https://github.com/CryptoManiac/novacoin/commit/c0e8991ed1b482d0dab75f86e415fc63d1104d68

Cache scrypt hashes on disk
instead of recalculating every time. This policy is able to give us 10-20x startng speed up. User can disable caching with -fastindex=0 option.

Note that this commit makes blockindex code incompatible with old blockchain database files. You need to remove old blockchain files and syncronize with the network again.

Another changes:

1. Stake pooled keys are removed.

Happy new year, guys and ladies!

P.S. Builds will be published tomorrow.

Some examples of usage.

http://pastebin.com/vCjj8Ya6

• Key tree navigation (get a list of root nodes, move down from root to grand-grandchild);
• Node addition using a public and private derivation functions.

Continue reading →

https://github.com/CryptoManiac/novacoin/commit/def6e8bd0d036ba0c41d1d38654bb2b454b5e296

For somebody who like to perform experiments. Continue reading →

I suppose that deterministic keys generation feature will be ready for testing a few days later.

Some examples using incredibly experimental snapshot:

Continue reading →

1. Creation of public & private key trees using seed (unlocked wallet emulation):
http://pastebin.mozilla-russia.org/111069

2. Creation of public keys tree using master public key and master chain code (locked wallet emulation):
http://pastebin.mozilla-russia.org/111070

Features planned for 0.4.4.6+

• Deterministic wallets, i.e. keychains generation from seed (user supplied or automatically generated, see Electrum for example);
• Separated databases for keys and transactions, instead of wallet.dat; (Questionable)
• Add support for free transactions and decrease the price for 1kb (i.e. bitcoin-like fees scheme);
• Remove lower output value limit for user and coinstake transaction types;
• Add maxtxfee configuration option and RPC call;
• Include PoW block txfees into the PoW block reward (like bitcoin does, to make transactions handling more profitable in comparison with empty PoW block generation). (Questionable)

Explorer engine development is done. Web UI development is at very early stage:
http://explorer.novaco.in

Engine is written in pure C and doesn’t require novacoin client for working. This software will be published under GNU AGPL conditions.

New graphs available here http://charts.novaco.in

Coin Control merged into 0.4.4.5, testing build for win32 is available:

http://sourceforge.net/projects/novacoin/files/novacoin-0.4.4.5-nosetup-win32.zip/download

New p2pool release is planned for this weekend. It will start an independent shares chain due to some incompatible changes.

• Fee for coinbase isn’t required since 20 Sep 2013, so this code will be removed;
• ECDSA signature isn’t required for PoW blocks since 20 Sep 2013. This allows us to remove a few serious limitations, such as requirements for public node fee and wallet unlocking;
• -a option support, wallet address as worker name support;
• No truncation for rewards lower than 0.01 coin;
• 15s shares target spacing.

Successfully ported to ARM, so now you can build novacoind & novacoin-qt for Linux/ARM just like you do it for Linux on x86 platforms.

novacoin@raspberrypi ~/.novacoin $ /opt/novacoin/novacoind getinfo
{
    "version" : "v0.4.4.4-19-g928869d-beta",
    "protocolversion" : 60009,
    "walletversion" : 60000,
    "balance" : 0.00000000,
    "newmint" : 0.00000000,
    "stake" : 0.00000000,
    "blocks" : 41565,
    "timeoffset" : -28,
    "moneysupply" : 504308.93980800,
    "connections" : 16,
    "proxy" : "",
    "ip" : "109.188.124.39",
    "difficulty" : 292.45476415,
    "testnet" : false,
    "keypoololdest" : 1379090817,
    "keypoolsize" : 101,
    "paytxfee" : 0.01000000,
    "errors" : ""
}
novacoin@raspberrypi ~/.novacoin $ uname -a
Linux raspberrypi 3.6.11+ #474 PREEMPT Thu Jun 13 17:14:42 BST 2013 armv6l GNU/Linux
novacoin@raspberrypi ~/.novacoin $

Binaries tarball is available at sourceforge.

https://bitcointalk.org/index.php?topic=143221.msg3183214#msg3183214