All Questions

0
votes
1answer
17 views

Can you send a transaction from non-native segwit to native(bech32) segwit address?

Let's say I have a wallet with a non-native segwit address (prefixed with 3- like multisig). Can I send my utxos from this address to a native segwit (bech32) address?
1
vote
1answer
24 views

Non-spend Blockchain.com

A bitcoin trader opened a blockchain wallet for me and then sent me my profit but it is non-spendable. I know they can no longer get into my account because I changed the password and I have two-step ...
2
votes
2answers
34 views

How does the structure of a segwit block differ from a non-segwit block?

Is there any difference in the structure of a segwit block in comparison to a traditional non-segwit block? A diagram would be helpful if possible.
0
votes
0answers
56 views

Watch-only addresses inside segwit transactions

I'm using bitcoin core (via rpc api). I've generated one 2of2 multisig address on electrum wallet, and after that, I've imported that address into bitcoin core by using importaddress rpc method. When ...
1
vote
1answer
19 views

Why is the wtxid considered malleable?

Why is the wtxid considered malleable since the transaction is unconfirmed? How can a third-party modify it?
0
votes
2answers
32 views

Reference an UTXO of a transaction that has not been yet mined

How to reference an UTXO that has not been yet mined? I want to prepare a transaction and, before spreading it, use its UTXO as input for another relative timelocked transaction. Then, spread the ...
0
votes
2answers
30 views

How to fund a bidirectional payment channel?

Assuming two users want to create a bidirectional channel between themselves such that user_1 wants to pay 2 BTC to user_2 at the end and he divides this amount into 10 micro-payment (each micro-...
0
votes
1answer
13 views

I can not get btc on Copay wallet

1EcWMDBH3W6CLu5nM9CjvqbFZefvdv8y1a I send 2.48 btc to this add on Copay wallet. But now, i can see on Copay. Copay say: network error. Please help me!!
0
votes
2answers
54 views

how bitcoin reject invalid transaction? (with createrawtransaction)

i'm studying 'Mastering Bitcoin' and have a questions, in this book, we can send coin to other wallet by createrawtransaction but there is no enough secure method. we can find other's wallet ...
0
votes
1answer
24 views

How to calculate the transaction size?

Is it possible to calculate the transaction size from the transaction id ?
1
vote
2answers
37 views

How is proper fee rate got on Bitcoin Cash

I'm developing wallet system trading BTC, BCH and so on. In BTC, I'm using estimatesmartfee API to calculate by transaction size and relayfee to guarantee minimum fee and it works well. In BCH, though ...
3
votes
3answers
45 views

Does a bitcoin node broadcast that it is full synced?

When a bitcoin core node is fully synced, does it broadcast to the rest of the network that is has finished syncing? If yes, where in the bitcoin-core source code is this implemented?
2
votes
1answer
44 views

How does nSequence/Check Sequence Verify work?

How does relative timelock work? I mean, I know the theoretical description, but how to use nSequence concretely ? Can you do me a practical example with 2 sample transactions one of which locked with ...
0
votes
0answers
16 views

Installation problem with Bitcore.io on Mac

I'm normally not too brain-dead about this stuff, but I've been unable to force this one through. I'm trying to install Bitcore (per their instructions here) but and have set nvm to the LTS version 4,...
0
votes
2answers
32 views

How could a lightweight wallet determine the validity of 0-conf transaction?

I found that a lot of people are interested about security of 0-confirmation payments. But, it seems that most discussions focused on double-spending (like broadcasting two or more conflicting-but-...
0
votes
1answer
53 views

how long can it take me to get 1 BTC on mining speed 30.9945H/s and 72.99451H/s respectively

im new to this biticoin mining, i justed to know is it going to earn me anything soon where my mining speed is at 30.9945165416H/s and 72.9945165416H/s really? how long can it take me to get 1 BTC ...
0
votes
4answers
60 views

Sent BTC to public key instead of my address

Friend of mine was trying to buy BTC from ATM, instead of BTC address he scanned the public key from coinomi wallet (I dont know why the ATM accepted it, but it did). Is it possible to somehow access ...
1
vote
1answer
23 views

How to determine right address from address hash

I'm using private libbitcoin server and libbitcoin explorer. When I use bx fetxh-transaction, it returns something like: I'm trying to figure out, how to get right address from address_hash. When I ...
0
votes
1answer
12 views

How to subscribe for blockchain webhook

Please how do I get to subscribe to a BTC address to webhook for unconfirmed transactions?
0
votes
1answer
13 views

Getting weird error while sending with btc app

Not sure why this error message is coming up
1
vote
1answer
22 views

can not access via RPC to litecoin node

I set up a litecoin full node in AWS. I opened ports 22, 80 and 9332. Also from my laptop I cloned this project https://github.com/janoside/btc-rpc-explorer I executed on my local but unfortunately I ...
-1
votes
1answer
52 views

How to do a 51% attack on my own altcoin [on hold]

recently I have been curious about 51% attacks so I created a fork of litecoin and want to do a 51% attack on the coin but don't know how to. please can you tell me how to do it. Thanks,
1
vote
1answer
41 views

How do I know that the majority of bitcoin miners are not XYZ government's facilities?

Even if "Satoshi Nakamoto" is/was actually a real person, how can I be sure that XYZ government (XYZ can be US, or China, or ...) does not have now (or will not have in the future) 51% of the hashing ...
1
vote
1answer
34 views

Electrum's “script hash” form with NBitcoin?

I've come across how scripts are hashed in the electrum (stratum) protocol implementation by looking at the docs. I'm using NBitcoin, and I've tried to generate this hash from a segwit address, first ...
1
vote
1answer
25 views

Running lightning in prune mode

I am running lightning with the LND implementation and a full node. Nevertheless, I heard that it is possible to use Lighting in pruned mode. How is this possible? I read in the LND install ...
0
votes
0answers
16 views

Validate 3rd party transactions on Bitcoin-qt debug window

Is there a way to validate a random transaction via transaction ID on the debug window? Imagine I want to validate a transaction between 2 wallets I don't control. I believe its possible to check if ...
0
votes
1answer
22 views

Is the price of BTC transactions driven down by the influx of miners?

I'm wondering why Bitcoin transaction speed doesn't increase (and cost decrease) due to more people becoming miners all the time. Is it because the number of transactions is increasing even faster?
0
votes
0answers
14 views

BitCoin not signed in when trying to CreateInvoice

In code bellow I'm trying to create Bitcoin payment: var privateKey = "f267c05d4552b92825e46cfe056d6e3ff36072538f71d8c5acf3ebc4b09f4c87"; var key = new Key(Encoders.Hex.DecodeData(privateKey));...
0
votes
1answer
47 views

How to regain access to my coins? (unknown digital location) [on hold]

I transferred some bitcoin from my wallet in HitBTC to my wallet at Bittrex. Block Explorer shows the transfer completed. and so does Hit BTC. Bittrex claims they never got the crypto and there's ...
1
vote
1answer
41 views

How do 'Sphinx' invoice-less payments on the Lightning Network work?

There was recently a WIP draft published to the lnd Github, for a 'Sphinx payment mode' for Lightning Network nodes. To quote Roasbeef from the Github PR: [this allows] the ability to send a ...
0
votes
1answer
34 views

Transaction haven`t got

5 days ago some Pokerroom sent to my Bitcoin Core wallet a slight amount of bitcoin. I checked it on Blockchain, it's OK. But, unfortunately, still there is no bitcoins in my wallet. I've also sent ...
1
vote
1answer
36 views

Could decentralised proof of time in BCHSV solve for high PoW power consumption?

0-conf requires decentralised consensus of time in order to determine the order and time of each transaction. Bitcoin has a block time of 10 minutes achieved by brute forcing hashing algorithms of ...
1
vote
1answer
52 views

Errors when building/sending multisig transactions

Going by the example here: https://bitcoinj.github.io/working-with-contracts I believe I've done everything correctly. Yet my program fails either to propagate correctly or because of a tx error and ...
-1
votes
1answer
19 views

Maidsafecoin sent to Ledger Nano S

I sent maidsafecoin to a segwit Bitcoin address generated by my Ledger Nano S. My understanding is the coin is safe at the address and the Nano recorded the transaction as a very small amount of btc. ...
0
votes
0answers
21 views

How do i access non spend on my blockchain wallet [closed]

My Balance shows non spend how do i access the balance to be in my wallet
1
vote
1answer
34 views

What is a fee market? Does it mean that blocks should be full, esp. after several halvenings?

As we all know, Bitcoin had experienced an unprecedented long-lasting congestion period in 2017. This seems quite horrible to some people generally, but it seems that such phenomenon was on the ...
0
votes
1answer
87 views

Is this one of the strategies used by whales to manipulate BTC? (real example)

This is a graphic from yesterday (BitMEX:BTC, 1minute candles): A price drop from $4000 to $3730 in 7 minutes Volume in those 7min was $140M Is possible that something like this happened (...
3
votes
1answer
61 views

Lightning Network `channel_update` message Flag clarification

This is a lnd.log line: 2019-01-11 12:20:13.904 [DBG] PEER: Sending ChannelUpdate(chain_hash=000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f, short_chan_id=601495532567724033, flag=...
3
votes
2answers
39 views

Is there actually a dilemma of whether or not to publish channel states for LN nodes?

I've heard that there is such a dilemma for LN: if channel states were not published, the payer will not able to find any viable path, unless he takes brute-force-like probing approach (which looks ...
0
votes
1answer
17 views

How to get BTC and ETH prices from Binance in Google Sheets?

I've been using the CRYPTOFINANCE() function in Google Sheets for a while but I can't seem to find out how to pull data from my exchange (Binance). I'm specifically looking for the BTC/USD and ETH/...
1
vote
0answers
17 views

Stablecoin / Fiat trading [on hold]

I was exploring recent crypto news and it seems that i don't get a point in the stable coins trading. Is there any logical reason to trade (with leverage) stable coins over fiat?
3
votes
1answer
84 views

Why did my lightning node not route payments after I have funded 5 payment channels?

I have setup a docker-compose with bitcoind and clightning. After 28 hours funding 5 channels I see nothing at all. I do not expect income, but at least that the channels are used. $ lightning-cli ...
1
vote
2answers
30 views

Each full node has different mempool?

I don't understand if each full node has different mempool inside. With RPC command getblocktemplate I can Get the information about candidate block. I can Find all transaction verified but ...
0
votes
1answer
47 views

How do you sign data with a private key? [javascript]

Using BlockCypher’s signing tool (link), I can sign the following data: 05de69f5d37f41340eed3230f03d2394dde5e497738a76f027b7d962a0cbdf39 with the private key: ...
0
votes
0answers
26 views

Forgot my blockchain password [closed]

I forgot my Blockchain wallet password, how can I get it back when there are no 12 backups?
12
votes
1answer
1k views

What is the origin of insecure 64-bit nonces in signatures in the Bitcoin chain?

In Biased Nonce Sense: Lattice Attacks against Weak ECDSA Signatures in Cryptocurrencies Joachim Breitner and Nadia Heninger use a lattice based algorithm to recover private keys from signatures in ...
-2
votes
0answers
22 views

How add payment crypto as bitcoin, allcoin to website? [closed]

I want add payment cyspto bitcoin, and allcoin to website by PHP? Do you help me
1
vote
1answer
35 views

Extract sender ID and recipient ID of a bitcoin transaction

I'm new to this world and I'm trying to learn the blockchain world and especially now I've concentrated du bitcoin-core, I would like to parser and get the various information like the various sites ...
0
votes
0answers
38 views

How to access bitcoins with my private key but no passphrase?

I utilized a website, bitcoinpaperwallet.com, to randomly generate a Private and Public key pair for Bitcoins storage. This new Public address is now available for anyone to send bitcoins into....
1
vote
1answer
30 views

Maximum standard input script size

What is the maximum size for an input script so to be considered standard ? Looking at the Bitcoin Core source code it appears to be 10'000 byte, however reading here and there, it appears to be 1650 ...

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