Linked Questions

81
votes
2answers
18k views

Comparison of the different TestNets

The Metamask client allows access to three test networks: Ropsten Kovan Rinkeby I'm curious: What are the similarities / differences between them? Which use cases are best for each network Are ...
17
votes
1answer
5k views

The meaning/specification of “config” in genesis.json

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" "...
5
votes
1answer
2k views

What are the IDs for the various Ethereum chains?

I'm looking to find the chain ID's for each network (homestead, etc.). I believe the v-value of signatures is associated with these to some extent. I'm also under the impression that the ropsten ID ...
5
votes
2answers
993 views

Does ETH and ETC uses the same network ID?

Can someone tell me what happen after the hardfork (due to DAO attack)? There are 2 ethereum cryptos after the fork, so there should be 2 different network. Are they using the same network ID? How do ...
2
votes
1answer
4k views

What is chainID? Raw transaction from myEther wallet

So I just ran a function from a contract on Ropsten from myetherwallet.com. It ran fine via metamask, but I was just wondering what chainID was in the rawTx file? { "nonce":"0x2e", "gasPrice":"...
2
votes
2answers
2k views

Need help signing a raw transaction with “ethereumjs-tx”

Here's a NodeJS script where I'm trying to send a raw transaction. I've tried changing params in a lot of different ways and always get the same error. What am I missing? I'm following an example from ...
2
votes
2answers
530 views

error sending signedTransaction, Error: Transaction has been reverted by the EVM:

I have an error after I send signedTransaction always return error node: (node:16924) UnhandledPromiseRejectionWarning: Error: Transaction has been reverted by the EVM: { "blockHash": ........ ...
2
votes
1answer
276 views

Does transaction have network id?

According to this post, every Ethereum wallet has a number called network id. Does every transaction have this network id? If not, then it should be possible to replay transaction on multiple ...
1
vote
2answers
350 views

How can I simply sign an Ethereum transaction?

I want to use blockcypher to work with the Ethereum network. In the documentation they give an example of a signer tool written on Go, but I'm use Python. What is the simplest way to sign a ...
0
votes
1answer
277 views

How to deploy a smart contract using Infura and web3js@1.x.x on NodeJS?

I have an application written in NodeJS that each time it starts has to deploy a smart contract. Once the contract is deployed this application will interact with it making some transactions and ...
2
votes
1answer
161 views

eth.blockNumber does not match any network's current block

I set up a geth full node on Rinkeby with the following command: /usr/bin/geth --syncmode fast --nousb --cache 3072 --trie-cache-gens 1024 --rpc --rpcaddr 127.0.0.1 --rpcport 8545 --networkid 4 2>&...
0
votes
0answers
62 views

UnhandledPromiseRejectionWarning: AssertionError [ERR_ASSERTION]: The field to must have byte length of 20

I'm encountering a problem that I'm not able to solve. The code should launch a configured transaction with the details object. The current configuration is set to Ropsten and I am using the INFURA ...
1
vote
1answer
58 views

geth node on ubuntu setup question

To run a node on my vps, --rpccorsdomain "mydomain.com" and set maxconnection, can be set at the same time so that only my own website can send rpc call for security, also I use max connection to ...
1
vote
1answer
41 views

Most stable / reliable testnet

I hope this question isn't too vague, but it would really help me to get some advice on from the community on this subject. Which testnet is the most suitable for testing of a dapp? Do testnet ...