Spedn — a smart contract language for BCH
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 (...)
BCH Markets
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And how can i trust this and when do one get to invest? @kingscrown
So who supports that language? Nchain/Bitcoin SV or Bitmain/Viabtc/Bitcoin ABC?
for now it just launched so has simple opcodes but later you should be able to use it on all. i think it was literally released today
Spedn quite different name
Whatever you are writing is wrong, nothing is wrong but we will not be able to trust Bitcoin on the right side because he can cheat also. I am not saying he will deceive.
He is doing fine, and I do not want to write this.
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