Why are some transactions found on some chain explorers but not on others?

This is something that has puzzled me for a while and I cannot think of a rational reason for it. The transaction 3361d2484f0566ab13d32f2ab321319945f48eaea1ac2cc9f5a79b40528359c3 shows properly on blockchain.info and tradeblock.

However, I cannot find it either on blockr.io nor blocktrail.com.— I am also running a server to watch transactions and I cannot find this transaction either. Sometimes I can find transactions that do not appear on blockchain so it’s quite random.

All servers have many connections so I wonder what could be the issue? Slow network?

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What does the term “Electronic Cash” stand for in computer science lingo?

Very often in various online discussions, people cite the word “cash” from the Bitcoin whitepaper title as evidence that Bitcoin should be used for everyday transactions.

I’ve seen mentions that the term “Electronic Cash” as it appears in the whitepaper title has a very specific meaning in the cypherpunk/computer science community. I’ve tried looking for a definition online, but I couldn’t readily find a more elaborate definition of the term.

What is the meaning of “Electronic Cash” in the computer science lingo?

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Is it still possible to do cpu mining for experimenting?

Commercially speaking I know it worse than pointless! But please, be gentle and don’t remind me. Neither bother about being insulting or patronizing because I ask such a ‘stupid’ question. Thank you for your comprehension.

The reason I’m wanting the – already four times over obsoleted – cpu mining is because I don’t want to earn money with it. It’s all about being curious about how Bitcoin works. Not an altcoin or something else. It’s about learning about BC.

CPU mining is the only option left. Asic usb miners are sold out everywhere. Raspberry Pi don’t support GPU mining, do they ? And I really don’t want to buy a dedicate device – because I want to know how it technically works. Do CLI stuff to make it work.

If this wasn’t serious to me, I really wouldn’t bother asking around how to do it.

So, now that’s out of the way…

  • Is it today still technically feasibly to do solo cpu mining ? (on Rpi3)

  • If not, how come ?

  • If it is feasible, is there an online guide, tutorial, … I could use ?

  • Optional: Why are people so reluctant about this ? It’s not that I’m going to crash the BC system, am I ? 🙂

It’s perfectly fine to me to download the bulk data with a faster computer and upload it to the rpi.

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How would Bitcoin look like if the primary design goal was to have LN-like payments?

Today (assuming SW), we have Bitcoin, which allows us to build LN using a set of smart constructs such as HTLCs. But this is a result of a work of people trying to figure out how to take what Bitcoin offers and build something on top of it, what was not necessarily in the mind of the original designer. This is where we face certain technical issues that we can overcome, and it will work, but it is probably not the optimal design IF we wanted to have LN in the first place.

So, what would such a design be? Would you add new types of transactions, would you have different script opcodes, would you start of Mimblewimble?

Say you want to design an altcoin with one main goal – to have as good LN-like system as possible. Let’s define LN-like system as a system of off-chain transactions with on-chain guarantees, but don’t limit it very much further.

Would it be possible then to have something better than Bitcoin’s LN? For example, would it be possible to avoid that channel capacity limitations (i.e. there is a total capacity of a channel and if you don’t balance it, you will need to open a new one) etc.?

What are these factors in Bitcoin design that limit LN to be even better?

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