Questions tagged [blockchain]
23 questions
78
votes
5 answers
What important/crucial real-world applications use blockchain?
As part of some blockchain-related research I am currently undertaking, the notion of using blockchains for a variety of real-world applications are thrown about loosely.
Therefore, I propose the following questions:
What important/crucial…
rshah
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vote
1 answer
How can information be updated in blockchain?
I am learning about blockchain and I've read that blockchains are immutable. Suppose my health information is stored on a block and I have gotten diagnosed with a disease and now my information needs to be updated. I have read online (here) that to…
Kunal
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vote
0 answers
CLRS like book for blockchain?
I am writing a blockchain as a side project in Go and I am struggling to find good a theoretical treatise on the subject.
The information online is either too basic or too specific.
Thanks
Lumbda Kokolala
- 11
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0
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0 answers
How many number of nodes we can create under hyperledger fabric?
We are using hyperledger fabric. We have a doubt like, is there any limit, of creating number of nodes while configuring hyperledger fabric?
sai
- 101
0
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0 answers
Is there any current public blockchain technology that allows users to post a publicly viewable document directly on a blockchain?
I have read that Ethereum can theoretically support large documents (1 MB), but that such transactions would be very expensive and they risk not being validated.
Most blockchain document services I have found assign a hash to a document then put the…
0
votes
1 answer
Why is "Proof of Space" insufficient to secure a blockchain?
I just came across a blockchain concept called "Proof of Space-Time" in which participants compete to verify blocks by generating and storing essentially random data to answer essentially random cryptographic challenges. The more data they can…
feetwet
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1 answer
BlockChain: Always get a new Hash
I am asking a simple question. Why we say that we would always get a new hash in a blockchain? Why we can't have collisions?
One way of collision is that the hard disk becomes full and there is no more space to store a transaction.
Some body please…
user2994783
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1 answer
Incentive for block creation in a private blockchain
Bitcoin miners are incentivized to produce valid blocks via a trasactional reward. But let's say I wanted to implement blockchain as part of my private data system. Who would my miner's be? I think could just have one automated miner (on a dedicated…
Zduff
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