Cryptocurrency expert here!

Will Bitcoin Transaction Evicted From Mempool Disappear From Blockchain Explorer? From the question below I can see the circumstances under which a transaction will be removed from the Bitcoin mempool :- How do transactions leave the memory pool? Whilst a transaction is still unconfirmed, it shows up in the Blockchain.info Explorer as an 'Unconfirmed Transaction!', within a red colored button. This button then turns to blue with "1 Confirmations" when the transaction is confirmed. However if the transaction remains unconfirmed for a long time and the button remains at red, and if the transaction is then eventually "evicted" from the mempool, will the Blockchain Explorer then just report "Transaction Not Found" when I search for the transaction's id ? I would find this behaviour useful as it would allow me to tell when a transaction has effectively been cancelled. If the red button is still showing, I know my transaction may still have a cha...

Canceled transaction (Mycelium wallet) thx for your answers in advance... I sent BTC yesterday. Today I have discovered that transaction is "unable to broadcast", Mycelium wallet offered me "Cancel transaction". I have done it...tansaction dissappeared from the list of transactions but no BTC showed in my wallet. What I should do now or how long I should wait? http://ift.tt/2CsCqaB

Is it possible to get stuck with a block that nobody can mine? The hash of a bitcoin block is generated from: Block version number (partially fixed*, 4 bits) Previous block hash (fixed, 256 bits) Merkle root (not fixed, 256 bits), Time (not fixed, 4 bits), Bits (partially fixed*, 4 bits), Nonce (not fixed, 4 bits). So, the block hash is generated from 528 bits. You can change 264 bits freely to try to have a hash that matches the current diff, and 264 bits are immutable. Is there a property on the SHA-256 function that asserts that on these 264 bits of freedom, one combination will give us a hash that is matches the diff requirements? If not, does that mean that the blockchain could get stuck on a block because nobody can mine on it? * "Partially fixed" values could be overriden by software updates for example. I assume that partially fixed values are fixed to simplify. http://ift.tt/2lHqcjH

How Lightning channels will helps with scaling in practice I watched the 2015 presentation of LN, and I've read a portion of the paper - so I understand basically how the channels work (I think). However, I'm not sure I've fully grasped how this will help scalability in practice. If Bob and Alice want to transact (let's say Alice is a random internet retailer - not Amazon - and Bob wants to buy waaaaaay too many tattoo stickers for his daughters for Christmas, not realizing that each little package has like 40 sheets of the things). Bob would then have to open a channel with Alice, transfer the balance required to complete the purchase, and then the channel would be closed. For pretty much all economic relationships except for a few enormous ones (Amazon, eBay, Walmart, etc), you won't (and wouldn't be able to) keep open channels all the time. From these two observations, I wonder: wouldn't the process of opening / closing a channel actually create two tr...

Digibyte Wallet Hash I recently invested in digibyte. As someone of IT-security field, I'd love to know how the passphrase is stored in digibytes wallet.dat. The Bitcoin2John doesn't work on it and hashcat, too, has no support for the wallet. I couldn't find any information on how storage is done, so I'm asking you. Best wishes and thanks in advance http://ift.tt/2lHqd7f

If the bitcoin address changes every time, why there is more than one transaction for an address in the ledger? I was checking a random address in blockchain.com, there are alot of transactions that is done over this address. While in the website it is mentioned that the address is changing everytime! So it means that every address should hold at most one transaction! http://ift.tt/2lFfYjY

One private key for two wallet problem - How can I get bitcoin hard fork? I have a wallet named w1 which has the united bitcoin already (I checked on the block explorer) When I extract w1's private key and put into the united bitcoin desktop wallet, it points to a different wallet w2. This w2 does not have any hard forked coin. My question is: How can I let the desktop wallet know I want it point the address to w1, not w2 ? http://ift.tt/2CEM1IJ