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Ethereum

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How much more it will take for Ethereum wallet to Sync - 2019

I has been a week when I tried to Sync Ethereum on SSD VPS. Here are the details - Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): ...
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25 views

Who confirms Ropsten and Rinkeby transactions?

Basic or more like "fundamental" question I guess: So if I got that right, each time someone runs Geth/Parity or other software they all become part of the EVM (ethereum virtual machine). However ...
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1answer
25 views

Crowdsale contract working properly on all testnets but not on mainnet

I never across on this kind'f problem. I have deployed a contract on testnet (rinkeby, ropsten and TESTRPC). My contract is working fine here. But than the same contract is deployed on mainnet and now ...
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13 views

Is QTUM is a coin or a Token?

According to Etherscan Qtum is a Token, holding supply with verified smart contract. But its official site contains its own protocol and integration mechanism. Is it still a token under ETH or it has ...
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27 views

Truffle test including mainnet contract - Error: Cannot create instance of Whitelist; no code at address

Problem with the error Error: Cannot create instance of Whitelist; no code at address 0x6198149b79AFE8114dc07b46A01d94a6af304ED9 How do I have to setup truffle so that I can run a test which includes ...
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31 views

Truffle how to test with reference to mainnet smart contract - Error: while migrating VM Exception while processing transaction: revert

I would like to run a truffle test on a smart contract that includes a smart contract address deployed on mainnet. However, this results in the following error Error: Error: Error: while migrating ...
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407 views

web3.eth.getBlock returns null

I have a very similar problem as https://github.com/paritytech/parity-ethereum/issues/8788 When I use web3.eth.getBlock for the first 1 million and latest 50,000 blocks (approximately), I get the ...