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dogecoin / libdohj

Java library for adding altcoin support to bitcoinj
Apache License 2.0
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How did you get the hash of Nintondo as 04ffff001d0104084e696e746f6e646f? #33

Closed commentors-net closed 6 years ago

commentors-net commented 6 years ago

In class org.libdohj.params.AbstractDogecoinParams.java, method createGenesis, the byte array of string "04ffff001d0104084e696e746f6e646f" is retrieved. In dogecoin code, it is pszTimestamp, which is Nintodo, while in java during decode, I get Nintodo but prefix with some funny charatcters. Could you please update me as how did you get "04ffff001d0104084e696e746f6e646f" from Nintondo? It would be great because I am trying to extend this feature for my test project as proof of concept of porting c++ crypto to java code.

Thank you.

rnicoll commented 6 years ago

So that value is the script input, which includes Nintondo but also some extra parts to make it an input. In Dogecoin Core it's built in the line: https://github.com/dogecoin/dogecoin/blob/master/src/chainparams.cpp#L106

Pretty certain what I actually did was to get the genesis block from the Dogecoin Core RPC interface and pulled out the value it contained, rather than rebuilding it from scratch.