Bitcoin Forum

Since there are so many garbage coins out there, I decide to create
this course to teach you how to create a new alt coin. It's so simple,
that I can usually do within 2 hours.

You need to have some basic knowledge of C++ programming. No need
to be an expert, but you need to understand the basic compiling errors
and how to fix them.

Follow the following steps to create a new alt coin:

Preparation Step:

Download the Litecoin full source code, you can find it in github, just
do a google, you'll find it.

If you use windows, follow the steps in this thread:
https://bitcointalk.org/index.php?topic=149479.0

set up environment and libs, and compile the Litecoin. If you are successful
in compiling it (and run it), then your environment is good.


Design your coin:

Now that you have env set up, before doing coding, you need to do some design of
your coin, this is simple math calculations, but you need them for parameters
in the coding.

Basically you need to determine what you want:
- name of the coin. Let's call it AbcCoin in our example. Also determine the symbol, we call it "ABC"
   in our example.
- block time: this is the average target time between blocks. Usually you set it between 15 sec and 2 mins.
   You can also do 10 mins if you want (like bitcoin), but it's too long imo.
- difficulty retarget time: this is important, since otherwise it could cause serious instamine problem.
   Usually it's between 1 hr to 1 day.
   (diff retarget time)/(block time) gives you how many blocks a diff retarget will happen. This is
   an important parameter to consider.
- what's the initial coin per block. People set it to 2 to 100, usually. You can set any you want.
   Also you can do coins per block based on the block number, or even randomly (like JKC/LKY etc).
- How long you want coins per block be halved. Usually it's 6 month to 3 years. But again you set whatever
   you like.
- Ports, you need two: connection and RPC ports. Choose the ones that are not used in common apps.
   You can google for a particular port usage.

There are some other things you may want to adjust, such as initial diffculty etc. But usually I don't want to bother with these.

Now with these parameters defined, one important thing is that you want to calculate how many blocks/coins
generated in a month, a year etc, and total coins ever will be generated. This gives you a good idea how overall
your coin will work, and you may want to re-adjust some parameters above.


Now the code change part.

Before you begin, copy the whole directory of Litecoin to Abccoin. Then modify the code in Abccoin.

Follow the below steps for code changes:

1. In Abccoin/src dir, do a search of "litecoin", and change most of them to "abccoin", note you may want
to do a case-sensitive replace. You don't have to replace all, but most should be replaced.
You can reference to smallchange code first commit
https://github.com/bfroemel/smallchange/commit/947a0fafd8d033f6f0960c4ff0748f76a3d58326
for the changes needed.

Note: smallchange 1st commit does not include many of the changes I will outline below, but it is a
good reference for what need to be changed.


2. In Abccoin/src dir, do a search on "LTC", and change them to "ABC".

3. Change the ports: use the ones you defined in coin design, and change in the following files:
- connection port: protocol.h and init.cpp
- rpc port: bitcoinrpc.cpp and init.cpp

4.  Change parameters, all in main.cpp:
   - block value (in GetBlockValue())
   - block time (right after GetBlockValue())
   - diff retarget time (right after GetBlockValue())
   - adjust the diff retarget scale to avoid instamine (in GetNextWorkRequired())

for the last item, refer to Luckycoin code, you will see how this is done.
For random coin values in block, refer to GetBlockValue() function in JKC and Luckycoin code.

5. According to your coin design, adjust the value in main.h:
   - max coin count
   - dPriority

6. Change transaction confirmation count (if you want say 3 confirmation transaction etc) in transactionrecord.h
also change COINBASE_MATURITY which affects the maturity time for mined blocks, in main.h/cpp.

7.  Create genesis block. Some people get stuck there, it's really easy:
- find LoadBlockIndex() function, inside, change:
    - paraphrase (pszTimestamp) to any recent news phase.
    - get the latest unix time (do a google), and put in block.nTime.
    - set any nNonce (doesn't really matter)
you can change the time/nonce for testnet too, if you want to use it.

After you are done, save it. Now the genesis block will not match the hash check and merkle root check, it doesn't matter.

The first time you run the compiled code (daemon or qt), it will say "assertion failed". Just exit the program, go to
config dir (under AppData/Roaming), open the debug.log, get the hash after "block.GetHash() = ", copy and paste it to the beginnig of main.cpp, hashGenesisBlock. Also get the merkle root in the same log file, paste it to the ... position in the following code, in LoadBlockIndex()

recompile the code, and genesis block created!

BTW, don't forget to change "txNew.vout[0].nValue = " to the coin per block you defined, it doesn't matter to leave as 50, just be consistent with your coin per block (do this before adjust the hash and m-root, otherwise they will be changed again).

Also you need to change the alert/checkpoint key, this depends on the coin type and version, you can find it in main.cpp, main.h, alert.cpp and checkpoint.cpp.

8. Set the correct address start letter in base58.h. You may want to do some trial and error to find the letter you want. I never can calculate precisely the letter location.

change corresponding "starts with " in sendcoinsentry.cpp
change example in signverifymessagedialog.cpp

9. Checkpoint: you want to disable the checkpoint check initially, otherwise you may get stuck.
You have multiple ways to disable it, my way is:
- open checkpoints.cpp
- there are 3 functions, comment out the normal return, and make them return either true, 0, or null, like this:

Now this is disabled. Once everything works, you can premine 50 blocks, and extract some hashes and put them in the checkpoints, and re-enable these functions.

That's about it. You can do compilation all the way along, no need to do in the end, you may get a lot compilation errors.

Oh, icons:

10. Find a nice image for your coin, then make 256x256 icons/images. You have 5 images to replace in src/qt/res/icons, and 1 to replace (splash) in src/qt/res/images.

11. Oh also edit those files in qt/forms. These are files for help etc, better make them look nice, display your coin names than litecoin ones.

12. Now for compilations:
- qt: modify the .pro file under abccoin, and follow the make process in
https://bitcointalk.org/index.php?topic=149479.0

- daemon: update one of the makefile for your system, and in my case I use mingw32 shell to make.


That's it, voila, you have your own alt coins!!

reserve

Missing some key parts, but I'm not gonna be the one to fill in the gaps for you.

Learn Hazard, your 0.5BTC has no business, lol ;D

destroryed Hazard's business... heck fish, you revealed also all my secrets too, wth..

it is the complete list to create an alt coin, it shortens Hazard's learning curve.

8. Set the correct address start letter in base58.h. You may want to do some trial and error to find the letter you want. I never can calculate precisely the letter location.


https://en.bitcoin.it/wiki/List_of_address_prefixes (https://en.bitcoin.it/wiki/List_of_address_prefixes)   ;)

Most wont read this and be like...  Why isn't my coin worth more?  Look at the feathercoin idiots.

lol, I still don't get why bitcoin worth more, everything is created from nothing, and it worth nothing.  ;D ;D ;D

missing? lol.  ;D

I noticed in your coins many of the above-mentioned steps are missing, that's why your coins are all crappy ones.

When will AbcCoin be ready for mining?

Its simple: Bitcoin is worth more because it has value.  Even the banks value bitcoin as of late.  New coins haven't got the track record to accumulate value yet.  Most wont ever accrue the trust.

I'm still waiting on someone to make a gui to make alt coins. Pick your icon and set some values and hit create. :D

time to make RNG coin...  random values in everything fisheater said.. after every block created new values so no one can predict anything except of course RNG coin would be worth crappo

Oh man. We need a script that can do the whole thing :P

And then someone please make the metarandomcoin that makes random forks of itself.

good idea to do a script for it. :D

Clueless.. just completely clueless.

is there any reason why all these alt litecoins have issues with the wallet?  After syncing  , it tries to sync back to the litecoin blockchain?

It's easy to call people idiots. It makes it easier for us to actually reach our goals. Better signal to noise ration back at home base.

People who creates scam coin are smart guys. People who mine scam coins are idiots.  :P

I LOLd.

Thanks!
Great works!
Need "Complete Guide on How to Compilation a New Alt Coin"
 ;D

well, this i my first time to program C++ but i made it all the way to compiling. i get multiple targets **stop** when i try to compile from command prompt with mingw

I'll fill you in with the missing pieces for 1 BTC. 

The missing pieces are intentional.


Everything is going as planned.

yes looks like the missing pierces are intentional, I know there are things like pubkey etc, I am sure fish knows it.
close the thread fish!

so many shit coins there, and "IPO"s.

This is a guide by me to create a new coin almost a year ago, it's so easy for you to create a new one, instead of buy into those "IPO"s, which will be totally dumb!

Although some steps are missing in this guide, it gives you an idea how to create a new coin.

I could not find new genesis block and hash in debug.log. How do i have to do ?

I can help you out if you're willing to pay. :)

okey just do it for me . just create and let me understand it.

LoL the most funny stuff i read today :-)

If you know the basic programming, you'll see where are the printf statements in code. If not, then don't bother.

interesting guide, just a bit old. For X11 coins is it the same process?

I guess making the coin is step one.

The next step is getting a bunch of mindless fanboys muttering broken sentences to make it popular. That's the hard part my friends.

I am not sure if anyone needs this but i found a guide awhile ago that shows exactly from start to finish. I'ts explaining even generating the geninis block. I found it on google after hours of searching before i decided if i couldn't do it without a guide it just shouldn't make one. Take that into mind before you start the guide.

http://87.98.217.208/

I can compile on all the other systems but Windows, it just keeps giving me a problem like this one, if it is familiar to most people. Anyway I am able to fix this?



I can clearly see the file right there, but not sure what exactly is going on with it.

this guide is good but not explain how to change the key alert in: alert cpp.
someone will have an explanation for how this change?

Thanks for the guide! I know this is old, but hopefully someone will answer!

I successfully created the genesis block hash and the merkle root, and recompiled the code with the correct assertions. However, I now get an error when I open the program that says 'Error loading blkindex.dat'

What should I do about that? I deleted the blockchain files and still get the same error.

It is the blockchain telling you to not create another shitcoin.

Jokes aside, this is the genesis block not accepted due mismatch error. You are using either wrong genesis creator code or did something else wrong. Google and figure it out.

This is really more of a personal project really, but thanks for the answer. I found what I did wrong and successfully created a good genesis block and recompiled. Now, my wallet loads fine. However, I am still a bit confused. I forked this testcoin from the Blackcoin source code. When I load it up, it says it has xxx connections to the network, and says it is downloading block 0 of 193113 blocks in the chain. Does this mean that it is still somehow trying to load the Blackcoin blockchain? I'm guessing the nodes are built into the Blackcoin wallet somewhere?


EDIT -- I figured it out. In case anyone else has this problem, the nodes are built into /src/net.cpp

I disagree with the first part. Somehow modern society has declared the production and sales of useless bullshit to be a positive virtue, but its not, and this mindset is slowly collapsing society.

Truly smart people aren't interested in making the world around them a stupider place to live in, because they realize that behavior that hurts more people than helps isn't smart. It doesn't matter how much money it makes you -- if people around you are worse off because of you, you're an idiot.

Really nice tutorial.

I did all that and now have 0 blocks right?

But when I mine, it says Waiting for work to be available from pools. And cpu mining shows no activity.

https://github.com/BitpopCoin/BitpopCoin

Send me a pull request with everything working for .01 btc

don't break the bank big spender!

Well I wasn't planning on spending anything on my coin lol

Lol? You offer $6 for help on something you say you had no intention of spending any of your own money - or time it seems.

You my friend said it better than I could have ever articulated.
All these scam coins...argh.

This is your problem.

Hello,
Very nice tutorial! Good job! Now we can expect a huge wave of new shitcoins :D but for sure it will pass with the time no one will bw interested into new coins exept if the coin dwlivers something really new to thw community. You took the bread from some people on this forum :D
BR
Gondel

Nice, more new coins incoming..

Isn't that just the reward though? I can't mine period.

now this is one hell of a statement and I had the deep urge to repost this right now...

...though, as live is a bitch (or at least comes with sort of odd sense of humor), the dunning - kruger effect
shows to us, that presumably the majority of those individuals this statement actually addresses, are in fact
due to their nature incompetent, hindred and sometimes even unable to at least partially comprehend
mentioned concepts... tl;dr: sad thing, it's like talking to a brick

I need a private alt coin based on Bitcoin and I am willing to pay $500 in BTC. 

Here is what I am looking for...

I would like to take the open source code of bitcoin and modify it in such a way that…

• Instructions on how to rename it and compile it for windows and linux
• The genesis block creates all the of the 2.1 billion crypto currency units and are accessible
• same divisibility as bitcoin
• The crypto currency must support colored coins so we can issue new types of the same coin
• It uses a different port for communications
• New blocks mined can only be created from a list of designed ip addresses with option for all
• All transactions require fees except for addresses listed in a file (signed)

IF the thread op can do this in 2 hours man that's an easy $500 for him.

Davinci





 

I'll escrow

shit, gotta learn c++  ;)

I think you need to set your price higher, you want a lot of custom coding which takes time and testing. $500 might get you a basic clone with some decent code but when looking at it from a Development point of view, you could sell 5 clones at $100-200 each and that's a few hours of work but what you want might be a couple weeks plus Beta and to be that skilled they would probably be working on their own project instead. I can do some stuff but what you want is beyond what I can do, you would probably be better off either learning how to do it yourself or setting a high enough bounty that it's worth it for someone with the skills to do it.

Also, this thread is from mid 2013 and the OP hasn't been active since August.

This is a really useful guide, thanks!

ppl haven't concerned creating new coin anymore?
Or there's another thread for discussion about this?

I can't see a similar topic like this that is more updated than January 2015. I bet people aren't interested now in making a new alt coin, they just buy and sell alt coins now. They are more on trading now. There are tons of alt coins out there that are unsuccessful and just become dump coins.

Did you manage to get this accomplished?

T
Ken

Hi.

I just have a quick and easy question. How can I get premined coins by modifying this code?

Thanks.

If you have to ask a question like this you are better off availing yourself of Hazard's services yourself.

Thanks.

I'm already using Hazard's solution.

But I want to learn how the system works. So my question is still relevant. What is a good way if I want to have premined coins?
I can set difficulty target and emission speed factor to as high/low I want before the necessary coins are mined. However in this case I'd still need to mine technically.
What I'm interested in, is what I should modify to avoid mining in terms of premine.

Thanks.

It is great tutorial, unfortunately i still don't understand about c++ programing language although i have learned about it, the problem will from the codes and algoritm, and i think it will need time more than two hours. Thank you so much it is nice informations.

The easiest way if you are using a Bitcoin clone is to 'instamine' the first few blocks by having grotesquely large rewards  - I think I am right in saying. I don't think you can avoid doing this whatever proof you are using to validate blocks unless you substantially change the code. Then you need to update the checkpoints before releasing the node software. If you have plenty of time you can do this over a few hundred or thousand blocks - the key is to be honest about this in your ANN as the emmission parameters will be obvious to even casual users with access to the source code.

thanks for the detailed guide ,i want to learn about these in detail and i will look into this on how things work as i am seeing many scrypt coins i have to understand the basics in finding out scammers just copy pasting the original source ,i am not an expert in c++ but i will try to experiment with it

Quiet interesting because these thing came to my mind way back then when my curiosity about altcoin and actually made a question on my mind on how to create one, and I already assumed it would be a difficult one. As I've read on op, I could say it's really hard and I'm not mistaken, I'm not too good on c++ language but theres many things should be done in able to create one. I would study these steps though..thanks for this

Thanks. Helped a lot.
One more thing:
When you checkpoint your premined blocks, are they need to be matured already? I need to wait 40-50 blocks to be mined, to make my first 2-3 blocks matured before checkpointing them?

Thanks

Really nice. That's the right direction to go. Blockchains for the people.

BTW Soon after launch of HEAT it will be also possible to easily get own fully operational crypto creating original side blockchain existing independently with other blockchains on existing network and throu it's wallet (no programming konwledge needed). Hopefully competition will help in rise of new original projects.
Now we need only smart people with good ideas for new innovative coins and meaningful useage of such blockchains. Possibilities are endless, you just need to notice them around you.

or it could go awry. a determined scammer can create a coin of his own and scam the users leaving the other coin team with nothing to compete about for the investors money are already taken by an anonymous scammer who create a smart innovative and use of blockchain.

hi guys,
i'm trying to build a new altcoin just for demostration.

i'm stuck at this point

i opened main.cpp and found GetBlockValue() but all i can see is this:

anyone can help me?
thanks

If you are stuck, then do everyone a favor and give up.

This is very helpful, thank you! I was thinking of designing a coin with my friend. It will be tough to get it off the ground though.

But overall, very well put together guide :D

Satoshi Nakamoto had a magic wand :)
https://www.youtube.com/watch?v=VKRAY3t1L-o

a coin that can be compiled in visual studio 2015 or C# pos coin

There is a noob Altcoin project named Practice Coin. In the process of reviewing coin types, coin building services, guides and tutorials.
In the end will make and launch our own coin.
https://bitcointalk.org/index.php?topic=1850047.0
  Tearo

Hello,

Very nice post, congrats! Just one dumb question, sorry I'm new to Cryptocurrency...
After the creation of the new coin, how should you start injecting money to the network?
The starting coin ballance should start in an wallet and being transferred to other participants?
Would be possible having such thing as a "Central Bank" to issue money?
How should this could be accomplished?

Thanks
Q
 

Hello Friends!!!

Following this guide and trying to compile my coin in windows i get this error msgs:

g++ -Wl,--large-address-aware -static -static-libgcc -static-libstdc++ -Wl,-s -mthreads -Wl,-subsystem,windows -o release\Coin-qt.exe object_script.Coin
-qt.Release  -L"c:\Qt\4.8.5\lib" -lmingwthrd -lmingw32 -lqtmain build\bitcoin-qt_res.o -LC:/deps/miniupnpc -lminiupnpc -liphlpapi  -lshlwapi -LC:/deps/boost_1_5
5_0/stage/lib -LC:/deps/db-4.8.30.NC/build_unix -LC:/deps/openssl-1.0.1j -LC:/deps/qrencode-3.4.4/.libs -lssl -lcrypto -ldb_cxx -lws2_32 -lshlwapi -lmswsock -lo
le32 -loleaut32 -luuid -lgdi32 -lboost_system-mgw47-mt-sd-1_53 -lboost_filesystem-mgw47-mt-sd-1_53 -lboost_program_options-mgw47-mt-sd-1_53 -lboost_thread-mgw47
-mt-sd-1_53 -lboost_chrono-mgw47-mt-sd-1_53 -lQtGui4 -lQtCore4
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -ldb_cxx
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_system-mgw47-mt-sd-1_53
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_filesystem-mgw47-mt-sd-1_53
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_program_options-mgw47-mt-sd-1_53
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_thread-mgw47-mt-sd-1_53
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_chrono-mgw47-mt-sd-1_53
collect2.exe: error: ld returned 1 exit status
Makefile.Release:299: recipe for target 'release\Coin-qt.exe' failedmingw32-make: *** [release\Coin-qt.exe] Error 1

For i can see it seems a problem with the mgw47-mt thing  :o

Please help!

Ale

The location of the blockchain parameters has been moved in the recent codebases. All the instructions and guides dating back from 2014 have become obsolete, for Litecoin releases based off Bitcoin 0.13 and later.
Cloning methods for the recent Litecoin version is a work-in-progress, a part of our learning process at the Practice Coin project https://bitcointalk.org/index.php?topic=1850047
  Tearo

You can always use older versions of the sources
and then the old guides will work - sort of, there are sometimes
intentional blanks and errors. But you ought to have some
understanding of what you are doing anyway. That is, you need a basic
knowledge of C++ and programming, otherwise you will
get stuck time and again.

The drawback in the older versions of the software is that they
may have security issues, so they're not fit for production
(launching your own coin) but for the learning purposes they are just fine.

In fact, for learning, the earlier the source, the better.

Indeed:


g++ -Wl,--large-address-aware -static -static-libgcc -static-libstdc++ -Wl,-s -mthreads -Wl,-subsystem,windows -o release\Coin-qt.exe object_script.Coin
-qt.Release  -L"c:\Qt\4.8.5\lib" -lmingwthrd -lmingw32 -lqtmain build\bitcoin-qt_res.o -LC:/deps/miniupnpc -lminiupnpc -liphlpapi  -lshlwapi -LC:/deps/boost_1_5
5_0/stage/lib -LC:/deps/db-4.8.30.NC/build_unix -LC:/deps/openssl-1.0.1j -LC:/deps/qrencode-3.4.4/.libs -lssl -lcrypto -ldb_cxx -lws2_32 -lshlwapi -lmswsock -lo
le32 -loleaut32 -luuid -lgdi32 -lboost_system-mgw47-mt-sd-1_53 -lboost_filesystem-mgw47-mt-sd-1_53 -lboost_program_options-mgw47-mt-sd-1_53 -lboost_thread-mgw47
-mt-sd-1_53 -lboost_chrono-mgw47-mt-sd-1_53 -lQtGui4 -lQtCore4
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -ldb_cxx
C:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lboost_system-mgw47-mt-sd-1_53


perhaps you'll have better luck with something like mgw49-mt-sd-1_55 or near offer.

The resolution lies in the <coinname>.pro file, look for where BOOST_LIB_SUFFIX is bound and ensure the numbers match the versions of the installed mingw and boost packages.

Cheers

Graham

 ;D ;D
YOU FIX MY BOOST PROBLEM THANKS!!
 ::) ::)

right now seraching to fix this:

c:\test\coin-master\src/txdb-leveldb.h:119: undefined reference to `leveld
b::Status::ToString() const'
collect2.exe: error: ld returned 1 exit status
make: *** [coind.exe] Error 1

:(  


*EDIT: leveldb recompiled in windows... WORKS FINE NOW! ::)

That is cool ,any guide on how to fork ETH?

Sorry, little english ...
Like this?: https://github.com/ledgerlabs/ethereum-getting-started/wiki/local-node
No need to fork, just start a new chain.

lol, glad to see people still interested in my "how-to" 4 years ago  ;D

thanks for the infoemations great help

Hi,
Does anyone know what my error means when I start litecoin-qt
debug.log:
ERROR: ReadBlockFromDisk: Errors in block header at CBlockDiskPos(nFile=0, nPos=602)
*** Failed to read block
Error Message when starting:
Error: An severe internal Error occured, see debug.log for details
Any Help would be apprecitaed
Thanks in advance

Is there anyone who produces his own coin in this way?

  only like 1000 times so far.  welcome to the party

anyone can tell me , i want have  etc 1000,000 coin for developer or miner first (me-make coin) ,what name file i can change ? thank you

i have managed to set to work a version 8.7 or something like that, but i cant do it with the last version, stuck in the genesis block, i have generated some hash that dont throw the assert, but it seems they are not right because when i run ./litecoind sometimes gives an error that cant find the best block; or cant read the block (when this happens i reindex and dont throw any error but stay like running but do nothing)

with this I try to generate the genesis block, but never do more than 1 iteration, and cant be rigth, it should take a while to find the nonce
the hash function pass the assert, but it gives me then some of the errors mentioned above

I know this is old but it's worth learning.

Thanks a lot its really awesome being a decade as a programmer i never thought to create a coin . Now its given initial pushing thing .I got some priority work to finish once done i will dedicate some time and try to create coin . i have C++ in college days even i dont think its a big deal .

Oh yes, looks like a lot of fun!  Trying this out now.

Does the guide need to be updated?  Who found they needed to do a bit of extra research?  I'm finding I have to look elsewhere to change port numbers for a start...

Thanks for the guide to making new altcoins :)  Love it!  I hope to learn quite a bit from tinkering with the source and creating a nothing coin.

Does there exist any new such thread, with current reality, how to create a coin?
Or it`s the same?

it is a good start point, but if you are going to code with latest release, this guide is obsolote, lot of things have changed since it was created.
So it needs to be updated, most of all, how to create the genesis block.

you could try this one
http://dillingers.com/blog/2015/04/18/how-to-make-an-altcoin/ (http://dillingers.com/blog/2015/04/18/how-to-make-an-altcoin/)

Thanks I'll read that later and try that one out. Thanks for sharing.

Did you try the guide yourself, and how good is it?

it is easier with older versions, the newest one have changed a little bit, and can be harder, good luck with that

Thanks a lot for the detailed guide. I was searching for this for many days. This was the closest to what I was trying to do.
By the way, The code has changed a lot in the most recent version of bitcoin's repo. I was facing issues with OpenSSL headers when I tried to run the older version of the code.

I managed to change the parameters in chainparams.cpp and get the new hashblock and merkle hash. But stuck at finding the checkpoint methods that you mentioned in the guide. Without updating those the core is trying to load the checkpoints from disk and ends up in segmentation fault.

Any solution or direction I need to look into might help. Thanks a lot again.

Here is my debug.log

I have a mindblowing idea for a coin need a team. Are you developer fish can we do a setup?

May i translate this post and upload it to my blog?

I got struck up following the guide for the latest version of bitcoin code. Is there any specific version of bitcoin code which is apt for this guide?

This might work (it is mentioned in the tutorial)

https://github.com/bfroemel/smallchange

version 0.7.* should work, and not sure if .8 would work too

If you mean Bitcoin, yes, it would work, but you need to do
more things than what is provided in the opening post.

but it is easier than latest versions for changing

Thanks a lot for helping me out. Yes, I did look at that github. But when I try to build it, It gave an openssl error

OS: macOS Sierra 10.12
Openssl:

OpenSSL 0.9.8zh 14 Jan 2016
built on: Jul 30 2016
platform: darwin64-x86_64-llvm
options:  bn(64,64) md2(int) rc4(ptr,char) des(idx,cisc,16,int) blowfish(idx)
compiler: -arch x86_64 -fmessage-length=0 -pipe -Wno-trigraphs -fpascal-strings -fasm-blocks -O3 -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DL_ENDIAN -DMD32_REG_T=int -DOPENSSL_NO_IDEA -DOPENSSL_PIC -DOPENSSL_THREADS -DZLIB -mmacosx-version-min=10.6
OPENSSLDIR: "/System/Library/OpenSSL"

But the latest bitcoin or litecoin code builds perfectly.

0.7 version of which code? I wasn't able to find a 0.7 branch in either bitcoin or litecoin.

If I make poop coin will you mine it?

The easier how to make a new altcoin gets, the more prone this forum and the entire world of crypto will be flooded with new coins. We have already almost a thousand coins. And most of it are shitcoins and the rest are poopcoins. They are without real use in the real world. ;D
 

Wow this is awesome! I was half expecting to see "Download Waves" Make new token! But this is super legit. Thank you for posting and sharing :)

Doing this stuff on mac or win was never a walk in a park. Get linux

Try setting OPENSSL_INCLUDE_PATH and OPENSSL_LIB_PATH.

Cheers

Graham

i am not sure about 0.7, but i downloaded 0.8.* about a month ago..of litecoin

Isnt it very easy with waves platform. You can create a new currency in only a few minutes. And waves platform has a good potential for next years so it is one of the best way for now i guess.

Some interesting docs here. I prefer mining but I guess creating a coin could be good to keep the mind sharp. I would throw it away afterwards though or just run it as a pvt chain for testing.

is this instructions still valid ? because thread is 4 years old. i want to make my own coin for fun but everything i found is old.

haha feather[Suspicious link removed]d memories with this coin :P one of the first I messed with back in the day. 2014 was a good year :P

Hello,

I am new to the sphere of CryptoCurrency.

My understanding is that the guide is around the Windows system.

Can you direct me to a similar guide for setting it all up on a Linux system(Fedora)?

Gratitude

could someone please message me or help out here??? after i generate the genesis block and insert it twice into main.cpp once into checkpoints and insert merkle once into main.cpp then recompile i get an error: incorrect or no genesis block found. wrong datadir for network?

please without smart ass remarks help me out

the steps for what you need to change is the same , it has just different system requirements. dependenign n what crypto do you wanna try  you can find some documentation about it... generally provided by the same crypto of how to compile the currency

Never trust a man with "enlarge your penis" in his signature.

hahaha, do you need posts to reach your weekly signature campaign  to earn some pennies ???... at least post something usefull man, good luck in the signature campaign...

Just making a joke dude. I've never made any money from my signature, you can ask the Stratis team. I do it for the love. You on the other hand... clearly making bank with those sports betting robots and forex strategies.

this shit is no good anymore


here are the goods

http://dillingers.com/blog/2015/04/18/how-to-make-an-altcoin/

if you cant do this contact me :)

indeed, need to find it and delete it or replace it...

Hey. I'm training to create a coin based on DashCoin with masternodes. I generated GenesisBlock and everything. After the launch, I get in the logs:

I understand the mistake in the absence of the master. But how can I run it without having coins?

Perhaps it is necessary for the first time to turn off the master programs altogether?

In what direction should I move? Any ideas?

I really needed that laugh after the day I've had at work.

Thank you kind soul.

this works, thanks for creating this.

Very nice and informative guide, thank you!

Hey! Started following this guide and halfway through realised that it references files that don't exist. I'm presuming this is because this post is a few years old now.

I haven't managed to find an updated guide - anyone know where to find one? I noticed the comment above to a post on dillingers.com but would love to continue with Litecoin since I've already started if at all possible.

Many thanks for any help or pointers.

it doesn't matter if it is btc or ltc, what you have to change is the same in both

This looks an interesting guide, thank you for taking the time to put it together!

I need to help. I have created a coin for myself, but when sent, can not receive. Why wallet contacted the system it has multiple ports connected to it
http://fs1.directupload.net/images/171105/el82all8.png
http://fs5.directupload.net/images/171105/i8qqsing.png
http://fs5.directupload.net/images/171105/uncttku6.png

what is the alt coin server's system requirements ? can someone share the related topic for this.

so easy?!?! Do you write this post by yourself?

Hey buddy, did you end up getting this to work? And if so, how did you solve it?

very good writeup, funny thing is everyone on P1 is either legendary or hero
thats how old this post is

yeah right as i read the year its on 2013 but it catches the eye the people to reply on this thread.

I can't see a similar topic like this that is more updated than January 2015. I bet people aren't interested now in making a new alt coin, they just buy and sell alt coins now. They are more on trading now. There are tons of alt coins out there that are unsuccessful and just become dump coins.

Interesting writeup. Makes me wonder how many are doing this right now (creating Alt Coin) and release it in the coming days.

Great Guide.

Helped me with the genesis block mining part.

Any help with masternode code?

We could enjoy also some more recent guide on who to make more complex coins.

I honestly think it's easier to go with a project like Polymath that is building a platform for people to launch their own security token projects. they even have crypto-friendly lawyers.

Their demo: https://polymath.network/wizard/

https://polymath.network/

Great Guide.

Helped me with the genesis block mining part.
good! ;D

Wow this is awesome! I was half expecting to see "Download Waves" Make new token! But this is super legit.

First of all, thank you for your detailed tutorial.

I am new to crypto currencies and i want to create my own coin but not for the market, but for payment processing in small festival.

I successfully cloned and created 4 nodes of litecoin-core, and changed everything to match with my coin, but i am stuck for some things now.

I have several questions:

I used https://github.com/tiagosh/AltcoinGenerator to bootstrap everything

1. I am using -regtest parameter and i can successfully add blocks in each node and earn coins. First of all, how nodes know to communicate? Is there main node which is updating every other node in network? How current nodes know about new nodes?

2. Are that 4 nodes actually miners? How can I setup them to automatically mine and processing transactions, because i don't want payment platform to be decentralized, but only built on top of litecoin so it can scale to decentralized model if needed. Festival is small event and there are about 5000 people there which should be able to have wallets and make transactions, so i suppose it would need big number of miners?

3. How can i build mobile wallet? First of all, do you need actual node for every wallet? How can I create wallets which only can pay without actual nodes? And how to create mobile wallet which can send and pay? Is this possible with JSON-RPC api which exists in litecoin-core?

Applications should be SO SIMPLE, only to have qr code of wallet to receive, and also possibility to scan other qr code wallet and to send there.

So my main understandings are:

How nodes know about each other, is there centralizes api node?
How wallets know about nodes, where mobile wallet is sending request for making payment?
Can I make simple HTML5 and JAVASCRIPT wallet applications? It doesn't need to have whole blockchain on it just to be able to make transactions.

For last one, my basic idea is to have one node ( but dont know how to communicate with it? RPC-API? What is endpoint? server-ip:port? )
which is used for all payments or maybe to have node per wallet, but it will be on server and simple app will just communicating with it via some protocol? Is this secure? Are there flaws for this system? I tried to find litecoin-core for mobile but there is not.

So, somebody will ask me why just you dont build centralized database payment system instead?

Because I want to learn about blockchain step by step
Because it already have great code base for secure ledger balance processing which i need and i want to try working with it.

Sorry if my post is confused, but i have so much questions and need to start somewhere.

Thanks

Isn't custom coin creation one of the major features of Bancor BNK ??

https://bitcointalk.org/index.php?topic=1789222.0

Read the bottom portion of the OP on the above [ANN] for BNK

WasTriffin ..

I am planning to create a New AltCoin Based on LiteCoin or Ethereum

1. Planning to hire some Developers - Need someone to Code the New Altcoin - will be paid Hourly or Stake in Company Shares
2. Have a Developer already who is ready to Design Website, Android/iOs Apps
3. Need to understand if i need someone to design the mining software so we can put it into a Android App and Send it to the List of Interested Individuals who are ready to Mine
4. Hired Couple of Guys for marketing and sales
5. have a set of Inverstors who are ready to Invest in more than 100K USD to maintain the software and upgrade costs to keep the COIN Running for a period of  time into Future

Interested People Please PM Me we can work out % of the Company Shares or Hourly Rate or Fixed Rate to Complete the design. I have already Registered the Company and Everything.

is there available any video tutorials.

How to change algorythm for fork? Or how to create new algorythm? can anyone explain me how to do this?

We have disabled the sync for the duration of the first block

Hi.

I also want to make my own coin.

Is this tutorial still can follow and works well?

I am concerned original posted so long ago.

Same question, great guide, but is it actually??
thank you so much!

Part of the work you can do on the instructions, somewhere I'll have to figure it out

How do you go about forking a mobile wallet like mycelium in order to use it with an altcoin created using thsi tutorial?

Thank you so much it helped a lot. How can one create wallets for the newly created altcoin? Please write a tutorial on it also. Can someone tell me whose code has this guy forked? https://github.com/0xfff/VanCoin

Very interesting stuff, but in the last years things changed a lot. Of course you still can make a new coin, but now - if there isn't a real project behind it, it will die immediately.
It would be as to print our own money: it's possible, but nobody will accept it.

how to disabled the sync for the duration of the first block?

I followed this tutorial https://www.youtube.com/watch?v=YF3oE5uIP64&t=13s but stuck in running VM and creating wallet anyone can help?
I type getinfo show the connections 0
{
    "version" : 80704,
    "protocolversion" : 70002,
    "walletversion" : 60000,
    "balance" : 0.00000000,
    "blocks" : 0,
    "timeoffset" : 0,
    "connections" : 0,
    "proxy" : "",
    "difficulty" : 0.00024414,
    "testnet" : false,
    "keypoololdest" : 1519451476,
    "keypoolsize" : 101,
    "paytxfee" : 0.00000000,
    "mininput" : 0.00001000,
    "errors" : ""
}

Great post and thanks sharing!!!

It's not working on BC 0.8, for example :(

Thanks for the post, although it's an old post, but it's a good way to learn how bitcoin and blockchain works.
But one thing I don't quite understand why do you create a guide based on Litecoin, wouldn't it be much better if forking directly from Bitcoin? After all Bitcoin is the Mother Of All Coins(MOAC).

Newbie with 1 post you wanna scam ppl with your new coin?😂 Ahahahaha

nice tutorial,

I have created the altcoin it is working perfeclty.

but my MAX_MONEY it is not working.

how can i fix this?

seams very complicated, my wallet it is creating more coins then suppose to have.

I created this but nobody helped.
https://bitcointalk.org/index.php?topic=3236523.msg33709414#msg33709414


someone can help me with this?

It make the programmers so easy to make their own coin and make so many useless altcoin out there.
So what we need to do now? I think regulation of the coin would help the good coin grows. Only coin which has capability and not sh** coin.

I made an update to this post, based on latest bitcoin codebase, please see https://bitcointalk.org/index.php?topic=3345808.0 (https://bitcointalk.org/index.php?topic=3345808.0)

What do you mean by it is not working? Did you test it and it let you have more then the max you set? Did you premine your coin?

will try look if this fixed genesis generate  ::)

If you want to make new coin, why just not use wawes platform to make it? I think that its not important how you make it, how much what that coin represents...

you wrong dude how can cat is different with dog?

that simple cat is cat. dog is dog. so i think combine become one no.....

innovation growth not by them platform but intelligent of self.

it is a decent begin point, however in the event that you will code with most recent discharge, this guide is obsolote, part of things have changed since it was made.

So it should be refreshed, the vast majority of all, how to make the beginning square

the code change by time to time...what we need follow up. if new player in this game in....i think will lose. because now bitcoin have segwit and another of fork have specialty of technology. this guide work old fork~

Calm intriguing on the grounds that these thing struck a chord path in those days when my interest about altcoin and really influenced an inquiry at the forefront of my thoughts on the best way to make one, and I effectively accepted it would be a troublesome one. As I've perused on operation, I could state it's extremely hard and I'm not mixed up, I'm not too great on c++ dialect but rather theres numerous things ought to be done in ready to make one. I would examine these means though..thanks for this

new code more complex than this so need experiment self  ;D

great thread

rather cool if them update segwit ahahaha but. i try many thing here~bitcoin complexed codes!

Calm fascinating on the grounds that these thing rung a bell route in those days when my interest about altcoin and really influenced an inquiry at the forefront of my thoughts on the most proficient method to make one, and I effectively accepted it would be a troublesome one. As I've perused on operation, I could state it's extremely hard and I'm not mixed up, I'm not too great on c++ dialect but rather theres numerous things ought to be done in ready to make one. I would think about these means though..thanks for this

well yeah today at last programmer C++ got proud for this. when i stop on c++ now back again. they like family for me. for now what altcoin need is what change. and goal they have  ::)

Ethereum Smart Contract pre-compiled
https://github.com/satansdeer/ethereum-token-tutorial

Waooh, this is a great topic and I really like the write up but the only problem is i don't know c++. This will be my Ginger mode to study the c++. Lastly if you can perhaps give the guide on how to fish out scam coin,  it will be of great help

Can you contact me for hiring you?

Any guide for POS coin?

I've written a guide on who to make altcoin
based on Peercoin, but it is based on earlier version.

However it should give solid guidelines on how to
work with newer version, if you have a basic understanding
of coding.

https://www.scribd.com/document/352682620/Yarkos-Altcoin-Guide

Any chance of posting it somewhere less intrusive?

Cheers

Graham

Hello and thanks for the guide. I'm learning how the blockchain works and trying to do my home shitcoin, but I can't seem to be able to get rid of the blockchain and old genesis block from any wallet I tried to be able to restart the chain for myself. Would anyone help me out and let me know what to do to delete old genesis block? At the moment I'm trying Peercoin client.

Thanks anyone for help.

You can pre-mine as many coins as you like set the coin value in the Genesis block to the value of coins you want to mine in the first block.
I see no trouble with this.

I did manage to get the Peercoin cloned

https://steemit.com/cryptocurrency/@bluudz/how-to-create-cryptocurrency-pow-pos-peercoin-based-e4c88518156d3est

Hope it will help someone.

Can be a contributor in case you are doing something valuable  :)

if just copy paste work it's not good. you need more sharp doing. I'm doing costume my self after last fork bitcoin. it's before peercoin. and I costumed it so it's new system self.

The hardest part that people often miss is: You have to mine your own Genesis block. Here's a guide to mine your own Genesis block.

https://medium.com/@dophuoc/how-to-mine-a-genesis-block-for-your-bitcoin-fork-471b1fb47efb

This is such a nice tutorial, but doesn't this would means that it will increase the number of low quality coins to be increase even more if more and more people able to create one for them self.

Just have completed reading the whole topic and ut looks pretty easy to me. I am still confused about some issue. Will you mind to receive a PM from me regarding some question?

What, Is he going to build his own cryptocurrency? I think it is not just enough that he created a code for it. We need here is the supporters that will going to make things possible in the crypto space.

Avoir premine in the genesis block (first block). Rather pre-min on 100 blocks or more so that all the BIP and Segwith can kick in othewerwise if you premine too much at a low height the block will fail to meet the minimum work consensus and your nodes will flag your mining wallet for Misbehavor or wrong block header's errors. Just do it spread on time, and don't forget to change the STALE_CHECK_INTERVAL to a value higher than the time between your genesis creation (1st block) and your first premined block.

There are so many things missing from this tutorial (as of Bitcoin 0.18) that you should not worry about that. I just think about all the verifcation.cpp stuff or using stratum and a pool to mine... jezz this tutorial is good for starting but there is so much work that is not explained here (or anywhere). If you are not a very good experienced C++ dev and you have a lot of time, better use bitcoin 0.14 like most coins are using (zCash, Dash, Litecoin etc...) latest version of Bitcoin has a lot of security enhancements that you need to remove to start mining at height=1

many things will be missing if you guys do not see updates. see updates on bitcoin GitHub. or any further altcoins upgraded.  ;D

I'm still in the process of creating a new coin, Bitflate, https://github.com/bitflate/bitflate. It's not as easy as following steps. The biggest challenge to come is the infrastructure to support a coin.

Just so you know, a different thread about the same subject, but updated for 2019 and Bitcoin 0.17/0.18 has been posted here: https://bitcointalk.org/index.php?topic=5134256.0 (https://bitcointalk.org/index.php?topic=5134256.0)

Im doing new altcoin launch full service
According to guide with more options to choose
basic package 300 us
mobile wallets

What version of Bitcoin are you forking?

This thread is very old, you might check another more recent one... because Bitcoin has changed a lot since. Maybe it should be archived.

Copy a Blockchain.... Run nodes... Done.

Easier said than done for new upcoming blockchains

any version needed including latest

yeah I started number years ago
anyways using latest source code possible

yeah takes bit more time but possible

This guide is well out of date now and missing key info and things that need to be done.

if you fork early coins that still have the old SSL libs ect for example you open up your coin to attacks.

This guide is outdated and should NOT be used for a production coin now.

Guys it was posted in 2013 lol just a touch out of date don't you think lol

Thanks for the info mate this looks verry good!

I made a video that walks you through how to actually achieve full rename (including renaming ALL files and ALL occurances of bitcoin to your own altcoin). Watch it here: https://youtu.be/YXtu3ZIje1g