Linked Questions
12 questions linked to/from What are checkpoints?
39
votes
4
answers
68k
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How to fork Bitcoin and build own cryptocurrency [closed]
Is there any step-by-step tutorial about how to build own cryptocurrency based on Bitcoin code?
- 609
6
votes
3
answers
715
views
Why doesn't bitcoin place additional constraints on competing block chain forks, other than length of chain? (e.g., time and confirmation count)
In Bitcoin's proof-of-work system, consensus on which chain of blocks should be considered the "true" block chain is based only(?) on which chain is longer.
Accordingly, to quote a nicely written ...
- 337
6
votes
2
answers
1k
views
51% attack and rewriting to the latest checkpoint
This is not a question about the consequence of a 51% on the price nor as to the motivation of the attacker. Let say we don't care that it's not realistic and we don't care that the attacker wouldn't ...
- 316
3
votes
4
answers
465
views
Why miners need to broadcast blocks that contains full transactions in Bitcoin?
Does anyone know why Bitcoin requires miners to broadcast blocks that contains full transactions?
When a user want to make a payment on Bitcion, he/she needs to broadcast a signed transaction, and ...
Jan Leo
3
votes
4
answers
600
views
I want to start mining new blockchain (exactly as Satoshi did in 2009) for testing purpose
I will mine myself ONLY so difficulty will be always in 1 range so CPU is enough for this task
So my question is: how to setup bitcoin core 0.12 to start mining with CPU new blockchain ?
If I type ...
- 31
1
vote
1
answer
892
views
Altcoin peers do not sync with each other
I created two altcoin peers and they can add blocks to genesis block. However their blockchains do not sync with each other!
The only way let the block merge is to stop a peer and restart the peer.
...
- 633
2
votes
1
answer
197
views
Does Bitcoin Core validate signatures by default?
There have been claims recently of Bitcoin Core not validating the signatures in a block by default. If this is true, can Bitcoin Core even claim to be a full node?
- 671
1
vote
1
answer
573
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how to insert new checkpoints in a bitcoin clone
I know Checkpoints are old blocks hardcoded into the source: What are checkpoints?
{11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
{33333, uint256S("...
- 15
1
vote
1
answer
125
views
Would it be possible to overtake the network by running a secluded mining operation for many years?
I have a scenario. Let's say I start my own Bitcoin mining on a secluded network. I leave this to mine for many years or even pass it down to future generations.
To the very point that my chain is ...
- 13
1
vote
1
answer
188
views
What kind of attacks do exactly check-points prevent?
I'm aware of this post and this one.
If it's used to prevent an attacker from forking old blocks (or chain), then a client can detect it because the fork length would be shorter than the length of ...
- 291
2
votes
1
answer
133
views
Can a two-block-sized chain override the main chain?
After i read this:
Honest generators only build onto a block (by referencing it in blocks they create) if it is the latest block in the longest valid chain. "Length" is calculated as total combined ...
- 121
0
votes
1
answer
69
views
Block Chain length/size may one day get unwieldy to compute
Is it possible that the length of the existing block chain will one day become unwieldy to compute? Would it make more sense that the chain would somehow be rolled up like normal bank ledgers do with ...
- 21