Non-Bitcoin solutions such as alternate block chains or methods of storing and exchanging value

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1answer
45 views

can I use elements of the blockchain to protect the integrity of a leaderboard without central servers?

For a World of Warcraft community feature conception contest I've come up with something that involves a leaderboard. However, World of Warcraft addons are purely individual, so a centralize platform ...
0
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0answers
73 views

What's difference between Multichain, Chain, Hyperledger, Ethereum etc

I stumbled upon multiple Blockchain protocols framework. For example Multichain http://www.multichain.com/ What's difference between this one and the others ?
9
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2answers
336 views

What are the differences (and value adds) among all the different Crypto Currencies?

This website lists hundreds of crypto currencies. Some whimsical, others with a unique value. Is there a catalog, or diff between all the implementations that highlights innovation, or a unique use ...
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2answers
47 views

Is there any bitcoin fork which goal is storing arbitrary information?

I know that there is Namecoin, which saves key:value pair. Is thete other similar solutions? Maybe for arbitrary textblocks? Update: how they do it? Delaware Blockchain Initiative to Streamline ...
0
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0answers
31 views

Received Error “You cannot sign a non-build transaction error” when trying to send BTC in Blockchain Wallet

has anymore received the error : "You cannot sign a non-build transaction error" when trying to send BTC. I have 7 pending transactions running for 24 hours now, and when I tried to make an 8th ...
2
votes
1answer
80 views

How to make cryptocurrency easier for law enforcement?

I'm researching the topic of crypto currency and it's impact on society. It's often said that cryptocurrency is equivalent to cash, but that is clearly not true, since cash is very difficult to ...
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0answers
32 views

Projects built on the Tendermint platform?

The Tendermint project sounds like a very promising proof-of-stake implementation. What public projects are being built on this platform?
10
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2answers
560 views

Digital currencies pegged to dollar value

Some digital currencies, like NuBits, declare that they peg their value to dollar or other fiat currency. How does this work? Under what conditions this can work? Can this be distributed, or does ...
0
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1answer
126 views

Can bitcoin and altcoin co-exist in sidechain? If Yes, strategy

I have private block chain - tweaked bitcoin blockchain with a private coin by creating a Genesis block. Lets call it "PrivateCoin" I also have a sidechain elements/alpha instance, I effectively ...
3
votes
1answer
90 views

Why is a short blocktime considered to be unsafe?

I've heard a couple of times "a shorter blocktime is unsafe," (first about Litecoin and now Ethereum) but never understood why. Is it the higher probability of a fork? Why do some people consider a ...
1
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2answers
233 views

What is the most lightweight proof-of-work algorithm?

I know litecoin was created back in the day using Scrypt as to make it more lightweight but also harder to build ASIC hardware from - so everyday computers could mine. Are there other algorithms one ...
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4answers
134 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 ...
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2answers
84 views

Does anyone have a formula for dynamic block durations?

I want to implement this, so does anyone have a formula for dynamic block durations instead of a fixed target of 10 minutes?
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2answers
389 views

Create alternative blockchain with proof-of-work

For learning purposes, I want to create an alternative special-purpose blockchain. It would use a proof-of-work function that is different than the one in Bitcoin. Short of forking bitcoin and going ...
3
votes
1answer
290 views

Which cryptocurrency has the smallest block time?

What is the lowest block time of any cryptocurrency? I don't mean the time of an individual block, but the target time per block. What is the shortest reasonable block interval?
1
vote
2answers
108 views

Are there any stochastically dependent proof of work algorithms?

In bitcoin, the probability of discovering a block on the X-th hash is the same1 as it is on the Y-th hash. As such, the probability of discovery is stochastically independent. Are there proof of ...
0
votes
1answer
66 views

Is it possible for corporate interests to incentivize securing alternate Blockchains instead of Bitcoin's Blockchain?

Is it possible for corporate interests to incentivize securing POW of alternate blockchains instead of Bitcoin's blockchain? Given the large amount of funding and/or "partnerships" announced the last ...
0
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1answer
156 views

Calculating the mining profitability of Novacoin

I've been researching altcoins and keep coming across some staggering figures. I think it's just too early to do math, but if I were to farm novacoins for example calculator here and I have pretty ...
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votes
2answers
116 views

WeaveCoin - Extremely High-Speed AltCoin - Is this Possible? [closed]

I've written a proposal for an extremely extremely high-speed transaction verification algorithm: http://kenthagerman.blogspot.ca/2014/08/weavecoin-high-speed-crypto-currency.html Is this possible? ...
0
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1answer
48 views

Where can new cryptocurrency features be found?

I was wondering what new cryptocurrency features may be introduced. How can I find published new cryptocurrency features?
0
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1answer
232 views

How can I find out which wallet belongs to which cryptocoin? [duplicate]

I have multiple decrypted wallets in the same folder. How can I find out which wallet belongs to which cryptocoin? All wallets are named wallet_x.dat, so the name gives no hint. UPDATE: I have no ...
4
votes
2answers
238 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
votes
1answer
70 views

Cryptographic “Central Bank” [duplicate]

Is it possible to create a bitcoin-like system that has a central authority? I know that the reason that many people like bitcoin is that it is completely unregulated, but I was thinking that a "...
4
votes
2answers
118 views

Which cryptocurrencies deviate significantly from Bitcoin?

There's been dozens of alternate cryptocurrencies but I don't believe many of them did much other than find/replace some strings. We see Bitcoin as made up of the blockchain and proof-of-work via ...
3
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1answer
484 views

Ripple Distributed Consensus Algorithm

What kind of a Consensus Algorithms does ripple use? Is that a leader or leaderless distributed consensus algorithm? Then what?
2
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1answer
146 views

Mini-Blockchain proposal: How is the proof-chain secured against injections?

I have just finished reading the paper Purely P2P Crypto-Currency With Finite Mini-Blockchain by J.D. Bruce. While I got the impression, that the rolling blockchain as an idea might work, I was left ...
0
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1answer
209 views

Creating An Altcoin: How to Lower or Increase Confirmation Times?

When Creating an Altcoin for fun, what variable/attribute do I change in main.cpp file to increase/lower the time it takes for confirmations to take place? Also can the confirmation times be changed ...
3
votes
1answer
156 views

Why do some mining algorithms run “cooler” than others?

So, there are some altcoin mining algorithms now that run cool, such as X11 and groestl. By cool, I mean even when mining at full GPU capacity, the card still remains at 60C or cooler with little to ...
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1answer
128 views

Bitcoin related research areas [closed]

I have a one year research project in my MSc curriculum. So i was suppose to address a existing issue in bitcoin protocol. Highly appreciate if someone can advise me and give me some ideas. Thank you....
5
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1answer
849 views

Fastest cryptocurrency

What cryptocurrency is the fastest in terms of reaching 100% transaction confirmation? I've found sites like this that show that Fastcoin is the fastest at 48 seconds. I think David Schwartz said ...
1
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3answers
186 views

How many bitcoin clones are out there? [duplicate]

How many bitcoin clones are out there? I mean people changing the name, the hashing algorithm and a few more parameters and creating a new coin that just keeps on copying bitcoin's source code in ...
2
votes
1answer
52 views

Is it possible to create a system for 'shared wallets' on top of bitcoin?

Is it possible to build a system on top of bitcoin, where: Random people will deposit money in a wallet X. Nobody has access to that wallet. After a few months, those users will vote in other ...
1
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3answers
157 views

Is it theoretically possible to limit the hash rate?

I am thinking of developing an altcoin that is truly asic/pool proof. I haven't tried yet (or even downloaded the source code), but I was wondering if it is possible for the network to behave in such ...
1
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1answer
400 views

How to calculate velocity of Bitcoin?

So determining the value of bitcoin is not the question at stake here. Suppose there's a new bitcoin with a production algorithm that's tied to the feedback rule proposed by McCallum and adjusts ...
7
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1answer
946 views

What is Proof of Burn?

Can someone explain me: What is Proof of Burn What is the difference between Proof of Burn and Proof of Work How Proof of burn works Which virtual currency uses Proof of burn technology instead of ...
2
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1answer
205 views

If more than one coin did the “mini-blockchain” proposal, would that make the weaker coin vulnerable?

So, I was reading this paper as a proposal to the ever growing blockchain problem. In summary, it's security is provided without a full blockchain by having a proof chain with these fields: Previous ...
4
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0answers
74 views

What happens in an extreme case if Ripple fails to make a consensus? Will that part of the network be segmented off?

What if the Ripple trust network becomes many trust hubs and spokes, and the hubs don't trust each other? In this extreme case, that could exist due to extreme network segregation, massive trust-...
6
votes
1answer
134 views

Have network DDoS attacks ever been successful on any coin?

Has a cryptocurrency network ever been fully DDoSed so that the blockchain did not advance during the attack? If so, which one and how?
1
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1answer
396 views

How does estimated coins calculated on Coinotron?

On 'Cointron' their is wallet table after logged in into the site, how they calculate estimated coins per day, estimated rewards, confirmed rewards and unconfirmed rewards? How does Coinotron derive ...
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0answers
170 views

CreateNewBlock : ConnectBlock Fail

Error Message at server 2 / 3 (peers trying to connect to main server) root@ubuntu:~/dogequark/src# cat ~/.dogequark/dogequark.cterminate called after throwing an instance of 'std::runtime_error' ...
4
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3answers
765 views

Are there any cryptocurrencies with no mining beyond participation?

I mean something where just participation in the decentralized network gives you coins somehow and you cannot do anything beyond (excluding more participation, of course, by having multiple PCs and ...
1
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1answer
56 views

In a perfect world, should RIPE160 be used as the block ID or transaction ID?

Edit: In this question I'm looking at storage advantages, and network bandwidth savings. Given that the TxID and BlockID uses SHA256 to uniquely identify a transaction (and block) is there any ...
2
votes
1answer
185 views

Ripple node compensation

How does Ripple charge fees for XRP-only transactions to compensate nodes? I've heard of what I can only describe as a "network fee", that some XRP are burned per transaction. What is the motivation ...
4
votes
1answer
125 views

Is there a website that compares the features of different cryptocoins?

Is there any website where I can find a comparison of different altcoins by features? I'm not interested in hashrate, price, difficulty, but rather in implemented features such as: Used difficulty ...
2
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1answer
213 views

Ripple network overhead

I like the way Ripple provides effectively instantaneous transaction verification. When building consensus how much traffic and their equivalent of orphan blocks are accumulated? Is communication ...
2
votes
1answer
350 views

Is Ripple's UNL list maintained by the network?

Who maintains the Ripple UNL list? This says We periodically poll our sources. If they mention a new node with a score over an amount, we add the node to our trusted core set. Who is "we"? Are ...
5
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5answers
3k views

Are there any resources for creating your own coin?

I have some experiments I want to do for creating my own coin. I've seen stuff like coingen.io but I want to do it myself. I also will be messing with other things like the hashing algorithm. Are ...
3
votes
1answer
60 views

Are there any _severe_ drawbacks of bitcoin justifying all the alternatives?

There exist quite some alternatives to bitcoin that are partially based on it, and I'm sure their creators all are convinced they improve upon something. But are there any serious drawbacks in bitcoin ...
2
votes
3answers
1k views

What are the most popular crypto currencies after Bitcoin?

I am trying to determine which crypto currencies are the most popular with the assumption that Bitcoin is the most popular one. This question is up to different interpretations because "most popular" ...
5
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2answers
397 views

How does Nextcoin convert 256-bit Curve25519 public keys into ~20 arabic numerals?

Nextcoin seems to convert 256-bit Curve25519 256-bit public keys into "account numbers" that have only arabic numbers and seem to only have a length of 20. How is that done? Examples In the ...