Linked Questions

46
votes
2answers
9k 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 ...
24
votes
1answer
14k views

What is a hard fork?

When people talk about possible changes to how Bitcoin works they sometimes say a particular change would require a hard fork. What does that mean? Can a hard fork cause problems?
15
votes
5answers
10k views

Has a hard fork ever occurred?

BIP 50 describes the 2013 event in which a block chain fork persisted for several hours. Its first paragraph reads: A block that had a larger number of total transaction inputs than previously seen ...
8
votes
3answers
2k views

Can old coins be banned by a soft fork?

Satoshi Nakamoto is supposed to own 1.000.000 bitcoins on a thousands of wallets, and most of them are untouched since early blocks. This stake can potentially flood the market, so miners could ...
6
votes
2answers
350 views

Is there a difference between bytes and virtual bytes (vbytes)?

In an Optech newsletter, size is referred to using vbytes. Is there a difference between vbytes and bytes? If so, what is the difference?
6
votes
4answers
269 views

Can new types of transactions be included the current block chain?

I was putting an answer for this question together when I realised my idea would require a new type of transaction to be invented and included in blocks. Then I wondered how that could work. There ...
5
votes
6answers
1k views

can blocks remain capped to 1MB forever?

this is perhaps more of an economics question than a bitcoin question, but i'm wondering if it would be viable to leave the block size capped at 1MB for all time and simply let a series of rules ...
4
votes
2answers
423 views

What happen if some blocks are added simultaneously with same previous hash

In all of the blockchain samples that I see e.g. adilmoujahid, Savjee as I checked, they added previous Hash by creating a block. Suppose that, L is the current last block in a chain. Block A and ...
4
votes
3answers
346 views

What prevents miners from mining more bitcoin after 21million btc?

What prevents miners from mining more bitcoin after 21million btc was mined?
3
votes
1answer
1k views

What is “Emergent Consensus” as a Mining Pool Support proposal?

I would regularly check coin.dance/blocks for updates on Segregated Witness and Bitcoin Unlimited popularity among miners. Another proposal called "Emergent Consensus" has appeared. Could someone ...
3
votes
2answers
630 views

Why is it dangerous to hard fork the Bitcoin network?

In the blocksize debate it is often stated that hard forks are dangerous. This is sometimes supported by the claim that "people may lose money and must be protected". And that it's impossible to ...
3
votes
1answer
406 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 the ...
2
votes
1answer
241 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 ...
2
votes
2answers
6k views

Halving reward, price effects? [duplicate]

What is the case after halving reward takes place: Would bitcoin price gets double, since its harder to mine? Would Blockchain introduces more blocks (e.g: 1/5mins)?
2
votes
2answers
236 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 ...

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