In some cases you can generate your own 12 or 24-word seed phrase using open-source software on an isolated computer and use that phrase in the hardware devices recovery mode.
The recovery phrase to restore private keys from. BIP39/BIP44 recovery phrases are supported.
You should also, with some work, be able to independently verify that ...
I already have bitcoind running with a 4GB pruned database, and I'm hoping that will be enough.
It is! By running bitcoin-core, you can pull this data in an easy, trustless way.
I would recommend creating and displaying a new address to your patrons each time a new donation is received (so as to avoid address reuse, which is detrimental to your privacy, and ...
Do you want the balance shown to be specific to the user viewing the page, or the total balance contributed from all users?
The former requires more work, the latter is trivially simple.
You can use something like the blockstream API, called via cURL in PHP
"chain_stats" contains information for ...
If it was between 2010-2011, it must have been MtGox [dead], Britcoin [dead], Bitmarket [dead], Bitstamp [alive], Kraken [alive]. If she's lucky, she used Bitstamp or Kraken.
She stored the BTC on the exchange or did she ever transfer any to a wallet?
If you know the company or individual who owns the domain her email was registered on, I'm sure they'd be ...
You could export the private keys from all the wallets you wish to send from, save them to a file. (Wallet->Private keys->Export (to .csv) , open in Excel and copy the private_key column to a new file)
Build a new wallet with imported private keys on Electrum (File->New/Restore->[+] Import Bitcoin Addresses or private keys)
The new wallet would ...
Open in a hex editor search for name, might say team doge or some other thing that will be simple and if you are not on linux getting python and a few plugins working just to figure out what coin is the wallet.dat is a pain. Although if you need to extract a key or try to fix it you will want python and some other tools.
There is a hex editor plugin for ...
@Users is correct. There is no public key provided by bitaddress.org... In what situation would we need our public key if we are learning to use paper wallets and need to eventually interface with the network via hardware wallet or software/hot wallet?
if the hardware wallet company ledger goes out of business, what will happen to my crypto asset / private keys in ledger?
It's difficult to answer about other cryptocurrencies and security of each. This website is for Bitcoin and you should be fine even if hardware wallet company like ledger goes out of business because they don't have access to your ...
Developers of reputable wallets use a suitable source of randomness and will generate a key in the whole range available, not restricted to some arbitrary small range.
So far as I know there is no standard (e.g. BIP) that specifies this. It is assumed knowledge.
For example see https://www.freecodecamp.org/news/how-to-generate-your-very-own-bitcoin-private-...
Your keys are stored securely on the hardware device itself.
If Ledger (or Trezor) goes out of business then their wallet client will also most likely not be supported anymore.
This isn’t that much of an issue. Other wallets have support for interacting with your hardware wallet, like Electrum for BTC, Electron Cash for BCH, and MyEtherWallet’s website for ...
ViaBTC's Transaction Accelerator service can be used and you can pay with BTC but it will cost $100 or more.
You can wait for your transaction to be confirmed by Monday or you could have tried to spend unconfirmed UTXO if it was not cash app and some non custodial bitcoin wallet by following the below steps :
Generate a new Bitcoin address in wallet.
So it looks like your transaction does not have RBF (Replace-by-Fee) enabled, so you won't be able to bump your fee in a replacement transaction.
And there's no change output, so it seems you sent all your money in one go, so you wouldn't be able to do a CPFP (Child-Pays-for-Parent) transaction.
One suggestion is to use ViaBTC's Transaction Accelerator ...
I have my 12 word phrase committed to memory. Like the Winter Soldier. Whenever I am experimenting with a new wallet service (to see if i prefer a different user experience) I restore my portfolio using the same 12-phrase. There is a bit of a risk in that if you get hacked on one, you get hacked on all, but the “wallet” just lets you facilitate/access your ...
All wallet software that I know of has migrated from JBOK to some form of deterministically derived keys. The first wallet with deterministic key derivation that I know was Armory around 2011-2012, and its scheme inspired BIP32, which formed the basis of many key generation standards that followed. Obviously, software that predates these schemes did use JBOK ...
Are there any circumstances under which the wallet would behave like this?
If your passphrase contains non-ASCII characters, then you could have an encoding issue. I would try typing in the pass-phrase rather than cutting it out of Notepad and pasting it.
Unicode has multiple normalisation forms and this is another thing that could theoretically trip up ...
For anyone else doing this type of migration, the procedure I did was :
bitcoin-cli listaccounts //to get amounts of all balances on each account
copy old wallet to newer version node
bitcoind -upgradewallet //to upgrade wallet to newest version
This procedure preserves all keys, addresses and makes account a label so now when you enter ...
According to https://en.bitcoin.it/wiki/Private_key
any 256-bit number from 0x1 to 0xFFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFE BAAE DCE6 AF48 A03B BFD2 5E8C D036 4140 is a valid private key.
So if someone generates a private key using the usual random process, and then you generate a private key using a random process there is one chance in 0xFFFF FFFF FFFF ...
From what I have read, when you upgrade Bitcoin core, the accounts will become labels. If my understanding is correct. addresses previously associated with an account will now be associated with a label with the same name.
You will not be able to ask Bitcoin core to compute a balance for a label. The accounts feature had some significant problems and was ...
Is a bitcoin wallets balance calculated on the client computer app? eg. Leger Live
How is bitcoin wallet balance calculated cryptographically?
There's no cryptography involved, certainly no encryption.
You add the credits and subtract the debits.
Does Ledger Live app check/compare each transaction+hash & transaction+signature hash like mempool ...
I have seen people say that you just need the private key and "some software" to recover your bitcoin. What does this actually mean in the real world? Can someone give an example?
What it means is that your funds are secured cryptographically, and not on a server somewhere.
If you lose your private key(s) there's no customer service rep that can ...
If the computer that stores the bitcoin is destroyed, how does someone access their bitcoin?
Buy a new computer, download and install almost any wallet program, then either restore a backup of their wallet data file or key in their secret number or key in a phrase of typically 12 or 24 words that is turned into their secret number.
I have seen people say ...
When Alice pays Bob, she creates a Bitcoin transaction. Her payment to Bob is defined in an output of the transaction. This output is encumbered with a cryptographic challenge tied to Bob's public key. You can think of this as the funds getting stored in a lockbox addressed to Bob. When Alice's transaction gets confirmed, it gets recorded in the Bitcoin ...
You have to know the private key. That's it, that's always it. If the private key was never dumped, that is recorded in some way, or the wallet.dat file not copied somewhere else (the wallet file contains the private keys), it's over. The coins are gone.
Is it possible to do this in PHP?
So far as Bitcoin is concerned, I believe it is probably possible.
For example, by looking at https://en.bitcoin.it/wiki/PHP_developer_intro I can see
The easiest way to get started is to run Bitcoin in daemon mode with which PHP communicates via local HTTP requests. A library called JSON-RPC is used to call the various ...
it says spent and what does that mean
It typically means money was received in one transaction and later spent in a second, separate transaction. It is a historical record. You no longer have that money.
It did not arrive to the wallet i sent it too!
It may be due to one of ...
The transaction fee was too low and you need to be patient.
Your receiving ...
This is what safe deposit boxes are for. Write your passphrase on a piece of paper and put it in a safe deposit box at a bank that will allow only you (with proper identification) to access the safe deposit box, until you die, whereupon access will be available to whoever you've designated through proper legal documents.
If you are worried that some bank ...
Not sure if I got your question right.
If you pay to the same address multiple times that is address reuse. Even if you never spend from that address. But if you don't spend from that address the issue would "only" be privacy related not security related.
When you spend from an address the ECDSA public key becomes publicly known. As far as I know ...
With the seed phrase exposed, your funds are likely to be stolen since majority of the wallets implement BIP-39 (which standardize seed words generation). With the exception of Electrum, it would be easy, possibly import attempts in less than five wallets, for someone to transfer the funds.
To quote a section on wallets and seed words (mnemonic words) in ...
"Buy the dip" is used by traders even for legacy markets and nothing specific for Bitcoin.
This will undoubtedly incur high network fees
For paying less in fees while moving bitcoin from/to exchange do the following:
Use P2P exchanges: Bisq and HodlHodl
Use open source bitcoin wallets with active development and support for segwit
Use RBF for ...
I tried Cloud Minning recently
Cloud mining services are scams generally
Are there any legitimate cloud mining services?
Is a cloud mining subscription worth it?
Cloud mining questions
I accidentally press the change address button, will my account still able to receive Bitcoin?
Yes. Addresses can receive multiple payments. Addresses never expire.
There is many wallets outhere, some of them open source that you could even compile and run into your device so you can audit the code if you don't want to trust the manufacturer.
My advice use the one you think or see works good (in my case https://blockstream.com/green/)
With the care you are proposing right now, having only what would spend.
I like to ...