0
votes
1answer
6 views

See How Many Bitcoins Existed

Is there any way I can find out how many Bitcoins existed at a certain point in time? Are there charts where I could, for example, see how many Bitcoins were in existence in 2011, so I could compare ...
1
vote
1answer
23 views

How do I reward a miner who made a block I like?

Some decisions miners make are reflected in the blocks they solve. Is it possible to send those miners some extra BTC without knowing who they are? It seems obvious that you could just send some ...
1
vote
1answer
18 views

Why websites as satoshimines or bustabit generate new wallets every time?

Why a single wallet is not enough? Can't they just check the transactions? And if I want so, how can I generate unlimited wallets, send and receive from them? I am searching for an alternative to ...
1
vote
0answers
15 views

Why do most alt coin developers choose to remain anonymous?

Is having a known public identity not helpful in building reputation for a project? Are the privacy and security concessions associated with revealing your identity not worth the perceived benefit?
4
votes
1answer
93 views

What percentage of altcoins are based on Bitcoin?

What percentage of altcoins share the same codebase as Bitcoin?
8
votes
2answers
935 views

Largest Bitcoin transaction fee ever paid?

What was the largest transaction fee ever paid? Assuming that payment was an accident was the sender able to contact the miner who mined that block and negotiate a full or partial refund?
2
votes
1answer
19 views

Streaming API for confirmed transactions?

Is there an API that makes streams transactions as they're confirmed? Everything I can find seems to just be putting out unconfirmed transactions in realtime, rather than waiting for confirmation. To ...
5
votes
1answer
28 views

If there a formula to decide when more decimal places will be added to Bitcoin?

I know it is possible to allow for more than 8 decimal places in Bitcoin. We all hope that Bitcoin will become extremely valuable one day and increments smaller than 0.00000001 BTC will be helpful. ...
7
votes
1answer
32 views

Which country has the highest number of Bricks and Mortal merchants who accept Bitcoin per Capita?

I have seen many online directories of Bitcoin merchants but fewer bricks and mortar directories. Is https://coinmap.org comprehensive? The great majority all of the listings are for North America ...
5
votes
1answer
20 views

Without side chains will transaction fees rise as block rewards fall?

Transaction fees are currently minuscule when compared to block rewards. Even if transaction volume was 10x higher than it is now, this would be the case. Is there any realistic scenario where ...
4
votes
0answers
21 views

How to detect a fork with bitcoin-cli?

I'm keeping a simple log of blocks, and storing them in an array. When a new block arrives, I add it to the array. Let's say this is my block chain array: E <- tip D C B A Now, say a new ...
1
vote
1answer
33 views

How multi-signature wallets comunicate with each other?

I wonder How multi-signature wallets comunicate with each other? My favorite is copay. How do they comunicate with each other before payment is done? How is privacy handled between each multi-sig ...
5
votes
2answers
456 views

What is the safest physical to store a private key only to be accessed after death?

Assume that my friend would like to encrypt his Bitcoin private key(s) and safely store them in a secret location. This located would only be identified to heirs after death in his will. Should he put ...
11
votes
2answers
157 views

Are there any Bitcoin wallets with native I2P integration?

Tor usage seems to be fairly common with Bitcoin, but I have heard less about efforts of integrating with the I2P efforts. Tor and I2P both have their pros and cons, but I am curious to here about ...
5
votes
1answer
32 views

Why does Base58 WIF-format of PK have '5' prefix (the standpoint of mathematics)

I'm trying create raw private keys using the steps: Take a version of PK (0x80) and concatenate (as prefix)with my pseudo-random 32bytes-array. Take a calculated checksum (4bytes) and push it to the ...
4
votes
1answer
19 views

Lightning Network scaling alternatives?

I'm really looking forward to the Lightning Network and all the efforts being put in by Blockchain.info, Blockstream, and others. But I was wondering if there aren't other options for decentralised ...
3
votes
3answers
153 views

Blocked transaction wallet on my phone

Ok I have a wallet on my phone that I put bitcoins in on monday, They have been blocked now for a week. How do I unblock them and the wallet I am using I can get it on my mac. Its called bitwallet by ...
0
votes
1answer
18 views

transactions for future use

If bitcoins can be stolen via hacking, what's there to stop these already occurring events and bitcoins from falling right back into the hands of power. I mean bitcoins are capable of being ...
4
votes
1answer
54 views

Bitcoin without mining - what needs to be implemented

I have read this related question - Bitcoin without mining and I am trying to understand the very basics of Bitcoin network and the blockchain. I wonder, if we take the mining out of Bitcoin, what ...
4
votes
1answer
15 views

How to connect to a remote Bitcoin Core remotely

If I have 24/7 running bitcoind on a headless server, is there a graphical way to connect, maybe only temporarily to the server's Bitcoin Core daemon or its client to see if everything is going ...
1
vote
1answer
17 views

getting bitcoin address of blk*.dat files

I know that getting the address from the blk*.dat files is discussed a lot of times. But I don't get it why? When I have the raw scriptSig I can encode it and get the bitcoin address or not? E.g. the ...
2
votes
1answer
12 views

How many connections do I have on bitcoind?

How do I find out how many connections bitcoind has made? From terminal.
0
votes
2answers
16 views

How to get unique rpcpassword for bitcoind

I am on Linux Debian 8.4 and have one server running 24/7. I would like to help the Bitcoin network. On https://bitcoin.org/en/full-node#other-linux-distributions I got to the point where I should ...
1
vote
1answer
10 views

Can there be stale blocks in “header first” implementation?

The Bitcoin developer guide mentions stale blocks as not being in the longest chain, then moves on to orphan blocks. It states you don't get orphan blocks, "and if you do" they are just dropped. But ...
5
votes
1answer
90 views

How would I explain SegWit to a non-technical friend?

How can I explain the potential ease of scaling and feature benefits of Segregated Witness to a non technical friend? How can I explain the potential drawbacks of Segregated Witness in a non ...
5
votes
1answer
32 views

List transactions *relayed* by my full node?

Running Bitcoin Core full node 24x7, with 70+ peer connections. Is there a bitcoin-cli command that will let me see the transactions that my full node has relayed from its SPV "clients"? FWIW, I can ...
5
votes
1answer
34 views

What % of bitcoin transactions involve addresses of known charitable organizations

Blockchain analysis can come a lot way. Are we at the point where we can identify what percentage of transactions related to certain industries? What percentage of transactions involve a receiving ...
3
votes
3answers
39 views

A Wallet for many blockchains (not just the bitcoin blockchain)

In terms of the future of the trust network where there will be an increasing number of fit-for-purpose blockchains such as ones for proof of asset, proof of identity, proof of ownership etc., will ...
1
vote
0answers
21 views

Verification exception : Unexpected

i have cloned litecoin wallet and edit it connect to the network we have created. I disabled checkoints, changed params and the block syncs for 32 blocks. Then i get the following error 05-26 ...
4
votes
2answers
44 views

Micro-payments definition and ideal platform

Have developers come close to reaching a consensus on either: The definition of micro payments? Whether micro-payments ideally belong on the main chain or side chains?
0
votes
1answer
50 views

blockchain wallet dont work

i can not see my balance and history of transaction http://prntscr.com/b8mgoy also i cannot send any amount http://prntscr.com/b8mgy2 I have received a lot of transaction since yesterday on generated ...
1
vote
1answer
22 views

how to determinate which output is used as new inputs

i finding answer few hours yet so maybe someone can send me on right way please. i still dont understand well to this problematics: i want to find from which wallet(address) comes coins to newone... ...
0
votes
2answers
62 views

I have a stuck transaction (2 days already) [duplicate]

[SOLVED] I have this transaction : https://blockchain.info/tx/8fdb3e8a0a33b3d1721b6ef7c1c2608b1e1a8aacd8857e22287b120c09ee988a I understand it's stuck because of the low value i spended but look at ...
4
votes
2answers
34 views

How would one monitor an address for a transaction and 1 confirmation in PHP?

I have a small PHP script with my static bitcoin address shown. When someone sends any btc to that address, how can I get the PHP script to check if the transaction has had 1 confirmation? Do I have ...
5
votes
1answer
34 views

Sharing BIP32 extended master public key

I have User A who generates BIP32 Master Public and Private Keys. It shares the Master Public Key with User B. Using the Master Public Key User B generates Address of A and Issues bitcoins from ...
10
votes
2answers
318 views

What security weaknesses result from using off chain solutions?

What type of security weaknesses are potentially created by using off chain solutions (such as the lightning network) for a portion of Bitcoin network traffic?
3
votes
2answers
104 views

Is it possible to combine two separate transactions into one transaction by only using their signatures?

I have two valid txs and two valid signatures for those txs. Right now they look like: 1) A -> B 2) C -> D A and C are inputs & B and D are outputs. I want to be able to combine them ...
3
votes
1answer
41 views

Why are there different mining hardware for different hashing algorithms?

I have a question about mining hardware and hashing algorithms. Why are there different mining hardware for different hashing algorithms? Why can't we use antmine for ether or lightcoin mining? Is ...
9
votes
2answers
688 views

Why do leading ASICs manufacturers sell their chips? [duplicate]

I understand that some people have access to cheaper electricity than others. However why not just open mining facilities in the parts of the world offering the lowest cost structure? If that is not ...
4
votes
2answers
72 views

how does the creator of Bitcoin get paid?

Is the exchange the only people making money of the purchasing of bitcoin or is the creator profiting as well?
4
votes
1answer
36 views

replicating in python what the electrum wallet does during (deterministic) wallet creation

I am trying to replicate in python what the Electrum wallet does during (deterministic) wallet creation. IMHO the docs are a bit sparse on this one bit maybe because its only performed once for most ...
0
votes
1answer
28 views

How do developers fix bugs when compiling takes so long?

It takes so long to compile Bitcoin Core on my machine... I can't imagine trying to fix bugs like a missed semicolon and having to wait an hour for the compiler to finish before testing. Is this ...
0
votes
1answer
35 views

How to use the BIP-32 keys

I am trying to built an application that uses the BIP-32. But I am not sure on how to use it. I have a passphrase with which I generate the Derived Private Key and Derived Public Key. If I share my ...
0
votes
0answers
27 views

Litecoin clone with no checkpoints

My Question is this: I am creating a little altcoin clone from https://github.com/Litecoin-Java/bitcoin-wallet but i want the new coin to have NO checkpoints. So what i did is comment out the of ...
0
votes
1answer
20 views

Is there a way to get the memory pool in order of newest first?

I'm trying to list out the results of getrawmempool by newest transactions first. Here's what I've got: getrawmempool returns the memory pool in order of transaction hash, so I'm using PHP to sort ...
3
votes
3answers
38 views

How long is a Bitcoin?

I searched already but I couldn't find anything about the structure of a bitcoin. My understanding is that a bitcoin which is different AFAIK from a bitcoin address can be interpreted as a string of ...
5
votes
1answer
27 views

How many currencies can be traded directly for Bitcoin?

Most major fiat exchanges seem to focus on the USD, Yuan, Ruble, EUR, etc. How many currencies have direct online BTC conversion options? Are more on the way?
7
votes
3answers
1k views

How bitcoin works? - for programmers

I am a senior Python developer. Recently I came across to the need of fully understanding how bitcoin works on it's core. The Internet is full of explanations and tutorials for regular folks and ...
0
votes
0answers
10 views

Bitcoin Wallet - host/login/pw

I was looking into creating a bitcoin based site. I am fairly new to bitcoin wallets in general and was wondering if there is a guide to integrate a bitcoin wallet(maybe through blockchain api) to my ...
1
vote
1answer
31 views

What's the best way to transfer bitcoins between two exchanges

I'd like to transfer bitcoins in my Kraken account to my Poloniex account. What would be the best (a.k.a. cheapest) way to do that? Thanks in advance

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