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This tag should be used for questions regarding any split in the Bitcoin blockchain

4
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1answer
477 views

How can forks coexist even though only one of the is the longest chain?

We know Bitcoin has some forks like Bitcoin Cash and Litecoin. They make a new branch on chain, so how can they coexist without the shorter branches being discarded, and just the longest chain staying ...
0
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0answers
13 views

nLastPOWblock fork masternode

I'm trying to make fork masternode coin. At me all turned out, and works exactly that that moment when it is reached nLastPOWblock After that, generation of new blocks does not occur I noticed that in ...
0
votes
2answers
47 views

Why choose the longest chain before checking for double-spending?

Can we make the following changes to the current POW protocol to better avoid double-spending: a) For full/mining nodes that receive two chains, check if there are identical addresses that occur on ...
0
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0answers
31 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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0answers
76 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 ...
1
vote
1answer
29 views

Is it possible to append new blocks to a block of arbitrary age?

First of all, I'm aware of 51% attacks and how they work. Though, I was wondering, if Bitcoin and other blockchains allow appending cryptographically valid, new blocks to blocks of arbitrary age (if ...
0
votes
1answer
45 views

Hardfork development: reindexing stuck

I'm stuck with reindex issue. My little test hardfork work perfectly on test blockchain, but when I tried reindex previously downloaded bitcoin blockchain, it stuck (on different nodes it stuck on ...
2
votes
0answers
59 views

How to hard fork a altcoin? [closed]

I have created a altcoin using the reference of LTC and already 170k blocks were formed. Now i want to change the conformation time as well as i want the difficulty to start from base difficulty....
1
vote
2answers
42 views

What happens to old transactions in case of a fork?

I'm confused about forking. What happens to the 'old' version of a blockchain and related transactions/data in case of a fork. Can they still be deleted or does the new branch still depend on them to ...
0
votes
1answer
50 views

Hardfork development: after algorithm switching new blocks can't be mined

I'm struggling some issues with hardfork development. After switching network magic and versionbits at certain height Bitcoin algo should be switched from sha256 to groestl, but for some reason after ...
2
votes
1answer
46 views

Get transaction after certain (tx, block, time or other) using insight-api Bitcoin CASH

Now i can get all transactions by address (Bitcoin Cash) using this request to api: https://test-bch-insight.bitpay.com/api/txs/?address=qptaxxrqcz7qunclcvlcza9an6qlqqhzlya2d4e4fn But i want to get ...
1
vote
1answer
201 views

How to fork a cryptocurrency [closed]

I have cloned a coin and changed some variable to make it my own coin. I have launched it and have a few mining pools mining my coin. Going through the code I notice I have an error and the reward ...
1
vote
3answers
40 views

Why is a softfork unable to divide the network?

I was wondering why a soft fork cannot in principle divide the Bitcoin network as a hard fork can. I understand that a soft fork, by definition, involves only tightening the consensus rules, but the ...
1
vote
0answers
22 views

How to store bitcoins to easily claim hard forks later?

I had my bitcoins kept in a milti-signature, segwit address. After the fork of Bitcoin Cash, Gold, etc., I got to know that I can't claim my fork coins (or very difficult to claim, if possible). I ...
2
votes
2answers
69 views

How do the nodes divide after a hard fork? Soft Fork?

After a hard fork, what happens to the full nodes? Say 11,000 BTC full nodes existed prior to the fork. Do all 11,000 end up supporting both BCH and BTC? Or does BCH start building it's own network of ...
0
votes
1answer
62 views

what is forking attack? and different between forking attack and selfish mining?

I am a student who studies block-chain for these days. I have a question about forking attack and selfish mining in mining strategies as you see picture below I don't understand why miner should ...
1
vote
1answer
67 views

Would nine 1MB transactions potentially create havoc on the BitcoinCash network

It appears that the BitcoinCash chain is still on its original BCH main chain, and non-upgraded mines/exchanges/wallets can still transact there. What then would happen if nine (or more) 1MB ...
1
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0answers
24 views

Miners and Nodes: what are their role in protocol updates?

What are the different roles of miners and nodes for protocol updates (governance)? Which group is more important?
0
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0answers
17 views

I gave someone a bitcoin cash address to send btc and now it's not showing up on my bitcoin cash app [duplicate]

I am new to bitcoin so i made a mistake of sending my receiving address from bitcoin cash to an online casino I won money on. The bitcoin never showed up in the cash wallet app but when I look up the ...
1
vote
2answers
96 views

Any methods or tech to reduce the size of blockchain?

Are there any techs/methods applied or going to be applied on the bitcoin network to reduce the size of blockchain. It is really a burden for peroson to run a full-node especially on vps. Or what ...
1
vote
2answers
41 views

Did I lost the chance to get my BCH from Aug 2017 fork?

I had some BTC before the BCH fork in my wallet, but I didn't know I could claim the same quantity on BCH too, I've just read about how "hard fork" works :( Then I sell my BTC, that means now I ...
0
votes
1answer
67 views

Explanation of probability of forks in the Bitcoin blockchain

I am reading this paper on how information is propagated on the Bitcoin network. The authors present a model to predict the rate at which forks occur in the blockchain which is given as below Here, F ...
0
votes
1answer
14 views

Is it possible to copy BTC balances of only some addresses while forking

I want to fork a Blockchain for private use, however I want to keep only balance of some known adresses for example if my adresses are @A(10BTC), @B(20BTC), @C(30BTC) I want to see same adresses with ...
2
votes
2answers
75 views

Does a 2009 client sync the whole bitcoin blockchain

So does a 2009 client sync the whole bitcoin blockchain and does the temporary split of 2013 have any impact on that?
3
votes
1answer
69 views

Why is wif prefix 0x80 more than pubKeyHash prefix

I forked a coin and found that whatever I put in pubKeyHash prefix, I need to add 0x80 to it, to calculate wif prefix and hence generate an address keypair, i.e address and private key corresponding ...
-2
votes
1answer
42 views

How to make hardfork? [closed]

I understand what is hardfork in theory. Hardfork happens, when the consensus algorithm changes (if I'm wrong, correct me please). Ok, with theory everything is clear, but what about technical side of ...
0
votes
0answers
50 views

Monero hardforks to kill off ASIC manufacturers, when was the last time something similar happen to another coin?

In the recent news, Monero hardforks to kill off ASIC manufacturers like Bitmain. When was the last time a similar thing happen where cyptocurrency devs changed the mining algorithm to deter a large ...
0
votes
1answer
34 views

How Multisignature Wallets are affected in case of a hard-fork?

In an event of forking, are there any special circumstances involving multisig wallets? I am asking this because Coinbase says they do not support forks and multisig wallets? Below is a quote from ...
0
votes
4answers
82 views

What would happen if two miners were mining two blocks with two different set of transactions?

If two miners picked from the mempool two different sets of transactions, that were not dependent on each other. Then could both miners, mine both blocks and not create a fork? So miner 1 finishes ...
0
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0answers
26 views

APIs for new bitcoin forks

Is there any api providers to access blockchain data of new bitcoin forks? In my search, I could only find apis for btc and bch.
0
votes
1answer
26 views

Is it possible to copy transactions between Bitcoin's forks blockchain?

Do Bitcoin forks share the same transaction protocol after the fork? If so, is it possible to copy/ duplicate a transaction that uses common input transactions in the other blockchain? Let me explain ...
0
votes
1answer
539 views

How to correctly set attributes for block hash and nBits in PIVX Fork?

I've cloned PIVX(basically a DASH fork) and modified basic parameters. It compiles fine. When I'm trying to run it the server starts and the debug log file shows following errors: ERROR: ...
3
votes
1answer
40 views

Is this a valid scenario in blockchain?

Is this a valid case in blockchain? if yes whether the reward for t1 is shared and if not, which block will be invalidated or why not everyone will prefer to solve the block with a single transaction
1
vote
2answers
111 views

How did Bitcoin Cash fork from Bitcoin?

I was wondering how it was possible because of the following thinking: Let's assume that Bitcoin Cash's hashpower is smaller than Bitcoin's. Then they would start mining at the same point in the ...
0
votes
0answers
106 views

ERROR: AcceptBlock() : incorrect proof of work (DGW pre-fork) - 0.000732

Hi am trying to upgrade a wallet for a coin it is based on dash going from 10 to dash 11 and i got this error when trying to sync fresh any help thank you 2018-02-18 17:56:46 2 addresses found from ...
0
votes
1answer
48 views

Is it likely that bitcoin will implement important changes in the future? [closed]

Bitcoin is still the biggest cryptocurrency in terms of market cap, and it will always be the first one to solve some of the most fundamental problems around the implementation of a cryptographic coin....
0
votes
1answer
27 views

While creating new crypto using fork need to generate smart contract? [closed]

I have 2 questions for creating nee crypto currency using fork. 1.) I have created one new crypto coin which is called mindcoin, now should i generate smart contract for deployment my currency in ...
0
votes
1answer
43 views

How do exchange services provide forked coins to their customers for free?

I know we can get forked coins by donating to ICO teams but I don't think the exchange services donte to them. So I really consider how to get forked coins for free
0
votes
2answers
55 views

Mining Fee for the blocks that are orphaned

Suppose a miner mined a block and the block got added in the main chain of the block chain. He must have got his mining fee then. Now suppose that due to a fork sometimes later, the block that he ...
5
votes
4answers
448 views

Why do we need a genesis block?

In bitcoin, a blockchain always starts at the unique genesis block. Beyond that point there can be forks, and only when it is clear which branch will grow fastest (or if it has grown enough), we can ...
-1
votes
1answer
61 views

How do coins upgrade there blockchain from 10v or 11v to 12v

Hi am a 15 year old who wants to do this for a living so i don't read much so i learn better by doing it. So i wanted to upgrade a wallet to a newer version. So i did it all after my 1000th attempt it ...
0
votes
1answer
152 views

bitcoin fork getblocktemplate keeps reporting downloading blocks

I got my own hard fork of bitcoin from forkgen.tech. The fork has happened after block 506016. I have 2 nodes running and after syncing up to block 506016, I want to run a pool server. But the ...
0
votes
1answer
66 views

I have set blockgeneration time to 15 second but blocks are generated with the speed of 1 block per min(avg)

I have forked Litcoin 0.8v to make my own costomized coin(learning purpose), with some changes in parameters: 1. Total no of coins to be mined = 270,000,000. 2. Block formation time = 15sec. 3. ...
0
votes
0answers
16 views

Sendig bitcoin created before the fork of aug 2017

Does anyone have any experience sending bitcoin, prior to the hard fork of August 2017 to a nano S adress. Is the nano S able to make the split between BCH and BTC?
0
votes
1answer
46 views

Why can't a Bitcoin fork take over?

According to this question's answers, the difficulty is entirely a result of previous info on a blockchain: How is difficulty calculated? So why can't someone simply fork an earlier state of Bitcoin'...
0
votes
2answers
677 views

What type of fork is Litecoin?

Is Litecoin classified as either a hard fork or soft fork? If neither, what is considered as?
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2answers
67 views

Which one is more effective for attacking the system, controlling 51% of the mining power or 51% of the full nodes?

I used to think it is the miner who verify the transaction, but it turns out this is really a joint work by the miner and the full nodes; the miner broadcasts the newly discovered block, which ...
0
votes
0answers
103 views

Claim BTG from my BTC (Electrum)

I have installed a Bitcoin Gold full node official wallet on a separate pc. I have used https://bitinfocharts.com/bitcoin%20gold/explorer/ and filled in the old bitcoin address. It has a transaction ...
0
votes
1answer
107 views

Bitcoin ABC, When Fed Bitcoin Core Chain Syncs to Aug 1 6:23AM 2017, Then Freezes

I've installed Bitcoin ABC, set bitcoin.conf to point at a copy of my directory from Bitcoin Core, and let it sync with the network. All was well until it froze at the fork (Aug 1, 2017, 6:23AM). ...
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0answers
32 views

How to not miss out on forks

When the bitcoin cash fork happened, Kraken supported this. However, they are not consistently supporting other forks (e.g. super bitcoin, bitcoin gold). I don't want to go into specifics of ...