If you are generally interested in the domain and want to get your hands dirty:
Being able to do 'Hello World`'s in the following techs:
* A simple contract on https://blockstream.com/2017/10/30/simplicity.html
* A simple contract on https://solidity.readthedocs.io/en/develop/
* A simple merchant app using one of the 3 implementations of http://lightning.network/
* A simple permissioned blochain on https://www.hyperledger.org/
;; Simulate message data specifying an administrator keyset.
;; In production use 'mockAdminKey' would be an ED25519 hex-encoded public key.
(env-data { "admin-keyset": ["mockAdminKey"] })
;; Simulate that we've signed this transaction with the keyset.
;; In pact, signatures are pre-validated and represented in the
;; environment as a list of public keys.
(env-keys ["mockAdminKey"])
;; Define the module.
(module helloWorld 'admin-keyset
"A smart contract to greet the world."
(defun hello (name)
"Do the hello-world dance"
(format "Hello {}!" [name]))
)
;; and say hello!
(hello "world")