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How to transfer unspent Bitcoin Cash from Mycelium to Coinomi? or: How to identify the internal and external addresses which hold unspent output and transfer/sweep the funds to another wallet? or: How can i get hold of my Bitcoin Cash? Be sure you know what you are doing with your private keys ;) Recommendation: Transfer your BTC funds from Mycelium to ...


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General answer is running: $ electrum --testnet If you are using Mac OSX then open terminal an jump to: /Aplications/Electrum/Contents/OSX there you need to run: & ./Electrum --testnet


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If you install Electrum on Windows, you will have two programs you can start. One of them is called "Electrum Testnet".


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I can't speak for the coinomi app importing an extended key, but if you need to extract the private keys from the extended key, you can use http://bip32.org/. I haven't personally audited this site, but I have used it to browse my private keys associated with a Mycelium HD account. Once you have extracted your private extended key from Mycelium however, I'd ...


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You should import all the private keys and not sweep them. Wallets like blockchain.info has this function where it will import the private key. In that case the private key will become part of the new wallet. Import all the private keys into a new wallet. Thats it ! During spending the wallet will combine inputs from your private keys to spend required ...


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You need to Import the keys into a wallet. Send the imported bitcoin to a new address. Here is a way to do it with Bitcoin Core: Make sure the Blockchain is downloaded and fully synced (can take days and requires 100s GB of free space for a fresh install). Open the console by going to Help → Debug window → Console Import all but the last key by typing ...


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Your coins are likely in a change address. You could do a dumpwallet in bitcoin core and then sweep all the private keys. But this is going to be slow going in electrum and you're going to have to do it in batches. Instead I suggest extracting the addresses which have unspent outputs in them by using the listunspent command in bitcoin core and then sweeping ...


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No MVP PHP code, but some bits that could help. verify the private key Assuming you want a private key to be in the secp256k1 ECDSA range. You could check if the key is any number between 0x1 and 0xFFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFE BAAE DCE6 AF48 A03B BFD2 5E8C D036 4140. Take a look in the bitcoin wiki entry to private keys about the key ...


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Run Electrum with the --testnet startup option.


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Redo the import. Start via file > new/restore, enter a unique filename and click next to begin the process. This time prepend one of the following to the private key: p2wpkh: if the address in question begins with bc1 p2wpkh-p2sh: if the address in question begins with 3 For example: p2wpkh-p2sh:Ky9mddDtaqcLC1vv6egmgQpiZh8Lgh111LnJSyJENxJs3oW93bjD You ...


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Update Aug 1, 2021: this answer covers Bitcoin Core <= 0.20.1. For Bitcoin Core >= 0.21.0 using the GUI-integration for PSBTs check the second answer. Yes, it's possible using descriptors and PSBTs. How to spend/sweep p2pkh UTXOs air-gapped using Bitcoin Core's GUI and PSBTs. Here are the required steps, most of them have to be entered into Bitcoin ...


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I have a 7 year old wallet.dat file I guess that predates HD wallets. Which I think means you'll need to sweep all private keys which have money (UTXOs) currently associated with them. For an HD wallet I believe you can probably sweep the Extended Private Masterkey shown at the top of the dumpwallet output. I'm stuck at the step dumpprivkey, because I don'...


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Yes, it's even easier using Bitcoin Core 0.21.0, descriptors and PSBTs. How to spend/sweep p2pkh UTXOs air-gapped using Bitcoin Core's 0.21.0 GUI and PSBTs. Here are the required steps, many of them have to be entered into Bitcoin Core's console. OFFLINE (best to use a laptop booted from a Ubuntu USB-stick and no internet connected) export the descriptor of ...


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There are currently no specifications for interoperable text/file formats between lightning network node implementations. The lightning BOLT specifications deal with standardization of the network protocols so that different lightning implementations can talk to one another, but all other details which are not part of this protocol are left up to the ...


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You can use Bitcoin Wallet (F-Droid, Google Play) to sweep a paper wallet, including its bc1 (Bech32) address.


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Yes you can since USDT is built upon the Bitcoin Blockchain thru a protocol layer known as the Omnilayer. You will still be able to access the USDT within that wallet address so long you have the private key.


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Take a look at the private keys from your Bitcoin Core client. They should look like mine (the following are keys from the testnet): cQHjhLkGQHQZUZFZYHfXjsXkfdNPoAd2X58sa2x95vEWssrvpPLi cVXThnV4XgJP7q1v3aVQacTkxHq96BpyoSCGPqMAyyJcVaGn93Zh cVCAYjR4E5qvzCa3f6VYZhsZNCgWQUDikfFCg4Fom6fnecRXxKM5 Now go to your Electrum and take a look at your keys there (...


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How to import private keys into Bitcoin Core (from a paper wallet or elsewhere) In Bitcoin Core, you can use the importprivatekey command. Once you have your private key, guard it very carefully keeping it very secure and, do the following to import into Bitcoin Core: Open Bitcoin Core. Go to Help --> Debug. Go to the Console tab. type: importprivatekey "{...


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As Bitcoin core v0.16.0 released You can import Bech32 Segwit address as @Willtech Answer. importprivkey "privkey" ( "label" ) ( rescan ) First Make sure that you are running the correct bitcoin core version using getnetworkinfo bitcoin-cli getnetworkinfo { "version": 160000, "subversion": "/Satoshi:0.16.0/", "protocolversion": 70015, "...


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To move your bitcoins just send to a different bitcoin wallet using the send option in mycelium. To get access to your bitcoin cash just restore from your mycelium seed in electron cash. Electron cash is a bitcoin cash fork of electrum so the steps are the same as for electrum. Just make sure you select bip39 in step 4 and in step 5 choose legacy p2pkh as ...


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there should be an export function on mycelium. select the other keys on the left pane and export them. in coinomi, import them (dont sweep, that makes a transaction). in coinomi, the import functiln appears to be under settings -> restore wallet. make sure you dont have anything of value in coinomi before restoring this way.


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Sweeping is just sending all bitcoins to another address. As such, there is a network fee involved. Network fees will come out of the value of the paper wallet. Depending on what you are using for sweeping, you can vary the fees. Though a lower fee will take longer to complete: https://bitcoinfees.21.co/ At the risk of dating this answer, I would ...


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When using sendtoaddress api call, do I have to specify a change address? No, it generates a new key pair and sends the balance to it. This key pair is stored in your wallet.dat file.


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