Cryptocurrency Expert

How to transfer bitcoin to Electrum wallet anonymously I'm using Electrum with Tor proxy, i will receive bitcoins from another wallet that i used to buy bitcoins using my ID. Is it safe? The server that host my wallet on electrum will know that i got these bitcoins from "another wallet"? If so, what can i do about? I don't want to be associated with the Wallet that i used to buy bitcoins using my ID. I'm thinking about do it: Wallet used to buy bitcoins -> bitcoin mixer -> A random Web wallet -> bitcoin mixer -> Electrum wallet. https://ift.tt/2Vz3xGN

Uniquely identifying a UTXO I see two ways: Txid + index Txid + script hash Pros of the txid + index : Simple and short Cons of txid + index : It relies on array iteration being deterministic and all third party services using the same iteration method. Txid + script hash does not rely on iteration order and since script hashes are stored on the blockchain they are not malleable after 6 confirmations. Which would be the preferred way to go? https://ift.tt/2tNe9WJ

Blockchain will Stop Fraud: Falciani Creates his Own Crypto Frenchman whistleblower Hervé Falciani, the ex-mole of tax evaders, officially presented his blockchain-based project aiming to fight fraud and money laundering. The former UBS senior system engineer, who published the 'top secret' list of tax evaders that had financial accounts at the branches of the Swiss bank in the 2008 Valencia Polytechnic University bang, went in exile in the city of Madrid, Spain. Falciani became famous as the HSBC former employee. https://ift.tt/2EGqp1f

A Smartphone to Earn its Owner € 250 Worth of Crypto Monthly In the world of smartphones, we thought we had seen it all, particularly after the arrival of folding smartphones, but the Mobile World Congress (MWC) taking place in Barcelona, Spain, gives us another innovation to discuss: the first smartphone in the world which earns crypto just by keeping it on. https://ift.tt/2UhKdNU

What can 1 master public key in a multisig reveal? Assume you have the following situation: You are going to create a new multisig wallet with Electrum. 2 signatures are from old hardware wallets and 1 signature is brand new. The new multisig will only be used with Electrum and Electrum personal server connected to Bitcoin Core. The 2 old signatures from the hardware wallets has been used with the hardware wallets own wallets (like Ledger Live and Trezor Wallet). Then I guess we can assume that the master public keys from those 2 wallets has been uploaded to some server somewhere and could be "leaked". From a privacy standpoint, if I create a new multisig, is it possible to get any information from the 2 old master public keys? Or, do you need all 3 keys? Would it be a good practice to create two new master public keys (by "reinstalling" the old hardware wallets) and create a new multisig with 3 brand new keys (and treat them with more care in the future)? Or is ...

If a bitcoin wallet service provider terminates a users account, what happens to the funds? A friend of mine has/had a bitcoin wallet service provided by an online marketplace. Sounds like he had some kind of disagreement with the site administrators and they terminated his account. At that time, he still had some BTC in the wallet. Not a lot (about $50.00 USD or so), but still. Is there any way to recover the funds, or are we all at the mercy of our wallet service providers in that respect? Seeing as all transactions are recorded in the ledger, I figured perhaps there's some way to claim/prove/declare ownership. It seems pretty thin, but surely there's some kind of safeguard in place, otherwise wallet service providers could exploit that trust and just terminate all their customers accounts and take all their funds with impunity at any moment. Right? https://ift.tt/2EHpzSb

Generating first block after genesis block in PoS altcoin I'm currently developing a test altcoin in educational purposes, and can't for some reason generate first pow blocks after generating genesis block. Couple of years ago i successfully made workable fork of fork of dash (or something similar with terribly outdated codebase), but I'm totally unable to reproduce it with modern codebase. So, to the point. I used PIVX repo, changed chainparams.cpp accordingly: removed old checkpoints; generated new keys; updated ports all over the codebase; changed pchMessageStart numbers; updated unixtime; changed coin name all over the codebase; generated genesis (and it was correct, i checked it many times); compiled it; launched coind; launched cpuminer, and it failed with the following in log: 2019-02-28 16:55:09 ERROR: CheckProofOfWork() : hash doesn't match nBits 2019-02-28 16:55:09 ERROR: CheckBlockHeader() : proof of work failed 2019-02-28 16:55:09 ERROR: Chec...