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Questions tagged [altcoin]

This tag should be used for questions that are relevant to most or all blockchain based cryptocurrencies. If your question is specific to one altcoin, please use/create the tag for that altcoin.

6
votes
3answers
21k views

Where can I find historical price of altcoins?

Quandl has some dataset of altcoins but the history is small and unfortunately prices are not updated. CoinMarketCap JSON API is great but I understand it provides the lastest update only. I have ...
4
votes
1answer
428 views

Why is a short blocktime considered to be unsafe?

I've heard a couple of times "a shorter blocktime is unsafe," (first about Litecoin and now Ethereum) but never understood why. Is it the higher probability of a fork? Why do some people consider a ...
11
votes
2answers
4k views

How is a side-chain merging back to Bitcoin chain protected against double-spend? Where are the side-chain mining fees?

I am struggling to understand the concept of "side-chains" that's discussed a lot lately, but never trully explained. How I understand "side-chain": it's an altcoin, with a separate blockchain, with ...
2
votes
2answers
1k views

Where do i start for creating altcoin?

Where do i start for creating a bitcoin altcoin? Like for changing block times, names, coin max, etc? I know what i want to change but I don't know where to change the code for the basic things ...
0
votes
2answers
158 views

Is there a chance to return all of the lost money invested when the chart goes back up? [closed]

Let say, for example, I invested $3 to buy 21 TRX (Tron Tokens), usually a token under Ethereum platform but still working the same as other altcoins when the value goes high, where the price is ...
-1
votes
1answer
1k views

Cannot mine Genesis / First Block (PIVX Fork / Clone)

Whatever I do, I am unable to mine the 1st block after the genesis block. All the while, I have assumed that I have mined the Genesis block, and I am unable to mine the 1st block using "setgenerate ...
3
votes
2answers
12k views

Isracoin: What hashrate should I be getting with intel core i5?

I'm only getting 13 kh/s using minerd with intel i5 and the lowfeemining.org pool. Shouldn't I be getting a better hashrate?
1
vote
1answer
103 views

how is the value of crypto coin decided

Can any one help me with required information how a newly created coin value is assigned ? and how does the rate fluctuations occur
1
vote
1answer
900 views

New altcoin. Cpuminer gives me “booo”

I made a new altcoin based on "INSaNe" https://github.com/CryptoCoderz/INSN I changed genesis hashes using this code: if (true && (genesis.GetHash() != hashGenesisBlock)) { ...
1
vote
1answer
52 views

How prevalent are coin attacks with botique altcoins?

I have deployed several altcoins using various PoW algorithms on my LAN for my buddies and I to mine/learn from. We ultimately want to go the distance of deploying an altcoin to the world, writing the ...
1
vote
2answers
2k views

Trading bot - what is the maximum load an exchange server can take?

I did create my own altcoins trading bot in Python3. The bot trades on the minute market and is multi-threaded. Which makes that a lot of requests are send to the server of the exchange. I'm (was) ...
0
votes
1answer
123 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 = ...
5
votes
5answers
2k views

What advantages do “alt-coins” have over bitcoin?

I'm struggling to see the importance of alt-coins. It seems to me that one of the major selling points of the various alt-coins is their quicker confirmation times. The common argument is: this is ...
9
votes
2answers
900 views

Atomic cross-chain trading

Atomic cross-chain trading describes a method where two parties, owning different crypto currencies, can safely exchange the crypto currencies without an intermediary. The method is described in the ...
3
votes
2answers
6k views

How to create a bootstrap.dat file? [duplicate]

I want to create a new bootstrap.dat file for a Dogecoin. How do this kind of files are created and how can I create one? What tools should I use? any answers/links/references are appreciated. I have ...
2
votes
1answer
1k views

Altcoin (Litecoin fork) creation. No synchronisation

i m trying to create an altcoin from the current Litecoin master branch on github. Its Litecoin in the version of 0.15.1. By editing some parameter in chainparams.cpp i m able to create my genesis ...
5
votes
2answers
1k views

Why is it harder to compute nonce for a hash with a certain number zero prefixes than it is for any other hash?

Based on my rudimentary understanding of Bitcoins and altcoins, network difficulty is adjusted by asking the network to target a hash smaller than a specific number, which translates to calculating ...
5
votes
1answer
1k views

Is Ethereum essentially Bitcoin with Turing-complete Script?

Is Ethereum essentially Bitcoin with a Turing-complete scripting language and, if I understand correctly, where the script to be executed (not its hash) is placed in the Ethereum blockchain? If so, ...
4
votes
1answer
1k views

What precisely are vSeeds “seednodes”, how to they work, how to create one for a new network?

In this question we have a superficial explanation of vSeeds (seednodes), from the Bitcoin wiki, we have: DNS Addresses Upon startup, if peer node discovery is needed, the client then issues DNS ...
4
votes
1answer
153 views

Is there a website that compares the features of different cryptocoins?

Is there any website where I can find a comparison of different altcoins by features? I'm not interested in hashrate, price, difficulty, but rather in implemented features such as: Used difficulty ...
3
votes
3answers
13k views

Where do these coins gain their value?

I have been mining coins for a long time (started with BTC/LTC years ago, moved to altcoins recently) and have realized I am not clear on the actual source of the value. Do the exchanges deem the ...
4
votes
2answers
2k views

I want to generate a BIP32 version number for Namecoin and other altcoins

I want to make a BIP32 wallet for Namecoin and other alt coins. I just need to figure out how to generate a a public and private version number so that the BIP32 extended key prefix is something that ...
4
votes
5answers
44k views

I've tried everything from mining bitcoin to litecoin to other altcoins…why do I have no luck?

I am a beginner in the blossoming culture of crypto-currency, and unfortunately, it's beginning to feel as if 2015 is too late of a year for a laptop-user such as I to be able to start mining. I'm ...
2
votes
1answer
1k views

What is Delegated Proof of Stake (DPoS)?

I know that it is a consensus algorithm that is different from Proof of Work (PoW) and Proof of Stake (PoS) which is used in a few blockchains including but not limited to STEEM, BitShares and ARK, ...
2
votes
2answers
110 views

Are Bitcoin signatures currency specific?

I am wondering whether signatures for Bitcoin-like currencies are currency specific, or given one program that can sign a Bitcoin raw/JSON transaction one can create valid signatures for other coins ...
3
votes
1answer
3k views

How to establish connection for mining testnet blocks on newly created altcoin

I was trying to clone an altcoin for educational purposes. I am total newby and I've got some plans to implement different PoW and continue working on cryto-currencies. I followed the cloning guide ...
2
votes
1answer
18k views

Which coin to mine with CPU long-term [closed]

I have a machine with 48 CPU cores, running Linux. I would like to mine for a coin, not to sell immediately, but in several months when the value has increased (hopefully). I don't want to keep ...
2
votes
1answer
917 views

digitalcoin wallet won't sync

I've had my digitalcoin wallet open for a few days now, hoping it would eventually sync back up but it's seemingly stuck, not necessarily at a specific block, but around 3 days back, whichever block ...
1
vote
1answer
544 views

Altcoin Genesis block fails after changing block reward

I have been struggling with this issue for a week. I have created an altcoin forking litecoin code, i have mined genesis block, the compiled code works fine with 50*COIN genesis block reward. When i ...
1
vote
3answers
1k views

do you need to independently create a genesis block for a new altcoin?

So if one was to try to create an altcoin that was a fork of the bitcoin code would he/she have to create a genesis block independently first? static CBlock CreateGenesisBlock(uint32_t nTime, ...
1
vote
1answer
1k views

How do I create a new genesis block for an altcoin?

I'm trying to clone the Blackcoin sourcecode just for the hell of it but I can't seem to generate a genesis block. I can do it on normal coins, but not here. The Blackcoin developers seem to have ...
0
votes
1answer
846 views

CheckProofOfWork() Linux error on old altcoins

I've seen the following error on Linnux online with several old altcoins now, the one below is UFO coin. It will sync exactly 500 blocks and then throw the following error, if I restart the client the ...
0
votes
1answer
844 views

How to setup nameserver for dns seeder?

I am confused setting up nameserver to run with dnsseeder. I modified dnsseeder to work with my new altcoin. Here is what is did. I have vps.example.com setup with amazon ec2 and i compiled ...
0
votes
1answer
1k views

ERROR: ReadBlockFromDisk: Errors in block header at CBlockDiskPos(nFile=0, nPos=8)

For study and fun I try to create my own altcoin. I forked Litecoin, removed checkpoints, changed nTime, *pszTimestamp, noNce and hashed new hashes for genesis block in main net, testnet and ...