All posts by hashengineering

POS Wallets

Blackcoin Android Wallet App – Full Blockchain on Device

Source for wallet app:

Source for blackcoinj:

Peercoin Android Wallet App – Uses Centralized Server for Getting Transaction Info

On Google Play:

Android app on Github:
Peercoinj on Github:
Explorer on Github:
Peer4commit Project:

Donate: PHYsT4HACNAyjEou2x9ufopGKuRJJAfeYT


Family Tree of Android Wallets

Base Code

Bitcoin Wallet 3.00 and up

  1. Bitcoin Wallet 3.x
    • Zetacoin

    Bitcoin Wallet 4.x

Litecoin Wallet (Litecoin Dev Team) – Forked from Bitcoin Wallet 3.30

  1. Auroracoin
  2. Gaelcoin (HashEngineering consulted for Genesis Block configuration)

Dogecoin Wallet (langerhans) – Forked from Bitcoin Wallet 3.x

  • Reddcoin
  • Leafcoin
  • Dopecoin

Digitalcoin Wallet (HashEngineering) – Forked from Bitcoin Wallet 3.x and 4.x

  1. Franko [FGW] (HashEngineering)
    1. Megacoin [KGW] (HashEngineering)
      1. Vertcoin (broken at Lyra2 fork)
      2. Einsteinium (offline)
    2. Infinitecoin (HashEngineering)
    3. Earthcoin (HashEngineering consulted for Transaction Comments)
    4. Digibyte
    5. Quark (HashEngineering)
    6. Darkcoin [X11, DGW, DGW2, DGW3] (HashEngineering)
    7. Myriadcoin [Qubit, Groestl, Skein] (HashEngineering)
    8. GroestlCoin (Groestl 512 x 2) (HashEngineering)
    9. VegasCoin

digitalcoin Wallet now on Google Play

The digitalcoin Wallet now has been posted on Google Play.  Though we were the original developers of the digitalcoin Wallet (ported from Bitcoin Wallet 3.31, not the Litecoin Wallet), we were allowing the previous developer to take our code and publish it.  Recently we were asked to take over the development and maintenance of this wallet and it has now been published.

Quark Wallet?

A request was made for a Quark wallet.  After that we considered a SecureCoin wallet.  Both use the same six hash functions (blake*, bmw, groestl, jh, keccak* (SHA-3) and skein*).  Currently only three have existing Java code as far as we can tell.  If anyone knows about the other three hash functions, let us know.  At this point a Quark or SecureCoin Wallet is not possible.