Questions tagged [blockchain-fork]

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

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49
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2answers
11k views

What is the longest blockchain fork that has been orphaned to date?

The orphaned blocks view from BlockChain.info shows a recent fork of the blockchain (starting with block 173,928) that went four blocks long before being orphaned. Other than the controlled rewind ...
0
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1answer
44 views

How would a hard fork for a new key-pair/address generation algorithm be implemented practically?

If an upcoming hard fork entails a switch to new method for key-pair/address generation, how exactly is it going to be carried out? How would all the old addresses going to change to ones that are ...
2
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1answer
82 views

Does a hard fork need to include a soft fork as well?

Using these definitions of soft fork and hard fork: soft fork – tightening of the consensus rules, new blocks remain valid for old nodes hard fork – loosening of the consensus rules, new blocks might ...
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1answer
2k views

Online wallet to redeem pre-fork paper wallet for both Bitcoin and Bitcoin Cash

I have BTC (pre-fork) and now BCH(BCC) on a paper wallet. What's the best online wallet to transfer them into to ensure I retain both coins and also to be able to transact with them?
0
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1answer
43 views

I was wondering if Bitcoin Taproot is simply an upgrade or will it have its own coin as well? If so, where can I buy them?

I know Taproot is a soft fork, which basically means an upgrade. I see some forks have coins and some don't, I am lost on the difference and why. Litecoin is a fork and many others are that have coins ...
3
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1answer
196 views

Risk to Bitcoin balance when making Bitcoin Gold transactions

If Bitcoin Gold fails to implement replay protection, will I risk losing my Bitcoin when I make a Bitcoin Gold transaction? Assuming replay protection is not implemented properly, how can I protect ...
2
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1answer
37 views

Choosing main chain based on difficulty

If a node observes a fork in the bitcoin chain, then the node will choose the chain that has the highest difficulty (sum of difficulty in each block of the chain). But the difficulty changes only once ...
1
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1answer
59 views

How do full nodes get the information about stale blocks?

In Bitcoin, many forks occur when multiple miners mine blocks at the same time. Then there will be multiple blocks at the same block height. I was looking at the Bitcoin P2P developer guide at https://...
62
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5answers
27k views

What is a soft fork? What is a hard fork? What are their differences?

When people talk about possible changes to how Bitcoin works they sometimes say a particular change can be implemented as a soft fork. What does that mean? How does this compare to a hard fork?
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0answers
41 views

Will a hard fork be required to change timestamp fields?

In the protocol there are multiple timestamp fields with varying lengths. For example a 4 byte unix timestamp would overflow in the year 2106. Will a hard fork be needed to deal with this issue in the ...
45
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1answer
13k views

How does Bitcoin Cash implement replay protection?

Bitcoin Cash says that they are providing replay protection for their fork. How does this replay protection work?
0
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1answer
39 views

Will the miner be provided with reward if a hard fork occurs?

When will the miner be provide with reward(if at all) when a hard fork occurs? When will the miner be provide with reward(if at all) when a soft fork occurs?
1
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1answer
61 views

How are malicious forks resolved?

I understand that forks are resolved by opting in for the eventual longest chain, preferring the chain with the longest POW. But everything I read on this suggests it's just random chance or that the ...
0
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1answer
110 views

Why am i picking up 2 blockchains for my BTC address

So this is my address 38UPP6po1NJvNQoTavvTBzbRi1bKcyR7tZ And i am picking up 2 blockchains ,one for BTC and BCH ? I did a transfer a week ago and i am not sure why i cant see the funds in my coinbase ...
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0answers
31 views

Questions RE soft forks

I’m trying to understand how the Bitcoin network works a bit better and the main thing I’m having trouble with is forks, particularly soft forks. I have a few questions about how exactly a soft fork ...
1
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1answer
58 views

Can the forked be unforked?

So: BTC, BCH, BTG and BSV all trade at different prices/values. All have forked off from BTC and have different development teams, theories, practices, technology, etc. I noticed that when you look ...
2
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1answer
75 views

What if block N were based not on N-1 but on both N-2 and N-3?

If the bitcoin protocol were changed so that the merkle root from block N-1 were replaced in block N by the two roots of blocks N-2 and N-3, then it would become possible to mine 2 blocks at a time in ...
9
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1answer
2k views

When bitcoin forks, how do they decide which fork gets the original name?

Bitcoin has had a number of forks over the years. The biggest one was Bitcoin and Bitcoin Cash. Bitcoin seems to have won out in this fork, and is much more popular than Bitcoin Cash. However, how was ...
0
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0answers
18 views

How to fork Bitcoin easily [duplicate]

I want to create a fork/ new chain of Bitcoin which I can mine and have a wallet to send to another address to learn more about how Bitcoin works. Is there a very easy way to do this? Like can I just ...
1
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1answer
95 views

UASF, what do I need to do?

With the upcoming UASF activation what do I need to do to come out okay? I have my coins sitting on my Trezor in cold storage. If I just leave them as is, what happens? If I switch my Trezor to ...
1
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2answers
158 views

How to track UASF support?

It's easy to see that currently 50% of the hashrate supports Segwit. It's also simple to find that about 1000 nodes are supporting it. But I can't seem to figure out how significant that amount is, ...
1
vote
1answer
257 views

Does BIP148 (UASF) offer any replay attack protection?

Is there any protection against replay attacks in BIP148? Despite the popular name (UASF), it's effectively a hard fork (in the sense users with old nodes will be on a different chain), is there any ...
5
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1answer
331 views

What is it that makes BIP149 safer to activate than BIP148?

There are currently two BIPs floating to enable a "user activated softfork" of Segregated Witness. BIP148 is meant to activate by flag day on August 1st 2017 whereas enforcing nodes stop accepting ...
0
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1answer
45 views

Safe way to claim hard fork coin [closed]

let said ALice own 10 BTC at address "ABC", at block height 3,456,700, it was hard-forked to Bitcoin "Zaza". At block height 3,500,000. The stable version of Bitcoin"Zaza"...
1
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2answers
717 views

Can a blockchain's transactions be reversed?

Blockchains are often described as 'immutable' (meaning the history cannot be rewritten after the fact), but is this really true? How easy is it to change the history? I have read about the Ethereum ...
0
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1answer
45 views

What were some discussed and current potential issues with pre-forked Bitcoin coins from August 2017 that have never moved since then?

I was speaking to a friend that mentioned that there were issues with pre-forked Bitcoin coins from Aug 2017 that never moved. He wouldn't tell me exactly what the potential issue was, but what were ...
3
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2answers
308 views

Who is the decision body for forking a blockchain ledger?

Is it fair to compare the decision body responsible for forking a blockchain as 'escrow officers'? How can users of the blockchain network dare to the treat the distributed ledger as immutable as long ...
1
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2answers
174 views

Were anyone-can-spend transactions valid before SegWit?

Non-segwit nodes (legacy nodes) see segwit transactions as anyone-can-spend (ACS) transactions. It is clear that such a nodes can (and do) validate blocks containing ACS transactions, because the ...
0
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0answers
21 views

unconfirmed transaction 1/2fdlhhxj [duplicate]

I have seen a transaction in my wallet that was not made by me how can I stop it please it’s still on 1to6 unconfirmed
1
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3answers
155 views

How do we distinguish between BTC and BCH in an address?

Bitcoin.com has recently published an article about the DOJ seizure of Silk Road-related funds. The article states: From 1HQ3, 101 BTC were sent to BTC-e, the defunct Russian exchange. About 69,370 ...
0
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0answers
24 views

Most Energy-Efficient Way To Reactivate Disabled Operational Codes (Opcodes)?

Currently, there exist a number of operational codes (opcodes) within the bitcoin protocol that have been disabled for security reasons. These script functions of the bitcoin protocol were taken out ...
1
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1answer
49 views

How a transaction is permanently accepted by the blockchain?

If a miner A creates a block containing a transaction A and a miner B creates a block NOT containing the transaction A about at the same time, then some of the other miners will first receive the ...
1
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1answer
51 views

With the right technology, could the entire blockchain be rewritten?

Imagine that someone had access to an alien super computer such that they could mine any block in nanoseconds. At that point, could that person create a chain with the same BTC genesis block, generate ...
2
votes
1answer
107 views

What is a stale blockchain tip? Is it a blockchain tip missing the latest mined block?

Stale blocks and orphaned blocks are defined here. What is a stale blockchain tip? Is it a blockchain tip missing the latest mined block? Or is it a blockchain with a stale block (as defined in that ...
49
votes
2answers
21k views

What happens if two miners mine the next block at the same time?

The process of mining as described in the answer to this question is simultaneously repeated by multiple miners. Is it possible for two miners to find the next block at the same instant? If it is, ...
4
votes
1answer
294 views

When does a blockchain fork resolution happen?

I understand that forks are resolved by largest proof-of-work etc. but when do the miners decide to resolve a fork? Is it a question of network consensus or does each individual miner resolve at their ...
3
votes
1answer
97 views

Which blk*.dat file contains a particular block?

Is there a way to find out which blk*.dat file contains a particular block? For example, it would be useful to know which *.dat file contains block 478558, which is the point where BCH forked from BTC....
0
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1answer
428 views

Split BCH out of BTC and then BSV out of BCH? [closed]

I have an old Bitcoin wallet from before the BCH split. I think I can still split the BCH out of it, but then would I be able to split the BSV out of these BCH? If that's possible, is there a special ...
1
vote
1answer
124 views

An updated forkcoins tree chart (only blockchains)

Where can I find something conveying this information, but up to date? digraph { # rankdir = LR; splines = polyline; # Bitcoin is the original chain. node0 [label = "Bitcoin\n~15000 $ US ...
0
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0answers
19 views

What exactly is forking in cryptocurrency? [duplicate]

My understanding was that forking is essentially update made to the blockchain software associated with the cryptocurrency, until I came across this: A “fork” is the term used to describe a single ...
2
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1answer
86 views

Shorter Chains in blockdata

Assuming two blocks are published at exactly the same time, a race for the next block to be added to one of them begins, which eventually one chain will eventually win. My question: will the shorter ...
-2
votes
1answer
30 views

Has/will there ever been any new "Bitcoin Gold rush" similar to the hard forks that allowed you to "trick" your way to new coins? [closed]

A couple of years ago, there was this really unexpected and bizarre thing for a few months (or weeks?) where a bunch of Bitcoin hard forks were created, such as "Bitcoin Gold", whose only ...
1
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1answer
94 views

How can Forks and Orphan Blocks be used to attack a Blockchain?

So I'm trying to learn about the security aspects of Blockchains and one of the papers I'm reading (https://arxiv.org/pdf/1904.03487.pdf) states that Forks and Orphaned Blocks can be used to attack a ...
10
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1answer
7k views

What happens to coins after Bitcoin Cash fork?

I'm new to Bitcoin and I read that there is a fork going to happen on Aug 1st to create Bitcoin Cash (BCC). From https://ethereumprice.org/ethereum-classic-and-bitcoin-cash/?a=1&b=https://...
0
votes
1answer
110 views

how does GHOST protocol really work?

I am trying to wrap my head around GHOST protocol... I know it's too much to read, but not my fault. It's GHOST that's complicated (i guess) As I read, it's said that: instead of a longest chain ...
1
vote
2answers
243 views

Does a soft fork result in two different blockchain versions?

I've read the following: Both forks create a split, but a hard fork creates two blockchains and a soft fork is meant to result in one. Let's consider 2 situations: block size max limit is 1mb and ...
0
votes
1answer
73 views

Did the FIBRE protocol reduce the occurrence of chain forks?

I've just learned that Fibre protocol is used for really fast block propagation. My understanding is that if blocks are propagated faster, miners can more quickly continue to work on (what seems to ...
-2
votes
1answer
232 views

Possibility of occurring Fork in case of using Proof-of-Stake?

Regarding the fact that in Proof-of-Stake, a stakeholder will be elected randomly as the next validator in each epoch (or each round), logically, in each round there is only a single validator, and so ...
1
vote
1answer
167 views

how to make own coin with soft fork? [closed]

What I am looking to do is soft fork on litecoin and create my own coin! I know that I need to make a node but I can't find any process that shows me how to create my own coin.
1
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1answer
189 views

Do HTLC transactions work today or do they need a new soft-fork?

I thought that HTLCs were just a kind of a script construct that would allow to unlock funds for a period of time, which can be unlocked to anyone that provides the original string that matches the ...

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