Linked Questions

16
votes
5answers
2k views

What can xxxCoin do to stop the impending 51% attack?

Within the coming weeks both Namecoin and SolidCoin have been threatened with the same attack. What can be done by the users, pool operators and developers of these forks to either; A. Minimise ...
15
votes
2answers
2k views

What are Namecoins?

What are Namecoins exactly, how do they differ from Bitcoins, and how come one is able to merge mine them along with Bitcoins?
5
votes
1answer
7k views

How does one mine Namecoins?

In order to mine Bitcoins, one needs to start the bitcoind with "-server" flag and later request from it a getwork to solve. Does the Namecoin client operate in the same way, or is there some specific ...
11
votes
2answers
549 views

Will merged mining mine each chain as efficiently as non-merged mining?

Let's say I get a hash rate of X when mining either Bitcoin or Namecoin. When using Merged Mining, will I be able to still do X concurrently on both blockchains, or will I do significantly less than ...
8
votes
1answer
1k views

How does merged mining work on a technical level?

In bitcoin, miners hash the header twice with the SHA256 function. This header consists of the fields listed below, as described by this question. version previousHashBlock merkleRoot time ...
7
votes
1answer
345 views

Does merged mining require clients to download both blockchains?

Suppose I want to start an AltCoin, and set it up for merged mining with Bitcoin. Will it require the AltCoin end-users to also download the Bitcoin blockchain to verify the hashes embedded in the ...
3
votes
2answers
1k views

What security threats does blockchain technology solve or present?

I am interested in security, identity and authenticity in electronic networks. What sort of security concerns could blockchain technology help with and what sort does it pose? Are there entry and ...
2
votes
1answer
650 views

How are block rewards claimed in merged mining?

How do you claim a block reward on a merged chain? If I understood it right: let's say you are mining Bitcoin and Namecoin. When you find the solution to a BTC block, you include a transaction in the ...
1
vote
2answers
1k views

BTC/hashes/second rates for various pools

Do all pools have the same average BTC/hashes/second rates (for individual members of the pool)? For example, this profitability calculator says 4 Th/s hash rates will produce 0.04 BTC per day, yet I'...
5
votes
1answer
209 views

How does a miner insert the hash of a merged-mined alt chain's transaction into a Bitcoin transaction?

I've read the how does merged mining work? thread and I'm a bit confused as to how one of the transactions in the bitcoin block "stores" the hash of the Namecoin block. Where is this information ...
4
votes
1answer
379 views

Where can I find some guidelines on how to program a merged mining transaction?

In answer to question "How does merged mining work?", we can read that in order to merged mine, we need to create a Bitcoin transaction containing a Namecoin block hash and put it on the tip of the ...
1
vote
2answers
254 views

How to lower difficulty on blockchain?

I created a coin (hexco.in) The problem now is, sometimes some user create pools and use rented mining rigs to mine on my coin. But after a while they stop and my blockchain stucks at a certain block....
1
vote
0answers
177 views

Do Bitcoin miners verify validity of merge-mined Namecoin blocks?

I've been reading a little about merged mining as used in Bitcoin and Namecoin. It seems like merged mining effectively eliminated Namecoin-only mining pools, right? Since Namecoin-only pools are ...