I know you are used to me making typos but not this time its really called Spedn :)

The website - https://spedn.readthedocs.io/en/latest/ if you wanna try it a bit

And here is base usage.

Intsall Haskell Tool Stack.

Download Spedn sources.

$ git clone https://bitbucket.org/o-studio/spedn.git
Build and install Spedn.

$ cd spedn/spedn
$ stack install
Your first contract
Create a file mycontract.spedn with a following content:

contract ExpiringTip(Ripemd160 alice, Ripemd160 bob) {

challenge receive(Sig sig, PubKey pubKey) {
    verify hash160(pubKey) == bob;
    verify checkSig(sig, pubKey);
}

challenge revoke(Sig sig, PubKey pubKey) {
    verify checkSequence(7d);
    verify hash160(pubKey) == alice;
    verify checkSig(sig, pubKey);
}

}
Compile with command:

$ spedn compile -c mycontract.spedn
You should get a compiled contract template similar to this:

2 PICK TRUE EQUAL IF 3 PICK HASH160 OVER EQUALVERIFY (...)

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