I couldn't agree more. In fact I raised this question before the Hard Fork since it was the most relevant time to "warn" about it. But since I am usually not good in putting things into words, I gave up

I also don't see why the alert system is a point of centralization, or why they talk about risk of keys being compromised. A new alert system could have been put in place of the old like this:
The alert text tells the user that something is going on. Check where you downloaded this application for more information from the developers of the same app, and where would that be? Github, bitcoin.org, mailing list. But you at least told the users to go check it out and they won't be in the blind.
I don't see any way to compromise this either!

As for centralization, if you call that alert system centralization then you should call the fact that certain people are coding for bitcoin and @laanwj is the only person merging PRs (or possibly others) a point of centralization too! Because same people are putting up warnings on bitcoin.org, bitcointalk, reddit, mailing list,...

... BUT that is just what I think, and apparently nobody else agrees

What you quoted belongs to the creator of the puzzle!

Your transaction is wrong! More precisely your Tx_in_count is 0 where it should be something bigger and equal to 1

01000000 00 01012be973e52a7f8efbc91ef9c397a81df05c....

The bold part is your VarInt which should indicate the number of Transaction Outputs you are spending. it shows 0 here. Possibly you are making a mistake in creating your VarInt since what comes next is not a valid tx id.
If you are spending 1 output, which I am guessing you are, it should simply be "01"

BTW Nbitcoin has a (near) live chat here: https://gitter.im/MetacoSA/NBitcoin

Pretty interesting, thanks.

Are you sure you can get Public key from a signed message?
I have never heard of it and I can not find anything about "How" on google.

I was this far along with some mistakes :/
5JVAAm4A1rxDB5boKTCLyipVxNj9c---GdYx6AEe1VB7--9ALao

It looks pretty cool. I have actually been thinking about making something like this for myself

However I didn't understand what your material was. I know it is Stainless Steel, but you didn't say what exactly. Like what type, also what was the diameters, specifically the thickness.

I currently am in possession of a couple of plates with 1.5 mm thickness of AISI 420 (1500°C=2732F) , AISI 304 (1450°C=2650F), and another one that i have forgotten what it is but it is one of those Ferritic SS 
which one do you think is best to use here?

I also would like to add that your end result has a couple of flaws. For instance your 3rd character in your address is wrong. you put "I" instead of "i" and your private key is not properly etched, in second line at the end there are 2 unreadable characters (it is easy to guess or even brute force it though).
What do you think was the reason, and what should we do to avoid it?

In order to prove ownership of a key in bitcoin, you can sign a message with the private key and everyone can easily verify that you own the private key to a public key (bitcoin address).
Like what people are doing here: https://bitcointalk.org/index.php?topic=996318.0

That is why I have not yet shared my answers. I guess I will wait at least a day or two before sharing where I am. Maybe some people prefer a fresh start before the "sharing" begins.
I am up to 32 sure ones, 12 doubtful and 7 no idea

I'll probably only sign a message if I ever find the answer

Because you didn't read that link and again have another Invalid base58 char!
You have also got some mistakes.

Invalid base58 char!
https://en.bitcoin.it/wiki/Base58Check_encoding

I have no idea what 45&46 even mean!
Besides if you are just stick on 2 answers you can simply brute force it. There only 3,364 possibilities after all...

---

37)   XXXXXXXXXɃXXXXX = (11000000+110000+1100+11)*(11+1100+110000+11000000)
1111 1110 0000 0001
XXXX XXXX XɃXX XXX(?)
missing an x??

I am missing 26 answers, or you can say I have 25 answers. Depends on your philosophical views

Because I don't have the full blockchain at my disposal so I have to look for workarounds. If you have the blockchain and know how to read it then you can have a lot of fun trying different stuff

There is no way of knowing how much was "sold" using the blockchain.
But out of curiosity from block 478558 which was the fork, 22,093,618.96 BCC was transferred in 5288 blocks.

Process I used:
- Go to https://blockchair.com/bitcoin-cash/blocks
- Exclude blocks before fork height https://blockchair.com/bitcoin-cash/blocks?q=id(478558..)&s=id(desc)
- Export .CSV file
- In excell get the sum of input_total column.

Obviously this is not accurate either because this includes the change and the fees but not block reward.

Here you go:
Step2 SHA256: http://www.fileformat.info/tool/hash.htm?hex=800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
Step3 SHA256: http://www.fileformat.info/tool/hash.htm?hex=8147786c4d15106333bf278d71dadaf1079ef2d2440a4dde37d747ded5403592

Those online tools like this one http://passwordsgenerator.net/sha256-hash-generator/ you use are treating your Hex as a string.

P.S. Example was taken from wiki, and I hate the person who added _SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_ to the copied result  Be careful to remove it when you are trying to test and copy things or it will cause you a lot of headache since you may not know why the result is wrong with first look.

Safe to use:
Verdana
Times New Roman
Comic Sans MS
Arial
Courier New
Tahoma
Century
Autumn
Lucida Console
Rockwell
Scribble
Trebuchet

Can see only if have the font installed:
Book Antiqua
Calibri
Cambria
Candara
Century Gothic
Curlz MT
Franklin Gothic Medium
Gabriola
Impact
Microsoft Sans Serif
Mistral
Monotype Corsiva
Papyrus

P.S. It is not a bitcointalk specific font list, it is basic BBCode/HTML stuff. If the person has these fonts installed, they can see it; if not, they won't.
I have new academy font installed so I see it.
P.P.S. Quote my comment to see the codes I used! Maybe you used it wrong.

Found another for BTC, BCC, LTC. Here is the link for BCC:
https://pool.viabtc.com/tools/BCC/broadcast/

This does not belong here because it doesn't accept "bitcoin" transactions.
Also as an update, blockdozer does in fact have an API. It is the same as most insight APIs (it is just hidden).
You post the raw transaction with they key rawtx to this address: http://blockdozer.com/insight-api/tx/send
Here is how I do it in SharpPusher[/list]

Added support for BCC to SharpPusher™. Only has 1 API though.