Linked Questions

I am trying to run a function with Remix web compiler on a contract in my private chain. Here is my contract and I am trying to run the function changeVaccinHistory: contract PatientObjects { ...

Looking at the output of https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getblockbyhash Does anyone know what do the "mixHash" and "extraData" field mean? and what is the Unit of gasLimit and ...

As I tried to search from Google, there are some genesis.json example files to customize the parameter of genesis block in Ethereum private blockchain. In the file, there is a part called "config" "...

In geth 1.5 the --genesis option has been removed. What do I use instead to add ether to my account?

I admit that I don't understand Gas at all. But I think it is basically the currency which dapps use to interact with each other and the blockchain. Yes? If you're creating a custom/private network,...

Here's a snippet of Geth's Ropsten genesis: "config": { "chainId": 3, "homesteadBlock":0, "eip150Block":0, "eip155Block":10, "eip158Block":10, "eip160Block":10 } ...

I understand the Ropsten testnet was partly necessary because of some broken replay-protection measures on Morden. So what's different for Ropsten? Is the nonce simply incremented by a smaller ...

I would have thought that these are the upper and lower bounds of how much gas can be used in any one transaction. But the mainnet file has the same value for each of these. Can someone explain what ...

I am trying to save some data into a block. The extraData field has a constant value since block 1. Also where does the data parameter of sendTransaction() function get stored?

I may not fully understand the genesis file. Why is there a nonce and mixHash value in the file if nothing is being mined? It was my impression the genesis file is used to bootstrap block 0, then ...

I have a private blockchain using PoA and would like to store data in the data field of a transaction. To my understanding, the data field has a 32-byte limit and needs to be hex encoded. Is this ...

I would like, just for learning purpose how to create a new crypto by cloning the Ethereum. I know how to make a clone of BTC and LTC, basically with that chains is enough modify some strings (such ...

I am having a hugely difficult time understanding the genesis.json file. Assumption: it seems to me that it serves to both initialize the first block, and also set configuration parameters for the ...

At first thought that running a private network with Ethereum is going to be easy. Just download the source, modify your difficulty function and you are done. But after getting deeper into the source ...

I am trying to initializing geth node with the following Gensis file content { "nonce": "0x00000000000000042", "timestamp": "0x0", "parentHash": "...