A fork is a project that splits from an earlier project and goes in a slightly different direction.

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What will happen to my bitcoin if both Core and XT remain indefinitely?

I have some bitcoin in wallets and online accounts in multiple places. What will happen to this bitcoin if both Core and XT remain indefinitely? Will I own twice as much bitcoin, just in two different ...
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1answer
47 views

What would you do while a hard fork lasts?

It is conceivable (though generally buried with cognitive dissonance, I imagine) that a hard fork might not get resolved. This almost happened once before, and the miners picked the fork that solved ...
2
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1answer
39 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 ...
4
votes
1answer
387 views

What is SPV mining, and how did it (inadvertently) cause the fork after BIP66 was activated?

I'm curious to hear an in-depth explanation of the hard fork and how it was caused; I've heard/read a great deal but I'm lacking a cohesive explanation.
3
votes
2answers
38 views

Why can't the block size upgrade be trialed on testnet with an organised “stress test”

A stress test was run on mainnet to see the effect of exponential demand in Tx volume. Why can't a testnet "stress test" be organised to look at the implications of the 20Mb block size (and other ...
2
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2answers
87 views

What can a dishonest node do (or try to do)?

Except this kind of attacks: https://en.bitcoin.it/wiki/Double-spending For example can he simply create a new block that includes some invented transactions that steal money from real address? ...
2
votes
2answers
61 views

Valid fork in regtest - Change blockchain via RPC?

I've created a regtest network consisting of 2 nodes - node0 & node1. I'd like to have a fork on the common blockchain and seemingly achieved it by doing so: nodes start node0 adds node1 via ...
2
votes
1answer
98 views

Do new SIGHASH types need a hard fork or a soft fork?

There have been a few new sighash types proposed. SIGHASH_NORMALIZED : Use a 'normalized' TXID in the inputs when serializing for signing. This normalized transaction id is calculated by removing ...
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0answers
46 views

How to do a Hard Fork in a Quark Coin?

Good Day, I am reviving a dead Quark Coin named Particle (XPR), I have implemented changes (MAJOR) so how to do a Hard Fork based on Blocks so the new changes take place without changing the Genesis ...
3
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1answer
337 views

Can a shorter chain overcome a longer one?

Could a dominating chain fork actually be shorter (in blocks) than its abandoned predecessor? Under what circumstances could this happen?
2
votes
2answers
155 views

Is there any way to make an UTXO that cannot be spent until a certain block #?

In bitcoin, each transaction has an nLockTime integer to specify the earliest allowed block number/time that the transaction can be added to the blockchain. In addition, each transaction input has an ...
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2answers
96 views

Can new OP codes be added with a soft fork?

I understand that P2SH transaction types were added "softly" by repurposing a Tx message that is already valid, so old nodes won't reject them in blocks. Is there a similar method to adding new ...
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votes
3answers
920 views

What is a soft fork?

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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1answer
381 views

Detailed guide on how to Create a Litecoin Fork, With Pre-mine instructions [closed]

I need a Detailed guide on how to Create a Litecoin Fork, With Pre-mine instructions, I would be very grateful if someone posted a comprehensive guide on how to Create a Litecoin software fork, with a ...
2
votes
2answers
131 views

What if the execution time for an alt coin script exceeds the block time?

I don't know when and how often a script is executed, but it seems to me that there would be a problem if a single script (or a sum of all scripts in a block) exceeds the time it takes to be included ...
3
votes
1answer
307 views

When did litecoin fork bitcoin?

I'm looking for the git tag of Bitcoin at the time of the fork as well as litecoin after the fork
6
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2answers
107 views

When will a block not be forwarded?

I'm currently trying to detect blockchain forks and I noticed that even when dumping all blocks I get to a separate file I seem to miss a few. Specifically I'm looking for the blocks marked as ...
31
votes
2answers
4k 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 ...
3
votes
1answer
203 views

How are transactions in discarded forks merged back into the blockchain?

It sounds like transactions in discarded blocks are propagated back to the network to be included in the next block to be generated, is that the case? If so, is that triggered in the client when it ...