Ethereum experiments
How to run
# session 1
$ cd network-1
$ ./create-private-network.sh
# session 2
$ cd network-2
$ ./create-private-network.sh
# session 3
$ cd network-1
$ truffle migrate --reset
$ truffle exec app.js
# session 4
$ cd network-2
$ truffle migrate --reset
$ truffle exec app.js