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Bitcoin Cryptocurrency Development

Delete a specific private key from an Electrum 3.3.8 wallet via the command line?

I imported a few private keys into my electrum wallet via the command line. Now I want to delete these specific private keys from electrum 3.3.8 – What is the command to delete these keys from my wallet?

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Cryptocurrency Development Ethereum

Where to find Court Decisions where Etherum Blockchain was used to determine a verdict

Where can I find actual cases where Blockchain (particularly Etheru Blockchain) was used in a case, or better yet, decided the verdict of a case. So far, I searched findlaw.com, and I get articles on the promise of Blockchain.

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Bitcoin Cryptocurrency Development

Is Wallet softwares safe? then how verify?

Some day, I thought that there are may fraud wallet to steal bitcoin. It is really very achieved as following: User should make a keypair at first time. at this time, wallet software can send keypair to operator’s server, but user doesn’t know absolutely about this situation unless they capture network packets using Wireshark between […]

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Cryptocurrency Development Ethereum

Reference library in external contract

Say contract A {} uses function from library Math {}, can it reference the library from an external contract, and if yes how?

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Bitcoin Cryptocurrency Development

Is RIMarket bitcoin brokers

I am trying to get bitcoin from RIMarkets but they are asking for my copy of passport, utility bill, bank statement and they had the copy of my visa card and my signature. Is this normal, should i trust them to give the copies to open an account with them. I don’t know anything about […]

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Cryptocurrency Development Ethereum

What is the client version?

I am using Infura and web3.py. When I connect to Infura the web3 object has a clientVersion property that reads this from JSON RPC “Geth/v1.8.15-omnibus-255989da/linux-amd64/go1.10.1” Can someone explain to me what this client is and what the version number represents? Would the version number be the same for everyone connecting to Ethereum via Infura? Ty!

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Cryptocurrency Development Ethereum

Error trying to get events in web3.py via Infura

I was trying to get all events from my smart contract (in Ropsten) via Infura node. The problem is that I know that Infura does no support creating filters, but I dont know how to get events by other way. This is my method: def tx_resource_smart_contract_history(): contract = wb3.eth.contract( address=config.audablok_contract_address, abi=get_abi_audablok() ) event_filter = contract.events.SmartContractInfoEvent.createFilter(fromBlock=’latest’) […]

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Bitcoin Cryptocurrency Development

I want to send Bitcoin to a wallet. That wallet is to receive the bitcoin at a future date

As the title says I want to send Bitcoin to a wallet. That wallet is to receive the bitcoin at a future date. Basically I’d like to hodl some of my Bitcoin to be paid to my Children far into the future. Is this possible?

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Bitcoin Cryptocurrency Development

Exchange or straight to gamble providers?

Do you exchange currencies first or go to casinos and do it there. Is there a differene?)

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Bitcoin Cryptocurrency Development

Why does it make sense for mining pools to send empty blocks to miners in Stratum v1?

I am reading the recently released specs of Stratum v1 versus Stratum v2. One of the features is that “it is equally as efficient for pools to send full blocks for miners to begin working on as it is for them to send empty blocks “. I don’t understand why it is efficient for mining […]