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Can you give me an example of a P2MS tx at testnet?

I am checking on the test net before applying current update. I'd like to check P2MS, which is "bare multisig," and I'd like to know the testnet transactionID of this. Or is there an ...
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  • 101
4 votes
1 answer
41 views

Which wallets or libraries besides core support (or will support) P2TR descriptors?

I want to help test the WIP Bitcoin Dev Kit "Add support for Taproot and tr() descriptors", PR #593 against other implementations besides Bitcoin Core (already testing again Core 22.0). In ...
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0 votes
1 answer
31 views

Do wallet companies send user's transactions to their own "central" bitcoin nodes?

Do external wallets companies such as muun, bluewallet, or greenwallet send user's TXs to some "centralized" data center where they own some nodes to broadcast the TX to the blockchain? If ...
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0 votes
1 answer
34 views

Isn't the power of blockchain coming from decentralization instead of immutability of blocks?

I've only started exploring the working of blockchain. So what I've gained from guides on Google has me into thinking that what makes blockchain records resilient to corruption is distributed storage, ...
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3 votes
2 answers
77 views

What are some projects that have taken advantage of Bitcoin's taproot upgrade so far?

Are there any projects as of 2022 May that have taken advantage of Bitcoin's taproot upgrade? I'm still trying to understand what can be built with this taproot feature.
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1 vote
1 answer
22 views

Unprune & Re-Download Failed. Core asks for a "-reindex" due to chainstate, then fails

I was attempting to return from pruned to unpruned chainstate. Unchecked the pruned box. Core cautioned this would require re-download of the blockchain in its entirety. OK, fine. Shutdown Core to re-...
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2 votes
1 answer
128 views

What should I do about these messages in Bitcoin-core's debug-log?

Help, with bitcoin core : AFTER the Rescan : 1 - rescan 2 - response output, on the debug file out: 3 - FlushStateToDisk: write coins cache to disk (coins, kB) completed (s) , OK 4 - Imported mempool ...
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1 vote
1 answer
28 views

How to import private keys from Multibit 0.5.13 to another wallet?

Can anyone help trying to recover funds from my multibit wallet? I have the key file and private keys. Is there any way I can import them into another wallet? I tried to sweep them with electrum, that ...
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2 votes
1 answer
147 views

Segwit includes the input amount in the SignatureHash. What possible attack can this prevent?

Legacy transactions only include transaction components in the SignatureHash, but segwit transactions also add the amounts of inputs in the SignatureHash. Quoting from the Mastering Bitcoin Book: ...
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1 vote
0 answers
30 views

Electrum 4.2.1 GUI - Console payto error

I am using Electrum 4.2.1 GUI. I have tried using command payto in console and got the error below. What I can do? Is there any new command for this version or I am missing configuration? >>> ...
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  • 21
4 votes
1 answer
2k views

How is mining the exact same hash on every computer avoided?

How does the mining clients make sure that the seeds are not the exact same computed on every mining rig in the world with for example a GTX 1080 with the same speed? So that it is not the quickest ...
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  • 41
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2 answers
54 views

How would one turn a Miniscript tree into a Taproot tree with Taproot'd Miniscript?

How would one turn a Miniscript "tree" into a Taproot tree with Taproot'd Miniscript? (To be clear unlike a Taproot tree a Miniscript tree likely would't be surfaced to the user. Breaking ...
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0 answers
14 views

How to verify Bitcoin transaction against a specific user? [duplicate]

I am working on project .i have a functionality where user can submit bitcoin to my wallet .and after submitting bitcoin a payment page will open and user will fill payment details e.g his/her bitcoin ...
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0 votes
0 answers
37 views

How can I import my private keys in Bitcoin Core v23.0?

I have synchronized the whole blockchain. I have imported my private keys but balance stays on 0.00000000 BTC. I imported my address and now my BTC shows as "watch-only" in overview. How do ...
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0 votes
1 answer
63 views

How can I send all coin from bitcoind in one command without being manually involved?

I have tried with the commands below sendtoaddress <address> `bitcoin-cli getbalance` "" "" true sendtoaddress <address> "bitcoin-cli getbalance" "" ...
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  • 21
2 votes
1 answer
66 views

Probability of mining maximum of 3 block in next 20 minute

I know that block interval in bitcoin blockchain is exponential distribution. Now I want to know what is the probability that maximum of 3 block will be mined in the next 20 minute?
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1 vote
0 answers
356 views

crypto.com defiwallet sends bitcoin to random segwit address if a bitcoin taproot address is selected after confirmation of the correct address [closed]

UPDATE: Crypto.com acknowledge the bug and refunded the full amount, at the time of writing this update the crypto.com team confirmed that they are working on fixing the bug and the defi wallet will ...
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2 votes
2 answers
794 views

Can I transfer BTC from BTC (address) wallet to a Lightning (address) wallet?

I would like to know if I can send BTC from a BTC address to a Lightning Network address. I have BTC on an exchange and I would like to move them from the exchange to my Muun wallet. Muun allows on-...
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1 vote
1 answer
20 views

Can I make a keysend/amp payment having an invoice?

I am trying out sending/receiving payments between BlueWallet, Muun wallets and my locally running lnd node. I managed to successfully pay an invoice generated by BlueWallet or Muun from lnd node on ...
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3 votes
2 answers
459 views

There are a lot of 100 input transactions in some blocks, what's the reason?

In block 736302, we can see a lot of 100 input transactions. And this can be seen also in 736567, 736299 and so on. Is this only a coincidence?
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  • 33
0 votes
1 answer
52 views

How do transactions get into the mempool?

I was tracking a transaction using a Bitcoin Core command. I was able to extract info on whether the transaction had entered the mempool. Among the information I got were details such as "the ...
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0 votes
1 answer
25 views

Will remote RPC under http expose the rpcusername and rpcpassword?

I'm confused with the examples of contacting bitcoin-cli as the examples always show sending user name:pass to http does this expose the name:pass? This command: (I modified the help example from ...
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1 vote
1 answer
54 views

Why is the Generator Point G for secp256k1 curve typically indicated in (y,-x) quadrant?

Generator Point G for the secp256k1 curve is typically indicated below where the curve intersects the y-axis. At x=0, y=sqrt(7) and -sqrt(7), which are both small numbers less than 3, but G is an ...
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  • 33
0 votes
1 answer
65 views

How can I create/provide crypto currency wallets to my users?

I am interested to know, if I want to make a facility to my website users to be able to pay/buy with crypto currencies, also to gain ability to send/receive crypto currencies together( something like ...
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  • 101
1 vote
1 answer
179 views

Can I use the Bitcoin Core CLI to learn the block height at which a transaction was mined?

I am interested in figuring out at what height a transaction was mined, but I cannot find the right command to extract this information. Perhaps it's not possible? My Bitcoin Core was not involved as ...
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1 vote
0 answers
27 views

Which offers more privacy, coinjoin-whirlpool or non-KYC online exchanges?

After buying crypto with fiat on a KYC exchange, instead of just moving the crypto to a wallet, I understand that I should get more anonymity from tracking by putting the coin through coinjoin or ...
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0 votes
1 answer
47 views

How do crypto exchanges create wallet for their customers?

I am new in Cryptos. I noticed that when I want to trade in an exchange it needs to create a wallet on their website. It seems this is the wallet they create for a user like what he/she can create him/...
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  • 101
1 vote
1 answer
38 views

Is there a consensus as to what is meant by 'Nakamoto Consensus'?

I sometimes hear that bitcoin's key innovation was the Nakamoto Consensus, which solves the double-spend problem without the need for trusted third-party intermediaries. I take Nakamoto Consensus to ...
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0 votes
0 answers
21 views

Bitcoin core fails to load

I have just loaded the Windows version of Bitcoin Core (v22). But it fails to sync with the network. At around 6 days and 5 hours I see the following: Please note that despite 30 years IT experience, ...
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1 vote
1 answer
28 views

What is maxsigcachesize?

-maxsigcachesize= Limit sum of signature cache and script execution cache sizes to What is this? What is a sigcache? What happens if it is set low and Can it have a bad effect?
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1 vote
1 answer
63 views

Is it feasible to calculate EC private key k from public key K for very low values of k?

If an EC private key k is very small, say "1", is it feasible to calculate the private key k from its public key K, since there would only be one step back to generator point G and therefore ...
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  • 33
0 votes
0 answers
24 views

Is it legal in the US to incorporate in a different state to trade cryptocurrencies?

I know this isn't specific to Bitcoin but I thought this community would know best. I live in New York where there are stringent rules about crypto trading. I did a survey of 44 exchanges last weekend ...
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0 votes
1 answer
46 views

Is it correct to refer to hashes found through proof of work as "proof of work numbers"?

I've seen come commentators refer to 'proof of work numbers'. I suppose these are the hashes found through proof of work, but not entirely sure. EDIT** Regarding where I got the 'proof of work numbers'...
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0 votes
1 answer
44 views

What stage of the bitcoin protocol deals (or 'solves') the double-spend problem?

I understand that a key innovation in bitcoin is that it solves a key problem faced by previous attempts at a digital currency: the double-spend problem. In addition, I also understand that the ...
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0 votes
0 answers
7 views

How can I get an unconfirmed transaction confirmed? [duplicate]

I made a transaction and it's been sitting there unconfirmed for 2 days. How do I cancell and resubmit?
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1 vote
1 answer
45 views

How does a node get information from the TxID?

If I'm right, segwit TxIDs are composed of the SHA^2(256) hash of the non-segwit data of a transaction. But, how does another node use the TxID to obtain information about the transaction such as the ...
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  • 113
0 votes
0 answers
30 views

Create transaction without importing wallet using python bitcoinlib

I am trying to find a way to send bitcoins from one address to another, having only private key, without importing any wallets, just simply get txins, create a transaction and send it to some address. ...
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  • 101
0 votes
1 answer
35 views

Transactions with invalid or non-parseable Script

During parsing of Bitcoin data from blockchain, I found many transactions which has invalid script (example 37b828de0da38f0b3b9ec09f6f8b7883c3202a99a285b0b0087f19f9cbf526d9,...
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  • 29
1 vote
0 answers
20 views

What is the reason for unusual stuck bitcoin transaction?

I have my bitcoin wallet and there is the following situation: There is a strange transaction with 200+ inputs to the wallet A which I don't know (with low amount and very low fee). These ...
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1 vote
1 answer
69 views

How to build a simple Bitcoin Wallet

I am looking for a way to build a Bitcoin wallet native mobile application for iOS & Android. I want the app to offer the following features to its users; Create a new wallet (self custodial) ...
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0 votes
1 answer
85 views

What are the parts of a Bitcoin transaction in segwit format?

I know that pre-segwit transactions looked like the following (This is the hash of the transaction in block 170 - the 10000 bitcoin pizza exchange): ...
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  • 113
-1 votes
1 answer
18 views

Hashage invalide

Après une demande de retrait de btc sur mon adresse de portefeuille L adresse de hashage n'est pas valide. Je n'ai pas reçu les btc. Que se passe t' il quand le hash n'est pas valide? Google ...
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  • 1
1 vote
1 answer
24 views

How does the block searching by txid works?

Is that the process will go through all the blocks and find the block which contains the txid or there's an index table for all transactions?
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0 votes
1 answer
36 views

Imported Address

I had some btc in a hardware and I transferred to my new blockchain account. But now it shows in a imported address. Do I have access from my blockchain? Can I sell, exchange … or watch only?
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  • 1
2 votes
1 answer
38 views

What happens if channel opening transactions get stuck?

What happens with a pending channel opening, if the transaction is not being confirmed for an extended period of time because of insufficient on-chain fees? Or even worse, if the transaction drops out ...
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0 votes
1 answer
22 views

Was the "sideloaded" data verified by bitcoind during the value overflow bug?

As a response to the overflow bug 2010, Satoshi wrote this post asking people to download the blockchain (blk****.dat and blkindex.dat) from a specific user. Patch is uploaded to SVN rev 132! For now,...
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0 votes
1 answer
26 views

Command lnd not found even after installing lnd

I tried installing lnd using the commands shown in the installation guide. I used these commands: git clone https://github.com/lightningnetwork/lnd cd lnd make install but when I try running the lnd ...
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-2 votes
1 answer
47 views

How long does it take to get bitcoin trough Twitter

My friend @JayeCane , that's his Twitter nickname also, sent me BTC through Twitter at my address : bc1qhl8ajxff5z4zmmsshsnz98m3x7r2lupsuvfjeq before 4 day's ago. I have to wait or something went ...
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3 votes
0 answers
25 views

Problems with multiple wallets on RPC in bitcoin-core

I have been playing around a bit with Bitcoin Core (version 23.0), more specifically connecting to different wallets in Bitcoin Core through RPC in Python. I have found this library and tried to ...
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1 vote
0 answers
31 views

WitnessPubKeyHash to address

I'm trying to derive address from pubkeyhash in GoLang. Current i'm getting invalid address Current i'm getting SegWit address but mine chain doesn't support Segwit. addr, err := btcutil....
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