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Questions tagged [altcoin-development]

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1answer
37 views

ERROR: AcceptBlock: high-hash, proof of work failed (code 16)

I followed this medium link to create a coin just like bitcoin . https://medium.com/@jordan.baczuk/how-to-fork-bitcoin-c39139506443 Based on this tutorial i update DEFAULT_MAX_TIP_AGE to int64_t ...
-1
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0answers
21 views

Having trouble Switching cryptocurrency back to POW after POS ends

Hi ive recently Forked a Crypto-currency for fun and learning purposes, this coin is based on PIVX and I have set the last PoW block as block (999), currently I have a problem at block 2600, where ...
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0answers
17 views

How To Define New BUILD version for the new POS altCoin?

I had made new POS based altcoin for learning purpose, now i want to update it's version and build date which is right now showing to be that of the Okcash which i forked to make new POS based Altcoin....
1
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1answer
62 views

How can I simulate ProofOfStake (PoS) for a testnet (clone of Pivx)?

After the end of PoW blocks, I am unable to mine using PoS. Here is my setup. 1) Server with the following config file. server=1 daemon=1 listen=1 rpcuser=user rpcpassword=password 2) Two clients ...
0
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1answer
62 views

How to start Proof-of-stake phase after pre-mining the coin in Proof-of-work phase?

I am learning to develop a new cryptocurrency on my own, for the same i decided to develop a Proof-Of-Stake coin, I forked the Okcash for this purpose. And was able to change the coin according to my ...
1
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1answer
97 views

Premine coins from genesis block are gone after one transaction from account/wallet

Please check the whole question once before giving negative marking or Mark as duplicate of Why can’t the genesis block coinbase be spent? Why I cannot get transaction from genesis block [duplicate]...
-1
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0answers
32 views

Errors in block header at CBlockDiskPos(nFile=0, nPos=8) forking Monacoin

I'm trying to run some tests forking Monacoin. After I generate the genesis block, I get this error in the debug.log file. Errors in block header at CBlockDiskPos(nFile=0, nPos=8) Which of course ...
1
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1answer
38 views

Blockchain gets stucked if no blocks are mined

Yesterday I decided to fork a project, just for fun and to learn more about it. So, I forked a project, I generated my own genesis block, changed timestamps, nounce, keys, reset the min chain work. ...
0
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1answer
51 views

Unwanted peers connecting to Altcoin

I am building an altcoin using the litecoin source code. I have removed all of the Emplace Seed calls in chainparams.cpp for DNS seeding, changed my default node communication port to port 421 and ...
0
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1answer
112 views

Need Help with Gitian-Builder - Missing Signer Error

I'm having a hard time finishing this project. I'm very frustrated and I really need your help. I'm trying to create the QT wallet for Windows & Linux. I have already cloned a masternode and I'...
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0answers
43 views

Altcoin Fork: Wallet - Error opening Block Database

I forked a coin based on Banq. I changed everything and all worked fine. I could mine, blocks were syncing well without any problem etc. The problem comes when I set up the masternodes, I did setup ...
0
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1answer
67 views

Altcoin: Send/receive transactions between nodes have high failure rate

I've noticed that an unusually high number of my attempted send transactions between my nodes (which is currently only 6 at most, but never less than 4) will not broadcast regardless of the amount of ...
0
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0answers
183 views

Problem creating altcoin with masternodes

I forked an altcoin with masternodes to learn how to clone an altcoin and also to understand it more technically. So I forked one altcoin, changed everything and all worked fine. I could mine, blocks ...
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0answers
36 views

How can a miner know how many blocks mined by him?

I am working on an altcoin based on bitcoin-core, version 0.12.1 (this version including setgenerate). Is their an option for a miner to know (using bitcoin-cli) how many blocks mined by him (after ...
-1
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1answer
109 views

How to go PoS once PoW ends?

I cloned a test coin from another altcoin for learning purpose. This had lastPoWBlock as 400 and i was able to premine using cpu miner but my chain stops at 400 blocks. It should be a PoS after 400 ...
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2answers
341 views

hash dosent match nbits

Im trying to clone a coin and I created a genesis block but when I run the wallet, it dosent start.. When I go to the log file, I see this error and I honestly dont know how to solve the problem. How ...
1
vote
1answer
152 views

Altcoin - genesis block - TypeError: __init__() takes exactly 2 arguments (3 given)

I'm trying to use the genesis script from innova to generate a genesis block of Xevan_hash https://github.com/innovacoin/GenesisH0/blob/master/genesis.py I'm using these parameters: python genesis....
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0answers
260 views

How to mine a masternode altcoin fork without “setgenerate”-feature in wallet?

I´m doing some educational altcoin development (for fun, NOT for money) and I have a similar problem like the guy in this thread: New altcoin. Cpuminer gives me "booo" I forked this coin: ...
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0answers
130 views

Failed to Build Bitcoin-Qt

The error relate to UPnP as show below. Please kindly help solve the issue. Thank you! C:\Coin>mingw32-make -f Makefile.Release c:\Qt\4.8.6\bin\rcc.exe -name bitcoin src\qt\bitcoin.qrc -o ...
0
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0answers
95 views

Base58 mismatch error

I am trying to run some tests on my altcoin, it says base58 mismatch. What is this error? $ ./src/test/test_altcoin Running 262 test cases... test/base58_tests.cpp:164: error: in "base58_tests/...
0
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0answers
70 views

LitecoinJ fork to altcoinJ Could not resolve dependencies

I am trying to fork litecoinJ for an altcoin because they are both using a similar algorithm (scrypt) using Ubuntu 16.04. This is so I may build and android wallet for it. To build the project, I use ...
1
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1answer
155 views

how to insert new checkpoints in a bitcoin clone

I know Checkpoints are old blocks hardcoded into the source: What are checkpoints? {11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")}, {33333, uint256S("...
0
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0answers
19 views

cloning bitcoin how to set coin limit [duplicate]

I have changed the amount of coins to be mined, to be 1000 but looks did not work, I have already 8000 coins mined, can someone explain why it is not working? main.h static const int64 MAX_MONEY = ...
0
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2answers
204 views

How to create a simple lightweight wallet (without mining) for an Altcoin

I am trying to create a wallet using electrum for an altcoin that uses the Scrypt algorithm. I am looking around for tutorials that can show a step by step process on how to create a simple wallet for ...
0
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1answer
97 views

cloning bitcoin MAX_MONEY not working [duplicate]

I have changed the amount of coins to be mined, to be 1000 but looks did not work, I have already 8000 coins mined, can someone explain why it is not working? main.h static const int64 MAX_MONEY = ...
0
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1answer
50 views

cloning bitcoin how bitcoin find new nodes

I am studying blockchain, cpp and crypto so I cloned bitcoin and created a new altcoin. everything it is working fine as I expected, but i have some questions which i could not find a answer. the ...
0
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0answers
289 views

Problem mining Dash clone

First of all I want to clarify that I don't want to create another dash altcoin clone, I want to understand the code and be able to modify it for educational purposes. I cloned the dash's code, I ...
1
vote
1answer
268 views

Solo mining on created altcoin: not able to create block

I have forked the code of an altcoin to play with the param and understand the process Source here. Now I want to solo mine to create the blocks. The miner is on my PC and the server on a Ubuntu 16....
0
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1answer
330 views

Fork Dash - New coin problems

Currently I am doing my final year project by forking the Dash code and generate a new coin from that. I had read lots of tutorial online and follow the steps as well. First, I had generate the ...
0
votes
1answer
256 views

How to set up a private chain/local testnet : reverse engineering the blockchain code

Long story short, I want to set up a private chain/a testnet blockchain that can run locally just to fiddle and play with it just to learn how it works. So I have a general understanding of how things ...
0
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0answers
480 views

Dash Test Coin Error: CheckProofOfWork(): hash doesn't match nBits

I'm working on a test clone of the Dash coin on my computer to learn more about how cryptocurrency works. I have Dashd and DashCLI running on a VPS. When I run a desktop wallet I compiled, I am able ...
0
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1answer
185 views

QT-Wallet not sync properly for altcoin

I tried to create altcoin using litecoin source code. I am able to generate genesis block for same. After setup on ubuntu VPS qt wallet connect to server and disconnect within seconds. Please help me ...
0
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0answers
51 views

2 nodes connected to eachother only showing outbound?

After setting up 2 separate VPS' (Ubuntu 16.04) I can't seem to connected them succesfully. They see each other, ports are open, but when running altcoin-cli getaddednodeinfo or getpeerinfo, they ...
1
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1answer
90 views

No .altcoin directory being generated

I am trying to create a genesis block for a personal play coin. I get the correct output of assertion failed. However when compiling I noticed the ./altcoin folder is not created at all.
0
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0answers
50 views

How to mine a coin with coind? [duplicate]

I created a altcoin that uses PoS and PoW. My coin has 0 blocks because it has no miners. How can I configure coind to start mining coins? It seems like the setgenerate command was removed awhile ago,...
0
votes
1answer
872 views

How to enable mining on daemon?

I forked bitocin and created a altcoin. Now I am running a node of it. There are currently 0 blocks because there are no miners. How can I enable mining on bitcoind? I tried adding gen=1 with config,...
0
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2answers
144 views

Determining the genesis transaction value or genesis_tx

Is there a way to determine the genesis transaction (genesis_tx) hash? I know the genesis block number but how do you determine genesis_tx? I am looking for this hash for an altcoin which was forked ...
0
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1answer
252 views

Understanding the iquidus API settings

I am trying to understand what values I am being asked for in the settings.json to install the block explorer for Iquidus. I know how to get the genesis block as I have hard coded it when I did a fork ...
0
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1answer
983 views

Iquidus JSON settings for Blockchain Explorer

I did a fork from litecoin into my own altcoin and I am trying to get it on a blockchain explorer to run realtime on a website. I chose an open source blockchain explorer called Iquidus which was ...
0
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1answer
1k views

How to create a new genesis block using CreateGenesisBlock() function

I'm trying to create a new genesis block, you know for science. I saw a lot of write ups online but most of them seem kinda outdated. I found the function CreateGenesisBlock() in the source code. ...
0
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0answers
314 views

Bitcoin clone, node won't sync in main chain

I create a clone of bitcoin change some setting like port, and run a network of 4 nodes by docker to test and learn. When I run it using -regtest, every things goes well I can generate blocks and node ...
0
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0answers
383 views

Mining first block of altcoin

I have created a forked altcoin for learning purposes. I have created a new merkle, hash, nNonce. When I try to mine the first block using a cpu miner for neoscrypt, I am not able to get it to run. ...
2
votes
1answer
220 views

How do new Cryptocurrencies prevent a 51% attack?

I've seen similar questions, but not specifically in reference to new altcoins. When a new cryptocurrency is released, the developer(s) have limited amounts of resources. What prevents a group from ...
0
votes
1answer
80 views

Viewing total number of coins mined for an Altcoin

I am a newbie to crypt-currencies so for school, I forked a coin from litecoin to help me understand how it works and so far, I got it to work using a VPS with some other friends mining on it. I am ...
3
votes
1answer
1k views

Forking PIVX - ERROR: CheckBlockHeader() : proof of work failed

I have forked PIVX and generated new genesis block hash, merkle root and nonce, and changed the rewards parameters. It compiles fine and the daemon starts, I have even got 2 nodes connected, but ...
0
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0answers
56 views

what this line of code mean?

I would like to know what this number 486604799 and ScriptNum(4) mean this line: txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>(...
0
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1answer
3k views

Build a wallet for Android and iOS for a self-made cryptocurrency

I've built a cryptocurrency of my own using this video guide. I did the first 4 steps out of 6, as the 5th level is about building a wallet for Windows platform. I have started creating this ...
0
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2answers
270 views

How to mine your own Bitcoin fork?

I have my own Bitcoin fork. I have the src and I have the Linux, Mac and Windows clients. The Windows client is using Bitcoin Core for the wallet. How do I go about mining the fork I created? I have ...
0
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0answers
137 views

howto put first amount of altcoin into network?

if you clone another cryptocurrency and generate a new genesis block, starting a new coin with balance of zero, how should you put the first amount of money into the network. For example, I want my ...
2
votes
1answer
318 views

Why cant my Altcoin Regnet create first 100 blocks?

I have modified bitcoin source code for my altcoin. I have successfully created genesis block, merkel root, noonce and daemon is working well. I have tweaked number of coins per day, total coins etc.. ...