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2,785 questions with no upvoted or accepted answers
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16
votes
1answer
953 views

Peergroup download of the blockchain stalls?

I'm using bitcoinsharp to build my client. I try to download the blockchain in a peergroup network. Download starts, but when progress is 98%, the download is stopped & the client is waiting (2 ...
7
votes
2answers
800 views

How to get notification on bitcoin receive with bitcoin core

How can I get Bitcoin receive notifications with Bitcoin Core. I have tried the walletnotify and blocknotify options. walletnotify is fired two times when I send or receive bitcoins. And with ...
7
votes
2answers
576 views

How does a mix between Proof of Work/Stake work? (Peercoin)

I think I understand Proof of Stake and Proof of Work from a conceptual point now. For themselves both are good ideas for sure, but how would a crypto currency like Peercoin (PPC) combine both of them?...
5
votes
0answers
56 views

How to emulate SIGHASH_NOINPUT using CHECKSIGFROMSTACKVERIFY?

I read on bitcoin-dev that CHECKSIGFROMSTACKVERIFY (CHECKDATASIG in BCash) can be used to emulate new sighash flags. How would that work, concretely? As an example, please provide an example update ...
5
votes
2answers
331 views

19 out of 24 words of BIP39 passphrase (brute-force last 5?)

I have managed to lose 5 words of my 24 word Ledger Nano S recovery phrase. I have words 1-19 but I am missing words 20-24. I have significant holdings on the wallet so would very much like to recover ...
5
votes
0answers
98 views

Why did the lightning network implement a gossip protocol?

As pointed out by many lightning developers in the past (e.g. Rusty's 1 million channel challenge) the gossip protocol is quite noisy and a part of the BOLTs causing many engineering challenges. ...
5
votes
0answers
140 views

Did the introduction of VerifyScript cause a backwards incompatible change to consensus?

My question is about the changes to bitcoin done by commit range [a75560d8, 6ff5f718], and their effect on consensus. Out of this range of four commits (all attributed to satoshi) during the dates ...
5
votes
1answer
339 views

Mixing Unequal Inputs

Let's say have 3 inputs (alice, bob, satoshi): 0.3, 1.3, 1.6. We can mix these inputs for example like this: 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.1, 0.1. Or like this: 1.3, 1.3, 0.3, 0....
5
votes
1answer
1k views

How do I remove Wallet from Bcoin?

I'm playing with bcoin cli and created lots of wallets. Is there any way to remove wallet via WalletDB Api?
5
votes
1answer
850 views

Creating Mining Competition on regtest

As we know , Bitcoin core-Regtest is used to set up our own blockchain starting from Genesis Block. I have created Two nodes on my localhost running on different ports (I am using Windows 8.1). They ...
5
votes
1answer
359 views

Can*t call chainActive.Tip()->nHeight in core.cpp

I want to call chainActive.Tip()->nHeight in core.cpp. It is not possible, I am interested in every idea. https://github.com/LIMXTEC/BitSend/blob/DEV-joshafest/src/core.cpp Here is an example : ...
5
votes
2answers
592 views

Is it possible to discover the set of bitcoin addresses from a public key?

I'm trying to find the set of bitcoin addresses from a public key associated with a user just to analyse this user transaction. Is there any way to derive/find all the addresses that have been ...
5
votes
1answer
1k views

Cannot create a transaction

I am trying to create a transaction on the bitcoin testnet, using bitcore: Error Message : SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data Here is my code: var ...
5
votes
0answers
271 views

BTCJam API 500 errors

I am currently trying to set up an application using the BTCJam api. I think the api could be very useful, but I have been unable to get it to work fully, and since support isn't responding, I thought ...
5
votes
1answer
320 views

bitcoind and rollntime support

According to this page: https://en.bitcoin.it/wiki/Poolservers bitcoind's rollntime support is 'Supported, but not advertised'. I am taking that to mean that it doesn't provide the X-Roll-NTime ...
5
votes
1answer
489 views

Test Network Genesis Block

I am using BitcoinJ for my java application which fetches the test network's genesis block. I referred to the basics mentioned at JavaWorld and BitcoinJ's Google Code wiki. I am able to get it ...
5
votes
2answers
811 views

bitcond and bitcoin-Qt system configuration and bandwidth requirements

What is the best operating system configuration for a computer to run (bitcoind or bitcoin-Qt) and (BFGminer or CGMiner) under Linux, assuming that it will be connected to a 3 Terrahash mining rig on ...
4
votes
0answers
84 views

How did Nakamoto untraceably pay for registering bitcoin.org?

Wikipedia says "Nakamoto created a website with the domain name bitcoin.org" and "transferred several related domains", while bitcoin.org says it was "originally registered and owned by Bitcoin's ...
4
votes
1answer
684 views

How does Coinbase / GDAX calculate volume in historical candles?

How does Coinbase/GDAX calculate the "Volume" in candle data? I'm pulling data from the GDAX API in 2 ways; 1, by requesting candles similar to this endpoint, and 2, by tallying up raw tick data from ...
4
votes
0answers
638 views

To sign raw transaction in Segwit

I am using Bitcoin core 0.14.1 testnet. I created a Segwit address. transfer some coins to this address. Now I want to spend it. I created a raw transaction using console command i.e. ...
4
votes
2answers
505 views

Tax implications of bitcoin income

I have a friend in the USA who can send me bitcoins. The idea is to sell the bitcoins in India and wire him back the money from the sales proceeds in India. What are the tax implications on the sale ...
4
votes
0answers
434 views

Good way to test Electrumx?

Has anyone else gotten an electrumx server up and running lately? I have just gotten to the point where I'm not seeing any errors during "# service electrumx status", but I'm also not seeing my ...
4
votes
1answer
311 views

Which RPC may I use to query bitcoind for raw transactions coming through?

I need to capture and store the raw transactions coming through my local full-node bitcoin instance. I read here that it is possible, but there is no mention of the particular RPC calls. I also see ...
4
votes
0answers
384 views

How to Use TransactionBuilder in NBitcoin

I have used this code. It returns a success, but does not send bitcoin. var txRepo = new NoSqlTransactionRepository(); // Let’s me introduce you, Alice, Bob, Satoshi, and Nico with their ...
4
votes
1answer
256 views

How to build Merkle root from merkle branches?

Is there any help/tutorial on how to build the Merkle root from stratum data? The Slushpool's stratum protocol has an example of a mining job but it does not contain any Merkle branches and I don't ...
4
votes
1answer
562 views

Wallets that support payment channels?

I know that maybe it's a bit early to start asking Wallets to implement Lightning Network connections even if the majority don't support SegregatedWitness yet. But how about Payment Channels? In ...
4
votes
0answers
434 views

Bitcoinj: How to fix error “You should use Context.propagate() or a ContextPropagatingThreadFactory”

I'm using bitcoinj from a Scala application... and when I start it, I always get the following errors: [error] o.b.c.Context - Performing thread fixup: you are accessing bitcoinj via a thread that ...
4
votes
0answers
2k views

publicly available json-rpc node for bitcoin-cli connection

There is a service provided by blockchain.info described on json_rpc_api page. More or less it describes the API that user can use to access their blockchain similar way as using bitcoin-cli to own ...
4
votes
1answer
445 views

Cryptocompare API

Anyone here using cryptocompare api? Where would be the best place to ask questions about it? I am just starting with it and for example I have stumbled upon few issues. Like, coin tickers with an ...
4
votes
1answer
422 views

What are the weakest cryptographic guarantees in Bitcoin?

I read in this Github pull that Bitcoin relies on weaker cryptographic guarantees than SHA256. What are the weaker cryptographic guarantees being referred to? Could it be that RipeMD is 160 bits? ......
4
votes
2answers
3k views

Where to find P2pool networks.py settings for altcoins?

Is there a forum post or website where all the altcoin networks.py settings are being shared? I can see the P2pool forks on Github where people commit their own networks.py settings back to their own ...
4
votes
1answer
342 views

How to explore transaction chain via Original Bitcoin API as blockexplorer does it

Is there any possibility to explore transaction chain via Original Bitcoin API (https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list) as the blockexplorer does it. If not, why?
3
votes
0answers
14 views

How can I force estimatesmartfee to return estimates on regtest?

Creating an app that utilizes estimatesmartfee, and it works in production, but I use regtest for automated testing and can't get it to return a value. Looking at bitcoind tests it is splitting UTXOs ...
3
votes
1answer
73 views

How does the tx fee in sendmany method get calculated?

In sendmany there is a conf_target parameter with the comment "Confirmation target (in blocks)". Does that mean that Bitcoin Core implicitly calculates and sets a smart fee for a given block target? ...
3
votes
0answers
59 views

How can you construct a cycle with LND to rebalance one of your channels with another?

I have at least two open channels, one of which has inbound capacity and the other has outbound capacity. How can I find a route and construct a payment to rebalance my channels against each other ...
3
votes
1answer
114 views

i need to get the correct wallet so i can use my pass phrase to recover my btc wallet. this was january 2009

the btc core wallet let me choose my own passphrase with 12 -16 words. the latest would be late january early febuary 2009. what wallet was i using? I cant find a reference online. everyone says that ...
3
votes
1answer
58 views

reproduce CVE-2018-17144 (inflation bug) on regtest for learning

I'm reviewing CVE-2018-17144 inflation vulnerability for learning. I think I reproduced the error on regtest. Is it a correct way to reproduce it? I want to know if I'm missing something about it. ...
3
votes
0answers
78 views

Bitcoind 0.5.3 stuck at block 364,670 - what to do?

I compiled bitcoind using the same steps as last year. In particular I set DB_CONFIG: set_lg_dir database set_lk_max_locks 537000 Unfortunately once I hit block 364,670 (2015-07-10) I'm treated with:...
3
votes
0answers
78 views

Obtaining historical orphaned blocks (chaintips) without old node

I'm attempting to do some research surrounding orphaned blocks within the Bitcoin network. From my understanding the best and really only way to obtain data for blocks that no longer exist in the main ...
3
votes
0answers
159 views

Python library for Multisignature HD wallets

Is there is any python library is available that allow creation of Multisignature HD wallets ?
3
votes
2answers
524 views

Same seed from Electrum but generate different Bitcoin addresses

I am using Electrum 3.2.2, I have the wallet file generated from Electrum and a password to decrypt the file. There is an error whenever I am trying to send Bitcoin out of that wallet, so I decide to ...
3
votes
2answers
100 views

Bitcoins transaction is completed but I don't get the coins

I got the bitcoins but it's not getting added to my wallet, I even got the email etc. and it shows up but see this Transaction is not available at this time
3
votes
2answers
303 views

Who does the work in proof of stake (POS)?

I heard about proof of stake lately, and people are saying you don't need GPU or any mining power, as long as you have the coins, they will generate you more coins (more coins you have, more earnings ...
3
votes
1answer
2k views

Forking PIVX - ERROR: CheckBlockHeader() : proof of work failed

I have forked PIVX and generated new genesis block hash, merkle root and nonce, and changed the rewards parameters. It compiles fine and the daemon starts, I have even got 2 nodes connected, but ...
3
votes
2answers
117 views

What information is available from the blockchains of privacy currencies?

Some currencies such as Monero and Zcash focus on protecting user privacy as much as possible. What information is available from the blockchains of these currencies? Number of wallets? Transaction ...
3
votes
0answers
287 views

HD Wallets - Generating P2SH-P2WSH Addresses from a ypub-type mpks in PHP?

I am writing a webapp in PHP that needs to generate Bitcoin addresses from their mpk. I have successfully done it for P2SH addresses (starting with a 1, with a xpub mpk) using the BitWasp php library,...
3
votes
0answers
3k views

How to recover corrupted Bitcoin-Core blockchain?

I recently experienced a I/O error resulting in data block corruption or index corruption cause bitcoin-qt wasn't quitting so I forced bitcoin core to shutdown without killin it properly. I checked ...
3
votes
1answer
752 views

Can Bitcoin Diamond be claimed on Segwit addresses?

I currently have my Bitcoin (BTC) on a Trezor hardware wallet with Segwit (Not in a "Legacy account"). Can I claim Bitcoin Diamond (BCD) with this or not? In general: Should I move my BTC to a ...
3
votes
0answers
236 views

How do you regenerate all 2-of-2 multisig addresses from two xPrivkeys?

If I want to get the private and public keys of all transactions that have happened on my multisig wallet. How would I do that? It's a 2-of-2 multisig setup. I have an xPrivkey on my computer and an ...
3
votes
3answers
146 views

Value of Product Based on Bitcoins

If I chose to accept Bitcoin as a payment for my product, and the price of the bitcoin goes up or down, then technically I am not getting as much for my product in the long run correct? Because the ...

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