0237a504c4
P2P full-block by-hash retrieval wasn't verifying that the received block had a header whose hash matched the requested hash. This probably made it trivially easy to falsify name records, since any internally valid block supplied by a malicious P2P peer (or a MITM attacker) would be accepted, and the name transactions in it trusted as valid, even if the block had (for example) minimum difficulty. The REST Merkle API is unaffected. There's a reason I haven't deployed libdohj-namecoin to end users yet; this is that reason. Review takes time.
Welcome to libdohj
The libdohj library is a lightweight wrapper library around the bitcoinj Java library, enabling support for Dogecoin (pull requests for support for other altcoins would be welcomed).
Getting started
To get started, it is best to have the latest JDK and Maven installed. The HEAD of the master branch contains the latest development code.
You should be familiar with bitcoinj first, as this library simply adds minor
changes to extend bitcoinj. Generally using libdohj is equivalent to using
bitcoinj, except with different network parameters (reflecting Dogecoin consensus
in place of Bitcoin).
Be aware however that altcoin blocks have their own class, AltcoinBlock, which adds support for features such as AuxPoW.
Building from the command line
To perform a full build use
mvn clean package
You can also run
mvn site:site
to generate a website with useful information like JavaDocs.
The outputs are under the target directory.
Building from an IDE
Alternatively, just import the project using your IDE. IntelliJ has Maven integration built-in and has a free Community Edition. Simply use File | Import Project and locate the pom.xml in the root of the cloned project source tree.