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9 votes

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

99% of altcoins claim an "innovation" that is broken or unproven. I would say that the first thing to do is look at unique codebases that aren't based on Bitcoin, which basically means (besides ...
Нонн Болдырев's user avatar
8 votes
Accepted

Why can't timestamps be a substitute for blockchain?

But then the next problem is transaction order and validity to prevent double spending. I don't understand completely why a timestamp can't just be included for every broadcasted transaction, and the ...
Meni Rosenfeld's user avatar
7 votes

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

A very large majority of these altcoins are essentially scams. There is a cottage industry that takes a coin, changes something minor (name, logo), and releases it with great fanfare, enticing people ...
user36303's user avatar
  • 786
5 votes

How scalable is a Blockchain-based system?

Blockchains are not really scalable. For the most security, blockchains need to be replicated on as many devices as possible. Those devices are full nodes and must download and verify every single ...
Ava Chow's user avatar
  • 71k
5 votes

Why can't timestamps be a substitute for blockchain?

But then the next problem is transaction order and validity to prevent double spending. I don't understand completely why a timestamp can't just be included for every broadcasted transaction, and the ...
Ava Chow's user avatar
  • 71k
5 votes
Accepted

NXT, Ignis, and Ardor Confusion. Purpose of NXT when there is Ignis / Ardor?

If NXT is switching to Ardor, what is the purpose of holding NXT? Nxt isn't switching to Ardor. It will still exist after Ardor launches. The purpose of holding NXT with this in mind is if you need ...
T.K's user avatar
  • 281
4 votes

Is there an opensource crypto-currency exchanges engine?

Bitsquare.io is currently the state of the art and it is open source: https://github.com/bitsquare/bitsquare/
stke's user avatar
  • 381
4 votes
Accepted

How are gridcoin transactions validated?

Gridcoin is a proof-of-stake coin. Transactions are bundled and signed like any other blockchain, but with proof-of-stake the chance to sign is determined by coin balance and the time since your last ...
Nate Simpson's user avatar
4 votes
Accepted

Does it make sense to design a mutable blockchain?

I agree more context is needed to provide a more directly meaningful answer. But in general: a blockchain allows users to interact without trusting a central authority, instead they verify the ...
chytrik's user avatar
  • 18.3k
3 votes

electrum, jaxx, and exodus

Here is how to create a paper wallet for almost any Cryptocurrency : https://steemit.com/cryptocurrency/@bad.r2017/how-to-create-a-paper-wallet-for-any-cryptocurrency-in-7-steps
CryptoBird's user avatar
3 votes

Which cryptocurrency has the smallest block time?

EOS has blocks that are published every ~500ms, so around two blocks per second. That's a contender for the top spot for sure
rezadru's user avatar
  • 31
3 votes

Is PBFT a consensus algorithm?

PBFT is Practical Byzantine Fault Tolerance. It is a "classical" consensus algorithm that uses a state machine. Uses leader and block election to select a leader. PBFT is a three-phase, network-...
Dan Anderson's user avatar
3 votes

Can the coin symbol prefix in a cloned NXT blockchain start with a digit?

No, adding a coin symbol prefix is not doable as it will impact other functions that might take it as a parameter. Your better off just doing it on the front end using a css :before class using the ...
Patoshi パトシ's user avatar
3 votes

Can an account prefix in a NXT clone blockchain be longer than three characters?

No, currently the account prefix (ACCOUNT_PREFIX constant) must be exactly 3 characters. This could be fixed in future.
Petko Petkov's user avatar
3 votes
Accepted

A Blockchain that merges mining forks and could be more power-efficient?

Something that is very similar to what you describe is the concept of "Uncle Blocks" used in Ethereum. Even there, though, there are no partial blocks and nobody would continue to mine on a "half-...
Murch's user avatar
  • 76k
3 votes
Accepted

Can a blockchain have duplicate block hashes?

Assuming SHA256 isn't broken, this isn't possible in Bitcoin, as the only way to find data that hashes to the same thing is when the data is the same. Since every Bitcoin block contains a hash of its ...
Pieter Wuille's user avatar
2 votes

How are some coins premined?

There are various ways to premine coins, some are use for scam coins and others are used by experimental altcoins. The premining made by scam coins are usually made with 3 methods: 1-At the first ...
kolima's user avatar
  • 21
2 votes

How to experience the thrill of mining?

Run Bitcoin Core with the -regtest flag set: For situations where interaction with random peers and blocks is unnecessary or unwanted, Bitcoin Core’s regression test mode (regtest mode) lets you ...
Rich Apodaca's user avatar
  • 2,421
2 votes

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

Storj is a blockchain based solution for encrypting and storing data. More information can be found about the project at storj.io
Mark S.'s user avatar
  • 2,730
2 votes
Accepted

Will the increasing difficulty in Bitcoin mining push miners to a different currency?

It appears that miners consider Bitcoin to provide the largest ROI. There are dozens of other coins that use SHA-256D as their hashing algorithm, if it were more profitable to mine any of those, ...
Murch's user avatar
  • 76k
2 votes
Accepted

Non bitcoin like blockchains

That's just bullshit bingo material. They try to get attention by throwing a few buzzwords around. It happens all the time with other terms. Not long until some politician tells a sentence like this: ...
UTF-8's user avatar
  • 3,224
2 votes

Is it possible to use the same BIP39 list of seed words to create addresses for different crypto assets?

BIP 43/44 gives each coin a unique derivation root. Many wallets use this, including some multi-currency wallets. Be careful when using multiple wallets with the same mnemonic though; the least ...
Sjors Provoost's user avatar
2 votes

electrum, jaxx, and exodus

I am in the same questions for myself during last few days, up to date have found quite a lot info online : Recently there have been some troubles with security of Jaxx, more or less real, more or ...
Viewfinder's user avatar
2 votes

Delegated Proof of Stake (DPOS) vs. Proof of stake?

Important distinction of DPoS from PoS is that in DPoS, there is no minimum stakeholder token requirement to participate and instead of stakeholder tokens proportionately representing their ability to ...
VforVendetta's user avatar
2 votes

Can the coin symbol prefix in a cloned NXT blockchain start with a digit?

It should be OK for the prefix to start with digit. Or at least this works for me in Constants.java: public static final String COIN_SYMBOL = "5Coin"; public static final String ACCOUNT_PREFIX = "5CN"...
Petko Petkov's user avatar
2 votes
Accepted

IoT to Hyperledger Fabric, and Tracing / Certifying data

I can certify that the ledger has not been altered by the administrator of my company, but how can I certify that my admin has not altered code listed on those 3 points ? If I can't guaranty that code ...
chytrik's user avatar
  • 18.3k
1 vote

Why does the blockchain keep transaction history rather than balance?

Keeping the entire transaction history allows us to independently verify that everyone's balances (note that Bitcoin does not actually use accounts or balances) are correct. Without having the full ...
Ava Chow's user avatar
  • 71k
1 vote

I am looking for a list of all the public repositories for as many different cryptocurrencies as possible

https://www.coingecko.com compiles the developer activities of almost all or most public traded cryptocurrencies. They have the repo data stored on their site. Site may be hard to navigate, click ...
pazee's user avatar
  • 64
1 vote

How difficult is it to invent a new cryptocurrency? (In regards to time, money, technical knowledge, etc.)

You can find two types of crypto currencies - Ethereum token based and altcoin (new blockchain). Tokens are relatively easier to develop than an altcoin. The work involved in creating an ecosystem ...
Aoommen's user avatar
  • 36
1 vote

How difficult is it to invent a new cryptocurrency? (In regards to time, money, technical knowledge, etc.)

quick approach:- Not that difficult , Just fork a github repo of a smart contract supporting ERC20 token starndard and deploy the contract on main net. developer approach:- If you want to make ...
Shersha Fn's user avatar

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