I just spent some time searching the internet for jewelers that sell small titanium dog tags with engraved QR codes. It's funny that I have gone full circle and coincidentally ended up back at the bitcoin forum.

I think the 1" stainless steel safe is a great idea and plan on making a purchase. I have one question though. Do you plan on or can you offer safes in any other materials like titanium or tungsten carbide?

Personally, a 1" titanium pendant with a titanium bail would be perfect. Maybe with encrypted private key on one side and plain QR code of bitcoin address on other

I am thinking of using the libccoin and picocoin code as the basis of an alternative currency I am developing.

More details here: https://bitcointalk.org/index.php?topic=399728.0

The main purpose of this alt currency is educational for me and to be a challenge to which I hope I can rise. I do not want to follow the same route as a lot of other alt currencies, cloning the bitcoin code and making a few minor changes. Not much can be learned from this.

Before I jump in and start writing code I would like an expert opinion. For the type of altcoin I intend to develop is libccoin/picocoin a good foundation to build upon or am I wasting my time? I know the picocoin code is not complete but that is part of the challenge I have set myself.

I was expecting a comment like this. Yes, I went a bit over the top with the Latin didn't I.  

I wanted sightly different names for related things and Latin with all it's noun cases and verb conjugations fits that requirement.  It may look like overkill when they are all listed together but I do not see end users using all of the modules and clients at the same time.

Another reason for choosing Latin is because it is a root for several European languages so the words will be familiar to more than just English speakers.

Latin also lends a certain gravitas. Oops, I did it again!

Heh, heh. Good one. I will update it immediately.

Ambitious yes. But, since Nummum is modular progress can be made in steps or in parallel. Also, I am not coming up with any new ideas, just drawing existing ones together. The code for Zerocoin, p2pool, Bitmessage, scrypt etc. exist in one form or other already.

The "numb-nuts" thing is almost intentional. Nummnet is easy to remember now isn't it?  
I used the same trick when deciding on a name for the Anonummum module (https://www.youtube.com/watch?v=8N_tupPBtWQ).

Bitcoin core developer Jeff Garzik had mentioned that he was going to complete the picocoin client over the holiday period but this has not happened. I am sure he is a very busy man. Nummum is forked from picocoin and it would have been nice to have a more complete starting point. Nonetheless, I have forked picocoin in it's current state and will keep a close eye on what Jeff does with picocoin in the future.

Today I am just floating my idea to see what kind of reception it receives. Tomorrow I start coding.

At the moment I have no team but I am very much open to the idea. If other developers think that this is a worthwhile endeavour they are most welcome to assist.

If people are going to be pushing innovative alts I'm pushing this one, https://bitcointalk.org/index.php?topic=399728.0.

Primarily but not exclusively educational. If Nummum proves to be practical for real world use, well and good.

Now that I have floated my ideas publicly I am open to others getting involved in the development also. We may learn from each other.

No, not even close.

Read original post:

Yes, I want to distance Nummum from the current copy'n'paste frenzy. That was one of the reasons I chose to fork picocoin. There were several other reasons also.

I wish to develop a modular and scalable ecosystem that is not a Jack of all trades, master of none

I meant PoW/PoS hybrid.

Now fixed in original post.

-

-

Nummum

Nummum is yet another alternative crypto-currency with code based on bitcoin core developer Jeff Garzik's libccoin and picocoin.

Nummum's main purposes are educational (for me) as well as experimental. All the better if it has some benefit for others too.

Nummum does not re-invent the wheel. It takes several working crypto-currency concepts and amalgamates them into a single modular and scalable solution.

It is very much a work in progress. Most of the features in the feature list have not yet been implemented (see TODO lists) so at the moment it is more of a wish list than a feature list.

All forms of contribution and constructive criticism are most welcome.

Key Features

• No pre-mining
• Built-in pseudo-anonymity as well as an ūber-anonymous module with Zerocoin-like functionality
• P2P pool mining module with p2pool-like functionality
• Messaging module similar to Bitmessage for messaging between addresses
• Coloured coin / token module
• P2P exchange module that uses the DML/chan feature of the messaging module to announce, discover and agree potential trades then set up trading contracts (needs more thought)
  See Trading across chains
• Gambling / betting module that uses the DML/chan feature of the messaging module to announce, discover, agree and settle wagers
• Ability to add other crypto-currencies as a module
• Ability to add tax module for governmental use
• Unlike bitcoin, which is the name of network, the protocol, the client and the currency unit (sometimes confusing when explaining to new users) Nummum has a slightly different name for each of these layers
• Reference client can operate as either a full-chain client or a header-only client (SPV mode)
  See Thin Client Security
• Reference client can optionally use a truncated block chain
• Initial block reward 255
• Gradual, non-linear decay of block reward
• Block reward never reaches 0. Starts at 255 then gradually reduces to and settles at 1 after ~51 years
• Ūber-anonymity incurs a larger fee
• Block interval 63 seconds
• Difficulty adjustment every block, calculated using a moving average
• Uses SHA-3 (SHAKE-512 instead of SHA-256 and RIPE-160)
• Uses scrypt
• Uses Proof of Work / Proof of Stake hybrid (maybe not, needs more thought)
• Currency units divisible to 9 decimal places
• Written as a C library (libnummum) with reference executables including a relay daemon (commeō), a Nummum client (nummus) and a messaging client (nūntius)
• Each module written as a C library

Definitions

https://en.wiktionary.org/wiki/nummus

• Nummum
  The protocol
  
  
• Nummnet
  The network
  
  
• nummus
  The reference command line client
  
  
• nummulus
  The reference GUI client
  
  
• Nummō (singular) & Nummī (plural)
  The currency units
  
  
• Currency Symbol
   # (Number / hash symbol)
  
  
• Currency Code
  NUM
  
  
• Anonummum
  The ūber-anonymous module of Nummum (https://www.youtube.com/watch?v=8N_tupPBtWQ)
  
  
• Numminas
  The P2P mining pool module of Nummum
  
  
• Nūntium
  The P2P messaging module of Nummum
  
  
• Exonummum
  The coloured coin / exonumia / token module of nummum
  
  
• Cambium
  The exchange module
  
  
• Bitcoinum
  The bitcoin module
  
  
• Āleārum
  The gambling and betting module
  
  
• Tribūtum
  The tax module where taxes may be deducted at transaction source
  
  
• commeō
  A reference relay daemon
  
  
• nūntius
  A reference command line messaging client
  
  
• nūntiō
  A reference messaging client GUI
  
  
• Codex
  The ledger / block database
  
  
• Cassifile
  The nummus and nūntius wallet and keystore
  
  
• Motto
  Nummus parit nummōs

Model


               +----------------+----------------+---------------+---------------+
               |                |                |               |               |
   Storage     |   Cassifile    |    Codex DB    |   Nūntī DB    |    Exo DB     |
               |    (wallet)    |    (blocks)    |  (messages)   |   (tokens)    |
               |                |                |               |               |
               +----------------+----+-----------+---------+-----+---------------+
               |                     |                     |                     |
   Software    |       nummus        |       nūntius       |       commeō        |
               |      (client)       |     (messenger)     |       (relay)       |
               |                     |                     |                     |
               +----+-----------+----+-----+------------+--+--------+------------+
               |    |           |          |            |           |            |
   Application |    | Anonummum | Numminas |  Nūntium   | Exonummum |  Cambium   |
               |    | (privacy) | (mining) |(messaging) |  (token)  | (exchange) |
               |    |           |          |            |           |            |
               |    +-----------+----------+------------+-----------+------------+
               |                                                                 |
   Protocol    |                             Nummum                              |
               |                                                                 |
               +-----------------------------------------------------------------+
               |                                                                 |
   Network     |                             Nummnet                             |
               |                                                                 |
               +-----------------------------------------------------------------+
               |                                                                 |
   Transport   |                            Internet                             |
               |                                                                 |
               +-----------------------------------------------------------------+


Calculations

The following calculations run from the bc command :


give the following results :

   Total nummī in existence after final reward reduction = 1069547264.999985588
   Time to final reduction to 1 nummō reward (years) = 51.283339378
   Total nummī rewarded per year when reward is 1 nummō = 500571.428571428
   Percentage of total nummī rewarded per year when reward is 1 nummō = .046802100
   

Source Code

https://github.com/Nummum/Nummum

Further Reading

http://nummum.github.io/Nummum