I'm pretty sure it would be more efficient if you state your clear requirements rather than waiting proposals for a very ambiguous request.
Knowing your environment and budget would be a start, what are must have requirements, contract and support form.

Finally, since you're asking for a coding service, posting here might have been better: https://bitcointalk.org/index.php?board=52.0

That's a false statement, if the transaction was never confirmed he can still reuse the inputs again in another transaction.
The only reason I can think of for such transaction is to scam people by showing them the transaction is pending confirmations while it has no chance of being confirmed.

What type of projects are the investors interested in? I have a project in mind but the target customers are governments or big companies that want to increase transparency in their election/voting systems in an anonymous way.

Sorry for leaving the list to die guys, I was busy with stuff in real life. Hopefully I'll be able to re-organize it, and maybe put it in other formats such as PDF

Is it possible to run LBC on an offline machine and update it manually every week for example?? I know there would be some useless work will be done due to other clients searching the same space before my offline machine does it.
If so, how would I do that??

I don't believe it's possible to determine if hourly rate is better than a % for any new project, specially when there's no trust.
Lets say that you make a deal for 50-50 split, and the project yields 2BTC profits, why would a developer trust you to hold 1BTC for him?? how would the developer trust you to report the exact profits at first place?? too many ways a % can go wrong when dealing online without legally binding contracts.

If you're willing to pay plain flat price shoot me a PM (on site, or email only, no IM apps) to discuss the deal.

Shoot me a PM if you offer a flat crypto payment instead of equity. I do web dev with .Net core & Angular 4 mainly.

Would you mind sharing the reasons why you've picked those 2 frameworks ? I would suggest you switch front end to React to make porting it to mobile easier.

If you remove the gold signature then you've essential detached the piece of gold from blockchain, which means you won't be able to trade that gold any more (given that government enforces the blockchain).
If you're talking about changing the signature to match another existing signature so you can scam someone, it won't work, you certainly will show a signature that exists on blockchain and the buyer can validate it. However, when you try to sell it, you don't have the private key to transfer the ownership of this asset to another person.

The gold asset (jewelry, bars, coins, etc.) would have a QR code (asset ID for example) on it containing its description, just as it carries the mark of manufacturer (in case of jewelry), you'd be able to track the history of this asset and verify its meta data and real owner.

I don't see what exactly is stopping black market dealers right now??

As for the certificates, this project could be implemented both per country and internationally, since it's hard to make a global certificate across all country, each country can implement their own asset and either accept/deny other countries' assets, the process could require manual acceptance from an assigned employee.

What do you think I should include in the paper when contacting them? and would it be possible for me to make sure they won't discredit me?

For your first point, it's still useful to have it on blockchain, how? when you have gold asset (or any other precious metal), you can "destroy" it to create other asset(s) that have same total value (at max), so even when you're transforming accessories (melt a ring to make another) it's still recorded on the blockchain, as for other industrial and medical uses, they should be able to destroy the asset(s) without creating new assets, of course in the case of recycling facilities that extract gold from industry equipment, they would have to manually register the extracted gold as assets at a government office for example. Finally, for the black market, isn't the whole idea of this is to make gold moving transparent and prevent black market activity at first place? so if you try to sell some gold to black market without moving the asset on blockchain, government can catch corrupted employees/companies since if they do check up there will be missing gold that isn't reported.

For the second point, I'm not well informed in general stuff, but I guess in this specific application we don't need to register all the gold in the country reserve, only gold that goes into trading is required to be registered in order to track its movement.

First, I'd like you guys to take a look at this: https://www.youtube.com/watch?v=8nrVlICgiYM

That project made me wonder, why not use the same concept to protect gold in its various forms (bars, jewelry, etc.), of course, this should be adopted by governments to succeed.

The core idea is that every piece of gold would carry a digital signature, much like the certificate you get when buying gold. Those signatures are tracked as crytpo assets on the blockchain along with other meta info that describe the item, so when you want to buy gold you know exactly what you're buying.
Also, if your gold is stolen, they can't sell it since they don't have the crypto keys to transfer the owner of this item, with the help of government regulations it'll be much easier to find stolen gold.

What do you guys think? other than that I'll need to write proper document explaining the idea along with steps of implementation and technical documents, how would I start with it?
I believe in the potential of this idea, it's just a problem of how to get it started, since it won't work unless governments support it :/

Constant risk because your coins are on a server that's connected to the internet 24/7 with open port, there are cracker programs running all the time scanning for servers and trying to crack their login, not to mention 0-day attacks (altho less likely)

Why wouldn't someone do it? it takes literally 3 lines of code to get the difference image:
-read image1
-read image2
-result = (image1 - image2) > 20
this will result in a binary image (black/white) for all pixels that have difference higher than 20.

As for changing colors, it's a fine solution, if the color transformation is non-linear, otherwise it'll be possible to revert the image back easily.


Exactly, the delta image is a valid attack this time only because he shared the original image.

My original concern is about locating the location of characters, reading the characters is then a minor problem that doesn't have to be automated. Even if they're captcha style, once you know the location you can type them in manually.
Kindly see my previous post to see how someone with some simple code (available online) can do this.

I'm not sure they call it delta image in literature, but here's a brief explanation of it:

An image is essentially an array of pixels, each pixel is a vector of numbers that represent the Red/Blue/Green (RBG) components (or any other representation format).
I have the current image that you uploaded without the characters, when you upload the new image, I'll download it and now I have 2 images, subtract the values in each pixel in image 1 from the values of the corresponding pixel in image 2, now you have an image (array of pixels) that contains the difference between the 2 images, so you can see exactly which pixels were modified.
Pixels with low modified values (that can't be distinguished by human eye) can be zeroed out to reduce the "noise" of the image, this results in an image with only pixels that have significant change between the 2 images, all that's needed is to run some algorithm to detect those small characters locations (group of neighbor pixels)
-Drop any group with small number of pixels (ex: drop all groups with less than 9 pixels since you can't possibly write a character with them), so far the user only knows the location of the characters and can inspect them visually to extract the seed. This process can also be automated by simply adding another component that takes those pixel groups and perform character recognition algorithm on it.

That is how I'd go around scripting this contest, but I'm just an amateur in this and have used the naive approach, pretty sure anyone with decent knowledge in image processing can do much better job and explain in better technical details on how this is carried.

However, it's not impossible to defend against those "attacks", I have couple ideas that I'll PM you about (so others won't be prepared for them), as I said I'm not a professional so it's given that my defenses are week and will only stall algorithms. Also, the resulting image will loos some quality (due to changed pixels).

I'm afraid it's the first time I've heard about MFC, I'll make sure to read about it.

I really don't think this is a fair competition to be honest, specially that you've announced it this early.
Why? because someone out there is writing AI code that does character recognition in images and will sweep the whole thing within couple minutes.
Even without it, since you've posted the image without the modifications, it's possible to create a delta-image (difference between 2 images) using the current image and the one after adding characters which will reduce the amount of lookup to do.

Don't get me wrong, the idea is awesome in theory, but in practice it's hard to implement in a fair way.

I don't think Hashflare is valid collateral as you can obtain it back, even if you don't there's the problem of withdrawal limit, I'm not updated on what's their minimum withdrawal limit, but I've seen many complain that they're rising it, so whoever ends up with the account could possibly make the money back but can't withdraw it, which renders it useless.