Community Digest

Top new questions this week:

How/When is mining reward given in the presence of forking / orphan chain?

I am aware this is related to this question. However, I am specifically curious about what would happen to the mining rewards, not the transactions, under a forking condition. As shown in the picture....

blockchain mining-reward reward-schedule  
asked by Prison Mike 1 vote
answered by Pieter Wuille 6 votes

Is signrawtransactionwithkey secure?

is the node API signrawtransactionwithkey (as documented here https://developer.bitcoin.org/reference/rpc/index.html) secure or recommended? This API takes a private key, so i want to understand how ...

signrawtransaction  
asked by Damo 1 vote

Why is lnd's channel.db so huge and when will it stop growing

I am running my lnd node since about 60 days. Looking at the file channel.db, I found it grows currently about 500M per day: btc@xxx:~/.lnd$ ls -al ./data/graph/mainnet/channel.db -rw------- 1 btc btc ...

lightning-network lightning-network-daemon channels ln-gossip  
asked by Rainer Feike 1 vote

Why does Bitcoin Core store the block height and the time of each transaction in the memory pool?

...given that one can be derived from the other? Surely the unsigned integer of height would be sufficient without the addition uint64_t of the time (to the second), wouldn't it?

unconfirmed-transactions mempool memory  
asked by Rebroad 1 vote

Greatest hits from previous weeks:

Do these new ASIC miners really pay for themselves in 5 days?

The Bitforce 50GH/s miner costs $2,500 today, and according to the following calculation it would mine enough coins in about 5 days to pay for itself. I am sure I am missing something here. Why would ...

mining-profitability mining-hardware difficulty asic  
asked by Simon 32 votes
answered by user3418 25 votes

Is it safe to store all my coins on Coinbase?

Is it safe to store my coins (BTC & ETH) on the Coinbase platform or is it safer to download a wallet to keep them in?

wallet security exchanges  
asked by Coffey 8 votes
answered by marshal craft 6 votes

Why was 21 million picked as the number of bitcoins to be created?

Why did Satoshi pick 21 million as the number of bitcoins to be created? What is the significance of that number?

economic-theory finance  
asked by osmosis 95 votes
answered by Chris Moore 71 votes

opening an old wallet.dat

I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet.dat to my dropbox. According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt ...

bitcoin-core wallet.dat wallet-recovery  
asked by valan 11 votes
answered by Phillip Remaker 15 votes

Why doesn't Bitcoin migrate to proof-of-stake?

After reading a little bit about different consensus algorithms, I am just trying to understand why Bitcoin still uses proof-of-work. This consensus algorithm being exponentially expensive, and ...

proof-of-work proof-of-stake energy-consumption  
asked by Oscar Serna 38 votes
answered by Murch 42 votes

The bitcoin mining algorithm from a programmer's viewpoint

This page: Blocks said mining is actually to solve a mathematical problem, but reading Block hashing algorithm doesn't give much help. I also tried reading bitcoind source code, but reading code takes ...

block proof-of-work algorithms mining-theory block-header  
asked by Mark Ma 26 votes
answered by John Henry 38 votes

Can someone explain how the Bitcoin Blockchain works?

I'm trying to figure out how the blockchain works and how to read it via blockchain.info website. Is there a laymen way of explaining how the block chain works and how to read the blockchain to trace ...

blockchain  
asked by Patoshi パトシ 64 votes
answered by Murch 67 votes

Can you answer this question?

Exchange quote and base volume - Is the total volume shared?

I'm currently trying to figure out if the volume of a pair/ticker etc Bitcoin/Tether should be credited to the base in the pair or both the base and the quote (50%/50%) I thought that the volume was ...

exchanges exchange-rate volume ticker  
asked by ii iml0sto1 1 vote
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