['blockchain-lite', '>=1.3.1'],
+  ]
+
+  self.licenses = ['Public Domain']
+
+  self.spec_extras = {
+   required_ruby_version: '>= 2.3'
+  }
+
+end

centralbank/bin/centralbank

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+###################
+# == DEV TIPS:
+#
+# For local testing run like:
+#
+#    ruby -Ilib bin/centralbank
+#
+# Set the executable bit in Linux. Example:
+#
+#    % chmod a+x bin/centralbank
+#
+
+require 'centralbank'
+
+Centralbank.main

centralbank/config.ru

@@ -0,0 +1,11 @@
+### note: for local testing - add to load path ./lib
+##   to test / run use:
+##    $  rackup
+
+
+$LOAD_PATH << './lib'
+
+require 'centralbank'
+
+
+run Centralbank::Service