Bitcoin Forum

There are lots of discussion about of the relationship between blockchain and bitcoin.
Most of bitcoiner believe we can't split blockchain and bitcoin, without bitcoin, blockchain will no safe and it will useless. It's the bitcoin secure the blockchain.
if this point is right. then i got a question, compare pow blockchain, i think pos blockchain may be more secure than pow blockchain. such as NXT blockchain VS bitcoin blockchain.
And why we can sure bitcoin's blockchain is the most value-full?
I mean we need find a security blockchain, bitcoin's blockchain may not be the best choice.

This is one of the typical, I agree, and I do not agree discussions. The security of the Blockchain as it is now, is currently only getting stronger. At this point no change is needed here.

But that's not the case when all coins are mined. POW then is basically worthless as miners would burn so much money just to keep the Blockchain/Bitcoin secure.

They are mining for obvious reasons, and certainly not to function as a charity farm or pool. Income of only transaction fees is simply not enough.

But then again, would POS in that case be a better option? Not sure. Will you reward people then for holding their coins in the wallet? Will you make exchanges extremely rich if so?

21M coin cap is and will stay at 21M I hope. Very difficult decesions need to be made at that time. Glad it is still far away.

There is a fundamental difference between PoS and PoW: on a PoW network, the consensus majority can be reached only by spending energy.
Regardless of the fact that its a single miner spending energy or colluding miners spending less individually but spending as much collectively to reach the 51% hashing power.

In contrast, on a PoS network, majority power can be reached simply by collusion between stake holders.
There is no cost involved in the collusion.
As a PoS coinholder, you make the assumption that others will not collude against you in a costless attack.
You do not need to make this assumption with PoW.
The second law of thermodynamics confirms that one cannot create security (reduce the entropy) in a system without spending energy.
A PoS network  is like a perpetual motion machine..

I think as Bitcoins are not just seen as a currency but more of it as an opportunity and technology, the same applies to blockchain as without this ledger, maintaining Bitcoin balances will be next to impossible...

Blockchain has more chances of getting adapted due to the technology behind it, and we are actually hearing more news of blockchain getting into effect in different things more and more than Bitcoin itself...

I say Bitcoin is revolutionary currency but Blockchain is everything.Bitcoin's importance always will be and this will be base currency to set the price of other digital currencies in future but the real thing is blockchain technology. Blockchain technology will rule the all financial system and its use will increase in next few years.

No doubt bitcoin will dominate everything.Bitcoin is core currency which is becoming very popular and is being adopted by various institution everyday.Bitcoin is real innovation and will always remain.

neither is pos blockchain for that matter, better options will maybe come in the future, for now pow is the best you can get, and surely you can't disrupt the whole mining scene for a small disagreement

The different between pos coin and pow coin is that pow is more fair than pos.
And pos coin can't make fair to distribution.
As a currency, bitcoin may be the only choice.
When we want to use the blockchain technology, do we really care about the fair issue?
May be the only issue we concern about is the security.
In this point, bitcoin blockchain is not the only one we can choose.

Here is a good link to sort out any confusions on the two:

http://BitcoinAnswered.com/4/myth--blockchain-technology-is-important-and-bitcoins-are-not

That is because they do not understand that the Block-chain is a platform, not a software like Bitcoin Core.
It is the block-chain technology that is powering the Bitcoin Core software.

A blockchain is a transaction database shared by all nodes participating in a system based on the Bitcoin protocol. A full copy of a currency's block chain contains every transaction ever executed in the currency. With this information, one can find out how much value belonged to each address at any point in history

Bitcoin was the beginning of an experiment that has caught fire and spread wildly. There are now hundreds of stable blockchains.

Once 51% defense systems (like the one we invented) become commonplace, and cheap hashrate becomes plentiful, the price and energy required to keep a blockchain secure will become negligible.

All blockchains are extremely weak compared to Bitcoin's. Bitcoin's blockchain has an army of the equivalent of 77000 units of the faster supercomputer in the world, in other words is secured by the strongest network on the planet. That's why NASDAQ and the rest of big infrastructures will work with the Bitcoin blockchain and will not waste resources trying to make their own blockchain, or use an altcoin which means several orders of magnitude less secure.

Until the two biggest pools team up and decide to attack the block chain. The network would be much safer if there were no giant pools that could potentially be abused.

Like 2 or more of the 4 leading pools, all of which are Chinese? https://blockchain.info/pools (https://blockchain.info/pools)
And wasn't the farms of both BW and Antpool at the same location? https://bitcointalk.org/index.php?topic=969823.0 (https://bitcointalk.org/index.php?topic=969823.0)

And isn't it true that they will benefit more by using their hashrate to get most of the blocks, rather than attacking the blockchain?

If they attack it they could gain a shit ton of coins without having to spend years to get it.

If they attack it, everyone else will detect it and possible modifications to the protocol will be made.
Also, don't all nodes need to agree on a found block?