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Bitcoin Core 0.21.0 Loading PSBT from file gets error: “unable to decode psbt…”

The Bitcoin Core GitHub text says to ask my question here. I also asked on reddit but maybe this is a better place. I created a PSBT file from my online Bitcoin Core wallet. I transferred it to my ...
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1answer
24 views

Mining Bitcoin 1,000 Times More Efficiently than Anyone Else

Bitcoin secures its network by forcing miners to solve a cryptographic puzzle who's difficulty increases based on the total hashing power of the network. If someone were to develop an algorithm that ...
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0answers
23 views

Am I seriously going to have to keep this clunky old infernal machine running for weeks upon weeks to sync the blockchain?

Yesterday, I dug up my old computer, set it up physically, installed Linux Mint with full disk encryption, installed Bitcoin Core through its software manager, started it, immediately selected "...
0
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1answer
19 views

Should I hide my IP address?

I'm currently in the working to set up a Bitcoin node on my raspberry pi. I'm wondering if I should hide my IP address? If so I'm would like to know why just out of curiosity.
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1answer
22 views

Does spy mining negate the harm caused by big blocks on decentralization?

In the question Do larger blocks make it harder for smaller miners to compete? Why? there are some reasons given for why larger blocks hurt smaller pools. Is this still the case with spy mining? Spy ...
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0answers
12 views

How can I generate a database/list of all non-empty bitcoin addresses with their current balance?

After downloading the full blockchain, how can I parse it and generate such a database? Can you point me in the right direction?
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0answers
15 views

How to generate a Emercoin mainnet/testnet/regtest addresses [closed]

I have this settings : const emercoin: NetworkConfig = { mainnet: { messagePrefix: '\x18Emercoin Signed Message:\n', bech32: 'emc', bip32: { public: 0x0488b21e, ...
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1answer
27 views

Why would Bitcoin Core freeze my computer when syncing? And is it supposed to take this long?

24 hours ago, I finally bit the bullet and dug up my old computer, set it up physically, installed Linux Mint (with full disk encryption), installed Bitcoin Core through its software manager, started ...
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0answers
17 views

Mitigating a Double Spend Attack by Punishing the Attacker?

One of the main reasons it's not considered safe to accept Bitcoin with 0 confirmations is due to the possibility of a double spend (where Mr. Scammer first sends 1 BTC to Alice and then creates an ...
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1answer
22 views

Upgrade to 0.21.0 - No incomming connections via Tor after upgrading

I upgraded to 0.21.0 a couple of days ago and noticed I'm no longer getting incoming connections while using Tor as a proxy. Was fine before the upgrade. 'getnetworkinfo' shows "reachable": ...
0
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1answer
24 views

nLocketime error PUSH TRANSACTION ERROR: 64: NON-FINAL

Created nlocktime with electrum and used the time date feature which is using unix time instead of block height number for the locktime. SO when pushing the raw tx before its time I get code 26 ...
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0answers
16 views

Bitcoin RPC - Returning values in bytes, should I display in gibibytes or gigabytes?

I'm using Python and the requests library to get some data from Bitcoin using RPC. For example, from the getblockchaininfo call: "size_on_disk" : n, (numeric) the ...
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0answers
13 views

How are the transactions going to be verified after all BTC blocks are found? [duplicate]

If I understood correctly the current transactions are included in the generation of the next block, thus these transactions get verified. But what happens when all 21 million bitcoins are already ...
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0answers
20 views

Can someone explain the reason for this discrepency in speeds?

Can anyone shed some light on why this is happening? Firmware is reporting 15TH/s but BFGMiner says its only running at 200GH/s
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0answers
26 views

Is John McAfee simply lying in this video from mid-2020? [closed]

https://youtu.be/FnKrMKo_WlU?t=293 He's basically saying that if I send you Bitcoin right now, you can forever know how much Bitcoin I have and who I do business with. He's also saying that Monero is ...
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1answer
35 views

Is it safe to store seed phrases (private keys) in a bank vault?

If written on a piece of paper, would the recovery seed phrase or questions for accessing a collection of web wallets and hardware wallets be safe to keep in a mini vault drawer at the bank? Do bank ...
2
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1answer
71 views

I have been robbed after dust attack

Dear colleagues of the crypto community! I am Roman Frolov (Vader), a private investor and trader, was subjected to a new version of a micropayment attack (dust attack) and was robbed of about 335....
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1answer
26 views

Doesn't storing the “recovery seed phrase” for a wallet defy all logic?

I've heard many times that you are supposed to write down a "recovery seed phrase" (a series of English dictionary words) on a piece of paper and store that securely so that you can recover ...
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0answers
16 views

To what extent is the actual downloading of blockchain data what slows down a “fresh sync”?

I've just sat an old computer with fresh Linux Mint and Bitcoin Core installed to sync from scratch. Since its HDD is 250 GB, I had to enable "pruned mode" since the blockchain is currently ...
0
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1answer
14 views

1 of n Multisig Scriptless Scripts?

I know MuSig makes n of n multisig scriptless. However, can we also aggregate multiple internal public keys in one public key, and unlock funds using either one of the internal public keys?
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1answer
24 views

Why can't a 51% attack change past blocks on the blockchain?

I have read that it is not possible to reverse transactions already added to the blockchain but I do not understand why that is not possible in a 51% attack. If an attacker was to change the ...
1
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0answers
18 views

Is it possible to use BitGo wallet with other software (Electrum or else), what is the used derivation path?

BitGo wallets are based on a 2-of-3 multi-signature, the end user have access to: - Public key (xpub) of the 3rd signer - Native segwit (Bech32, bc1...) address to receive BTC - Private key seed (...
1
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1answer
38 views

Why are there no Bitcoin price/trade records before 2013?

Example: http://www.livebitcoincharts.com/ On that chart, it starts at $135. That's quite a sum to start with. Why does it only start in 2013 when it started "blowing up" for the first time? ...
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0answers
7 views

Pheonix miner Access is denied issue

Ive gotten this error a lot of times and dont know the fix, ive ran it as an admin and it still isnt working. any help? C:\Windows\system32>REM Example bat file for starting PhoenixMiner.exe to ...
0
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1answer
26 views

How to secure a blockchain based on PoW against 51% attack?

I couldn't find a satisfying answer to this 51% attack issue, so for a new blockchain with only 300 mined blocks, from my understanding the attacker has to rebuild all the blocks from scratch, is that ...
0
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1answer
36 views

Safely Accept Bitcoin Payments with 0 Confirmations

GAP600 is a service (that has processed $5 billion in cryptocurrency) which allows exchanges and payment service providers to process Bitcoin payments instantly (0 confirmation trx). It guarantees a ...
0
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0answers
8 views

Help with director path for Bitcore on an external drive using MacOS

Can someone tell me what the name of the last file name in this chain supposed to be? Is it the bitcoin folder that has everything in it? i.e blocks, database, confit files etc. Or is it just a single ...
1
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0answers
37 views

Compiling Bitcoin Core v0.10.0 on Ubuntu 20.04

I'm trying to compile Bitcoin Core v0.10.0 on Ubuntu 20.04, but then I get the following error: rpcserver.cpp: In function ‘void StartRPCThreads()’: rpcserver.cpp:594:77: error: no matching function ...
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0answers
19 views

How can i solo mine with antminer? Using local bitcoin core

I am having trouble setting up mining with antminer. I have a gpu rig which is successfully mining with 2060 rtx on bitcoin with bfgminer at a hashrate of 1.5gh/s Obviously 1.5gh/s is nothing compared ...
0
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2answers
30 views

Can a Bitcoin address be traceable to a crypto exchange?

If a Bitcoin address was created upon the opening of a Binance or Coinbase account, is there anything in the address itself, or its activity, that can give clues to whether it was in fact created on ...
0
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0answers
7 views

Is there anyways to get the historical data of bitcoin price in dollar on Simplex?

Is there a way e.g. API which would allow me to obtain the historical time series of price of BTC in dollar on Simplex (including open, close, high, low if possible)?
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2answers
55 views

Can i sell bitcoin worth Five Million Dollars or more and how can i?

I bought 200 bitcoin in the year 2012 and i've come to the point where i feel i need to withdraw some of it.... But i'm having some difficulty doing that. How can i withdraw a large sum of bitcoin and ...
0
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0answers
14 views

What should i do with my used antminer? How should i set it up?

ive just purchased a 2nd hand s9i antminer, got it for £200, a great deal i thought, what tasks should i perform before installing? i was thinking of opening it up and looking inside, just to see what ...
0
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0answers
42 views

Inherited bitcoin. Want to sell. Have wallet.dat . Please help

Inherited bitcoin. Want to sell. Have wallet.dat on my computer. How to sell the bitcoin in the wallet? Do I need a passcode ?
0
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1answer
18 views

What is the practical link between the hashing power in the bitcoin network and its security?

Several books claim that as the hashing/computing power increases, the bitcoin network is securer. How can a non-techie sees that from a practical standpoint?
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0answers
13 views

Transfer USD to INR from Bank A to Bank B : Ripple API [closed]

I am trying to use RippleAPIs to transfer USD to INR from Bank A to Bank B. Here are detailed steps: Created two addresses, and added 100 XRP each, so account got activated. Setup trustline between ...
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3answers
28 views

Do hardware wallets store the wallet.dat redundantly inside? If not, are there such hardware wallets?

I'm baffled by how "cheap" the existing hardware wallets look and seem. They seem to have been made "at a budget", with no real high-end version available. If I owned something ...
1
vote
1answer
26 views

Developers, programmers new to bitcoin engineering ecosystem

Any sites, forums dedicated to developers new to bitcoin. Any recommended git repo, site that shows how to interact with a node, do .i.e. p2sh,p2pkh on testnet.
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3answers
52 views

What is the most optimal Bitcoin Core-only OS for securing a new Bitcoin wallet?

I can't sleep at night due to my unencrypted cold storage wallet.dat having frequent contact with my Windows 10 nightmare machine. I've therefore decided to set up an old computer (with a 250 GB HDD, ...
0
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1answer
48 views

bitcoin feeless transactions

The mobile application cashapp specifically says I can send bitcoin to any address anywhere in the world for free. Coinbase also says they can do off the network transactions instantly and for free as ...
0
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1answer
48 views

can not access bitcoin in an address that belongs to a discontinued wallet, although i have the 12 word phrase?

I am still a Rookie regarding bitcoins and therefore apologize beforehand if I might use some words wrong. I started a bitcoin wallet through a provider some years ago and bought some bitcoin. The ...
0
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1answer
17 views

Random Number In R Value , what is it actually, is it the same as Nonce in the blocks

I wonder about the random number in R value ... if i am right , the R value is First part of the script signature which is combined of two parts (r,s) r = Gk (elliptic curve scalar multiplication) Or ...
3
votes
1answer
27 views

How do light clients using compact block filters get relevant unconfirmed transactions?

I was discussing various light client models and we got into unconfirmed transactions. With the BIP37-based bloom filters, a light client would subscribe to updates from full node peers by submitting ...
0
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1answer
17 views

How New Bitcoin Addresses not using Signature ? Only witness or Very Short Signature?

I have Noticed Something strange to me Newly Used Bitcoin Addresses show repeated very short Signatures and Multiple Witness ?? and Some not even any signature for the transaction ? what is happening ...
0
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1answer
16 views

How to create descriptor watch-only wallet with bitcoin-cli in Bitcoin Core 0.21?

Using only command line (no GUI), how can I create watch only wallet based on descriptor and get first unused address? This is the descriptor: "wpkh([00000000/84h/0h/0h]xpub6DP....xyz/0/*)#...
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3answers
2k views

Is bitcoin.org or bitcoincore.org the one to trust?

"Download Bitcoin Core": https://bitcoin.org/en/download "Download Bitcoin Core": https://bitcoincore.org/en/download/ I've been alternating between the two sites for years. I have ...
0
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1answer
23 views

Hidden fees in a transaction: How to anticipate one and avoid another?

On Bitcoin.org, the page on getting started has a button for "Buy Bitcoin". It links to page with a dialog box that appears to be an interface to the service, MoonPay. MoonPay has a page, &...
0
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2answers
32 views

Were anyone-can-spend transactions valid before SegWit?

Non-segwit nodes (legacy nodes) see segwit transactions as anyone-can-spend (ACS) transactions. It is clear that such a nodes can (and do) validate blocks containing ACS transactions, because the ...
0
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1answer
26 views

How many times a single transaction can be included into different blocks?

I would like to know is there a limit after which a miner cannot include a transaction into his block.
0
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2answers
39 views

Is this the ledger?

Lots of articles about bitcoin say that anyone can see all the transactions that have ever taken place, and they call that "the ledger." But none of those articles give a link for where to ...

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