systems, such as Bitcoin, that lack any single central authority to validate their operations and which have to use other means to determine the validity of operations.

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108 views

How long do files stay on the Decentralized Data Storage blockchain when using NXT's Data Cloud Feature?

NXT 1.7.4 just released a new Data Cloud feature: How long do files last on the NXT blockchain?
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2answers
34 views

Is simplified payment validation (SPV) decentralized?

Is simplified payment validation (SPV) decentralized? Viz., when an SPV client wants to verify a payment, does it connect to a central server or to several random peers, checking that their Merkle ...
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2answers
36 views

Is Bitcoin a decentralized time-stamping authority?

Can Bitcoin/blockchain be thought of as a decentralized time-stamping authority (TSA)? Is there true consensus in the Bitcoin network on a mined block's time, or just that the block was mined?
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1answer
54 views

Are there any complete Bitcoin systems?

It seems to me that to keep Bitcoin both decentralized and secure, the whole of the Bitcoin process should ultimately depend on each user, or rather, that the involvement of each user should ...
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2answers
144 views

Is Ripple centralized or decentralized?

Are people still fighting about this or have they come to a consensus? Also, as of today (Sep 2015), what is the main advantage of Ripple over Bitcoin?
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1answer
39 views

Decentralized Data Storage System in NXT - How do you disable the 2 week data pruning?

Currently the NXT platform has the ability to store data in its blockchain, whereby making it a decentralized data storage system. But the thing is that the data is purged from a nodes blockchain ...
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2answers
395 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 ...
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3answers
102 views

Is There a Safe Way to Decentralize or Spread Ownership of a Company Using Bitcoin or Altcoins?

We are starting a social enterprise that is focusing on home oriented products and services - starting with real estate brokerage services. The profits from this organization will be used to battle ...
2
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1answer
80 views

Are transactions in a block decided by mining pool operator?

My assumptions: Most pools have an operator. All individual miners part of the pool work on block with address of the coinbase transaction owned by pool operator. pool operator gets all the bitcoins ...
2
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1answer
242 views

What is Multi-PPS (Pay Per Share)?

I know the original proposal on bitcointalk is here, but can someone explain it more succinctly? How does Multi-PPS work? Can it actually prevent mining centralization?
3
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1answer
529 views

How to store 30kb file using Decentralized Blockchain Data Storage on NXT (nxtcoin) by attach messages?

I'm curious to how would one store a 30kb file on the NXT blockchain since the NXT protocol can attach a 1000byte message. My test scenario is storing a 30kb midi file on the nxt blockchain and then ...
2
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1answer
71 views

How does Darkcoin achieve anonymity without centralisation?

Darkcoin is supposedly completely anonymous. How does this work without any centralisation? Is there one person with all the transactions and only they mine?
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1answer
65 views

Decentralized product inventory (instead of simple orderbook)

I am thinking of creating a decentralized market place with public bidding. AS far as I have researched all cryptocurrencies and such only offer public ledgers with simple orderbooks. The only data ...
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2answers
35 views

What are the pros/cons of the Multigateway service on NXT?

I'm doing some research on the decentralized exchange multigateway on the NXT platform. I was wondering what are the pros/cons of this service compared to centralized exchanges like cryptsy?
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3answers
815 views

What are some of the advantages & disadvantages of the following: Colored Coins and Counterparty

Seeing the release of coinprism wallet for colored coins and I'm also playing with counterparty.co What are the main differences among these two competing decentralized asset managers? I see that ...
4
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2answers
209 views

Decentralized democratic voting [duplicate]

Has the fundamental problem in cryptovoting, one person, one vote, in a completely decentralized or blockchain centric manner been solved? In other words, how can votes be allocated in a ...
2
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1answer
254 views

Do we know who runs the big mining pools?

After looking at the hashrate repartition https://blockchain.info/fr/pools. It seems to me that bitcoin is quite centralized, and that two big actors (mining pools company who run the bitcoind server) ...
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2answers
309 views

Would a professional ASIC-machine holder eventually become a bank-like character?

As we know, one of the concepts of Bitcoin is to be "decentralized". When individual miners, even with ASIC miners, become unprofitable, will the system become more centralized to those several superb ...
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3answers
663 views

Is there any centralized cryptocurreny?

Is there any centralized cryptocurrency? Is cryptocurrency a Bitcoin oriented concept only? From what i read almost all of the cryptocurrencies are derivatives of Bitcoin.
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1answer
449 views

Is there a list of all cryptocoin currencies? [duplicate]

Apart from bitcoin, I know few other crypto currencies (by this I mean currency which works in a similar way to bitcon). They are: namecoin lightcoin ripple I also heard about SolidCoin, but as ...
3
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1answer
125 views

Why is decentralized e-commerce good or better?

All of the promotional materials (videos, papers, articles, etc.) on Bitcoin bill it as a decentralized solution for e-commerce/online financial exchanges that bypasses traditional banks, federal ...
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1answer
670 views

What is the Ripple equivalent of the “51% attack?”

In Bitcoin, if a participant gains control of more than 50% of the hash power, they can execute a double-spending attack. The "attack" could come from within, say if the existing powerful miners ...
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3answers
5k views

How is a hard fork resolved?

In March 2013 there was a fork following the v0.8 release. The issue was resolved rather efficiently, as explained in the post-mortem report. However in this process there were winners and losers: the ...
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1answer
272 views

Where does bitcoin-qt try to connect to when running for the first time? [duplicate]

My question is, where does bitcoin-qt try to connect to when running for the first time? How does it know where to connect? Is blockchain.info some domain that has discovery services? If yes, then ...
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4answers
713 views

Is mining the unfair part of bitcoin in the same way banks (or rather, fractionary reserve systems) are to current monetary system?

I've been reading a lot about bitcoin lately and I'm very interested. Especially, when it comes to making a currency that is way more fair, because it avoids a centralized control of it. However, in ...
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0answers
60 views

What are some resources that analyze “how centralized Bitcoin really is”

Are there any blogs that track the centralization in Bitcoin? Is it growing, or is Bitcoin becoming less centralized over time? E.g. I believe mining pools have become somewhat less centralized in ...
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1answer
82 views

Is there a way to create decentralised rating system akin to #bitcoin-otc?

I'm wondering if there is a way to create a ranking system similar to #bitcoin-otc, but making it decentralised?
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3answers
946 views

Decentralized escrow functionality built into Bitcoin?

AFAIK there are a few websites out there that offer escrow services for Bitcoin. Those however are central, i.e. I have to "trust" them. Is it being discussed, is it theoretically possible, or does ...
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2answers
981 views

Do mining pools centralize the Bitcoin network and make it less secure?

A mining pool with a significant percentage of the hash rate could allow double spend attacks by the pool manager. There are a number of pools that approach this level. However, most people say that a ...
9
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2answers
379 views

Decentralized transactions between two decentralized currencies

Currently, bitcoins and namecoins are implemented using the Bitcoin protocol. And there might be several reason for new block chains to appear, but this is not the subject here. As far as I know, ...