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Unanswered Questions

16,820 questions with no upvoted or accepted answers
25 votes
2 answers
1k views

E/Go: fatal error: thread exhaustion

I am experimenting with the geth-android library with light-client and in-process node from @karalabe. I could successfully sync with the testnet node from @phonikg, unfortunately this one is down now....
15 votes
1 answer
1k views

Trying to compile example code from pyethapp tutorial

I am trying to follow this example: https://github.com/ethereum/pyethapp/wiki/The_Console However, at the point where I should compile the code, I get an error: In [34]: print c contract NameReg{ ...
9 votes
0 answers
4k views

SushiSwap - Inner workings?

I've been trying out in the past few days SushiSwap and lately SashimiSwap Contracts & Frontend and while I'm still getting familiar with the code. It turned out to be quite a challenge to make it ...
9 votes
1 answer
459 views

Remix debugger ignores breakpoint

Description of issue I'm trying to debug a simple contract using remix on chrome v. 65 on Ubuntu. I must be doing something wrong, because I have the following issue: When I place a breakpoint in ...
9 votes
1 answer
2k views

How to use Nodejs/LevelUp to read Blocks from local LevelDb database files (.ldb)?

Here's what I've been able to get going to far. I can open the blockchain database but I can't seem to create a valid blockchain object (nor call the blockchain.getBlock() function successfully). I'...
9 votes
1 answer
2k views

getting started with geth and ENS commands: Error: invalid address

I'm starting from square zero, sorry. I'm just trying to get a javascript console up and running so that I can learn more about ENS: http://docs.ens.domains/en/latest/userguide.html#resolving I've ...
9 votes
1 answer
641 views

Installing go-ethereum nodes using docker swarm?

Has anybody installed and configured go-ethereum nodes using dockerswarm ? Appreciate if anybody could share any docs or relevant information.
9 votes
0 answers
418 views

testrpc 2.0.0 - cannot find module 'memdown'

Trying to get testrpc (2.0.0) working on an ubuntu virtualbox, and getting this error when I run it: mowliv@u4:~$ testrpc module.js:341 throw err; ^ Error: Cannot find module 'memdown' ...
9 votes
1 answer
2k views

Merkle tree whitelisting

Ive been trying to whitelist huge amount of addresses with merkle tree. Here is my json: [ "0xb860BA0E67C8......5ca4b4720d49F549AE8faA", "0xaF019d749865.......f044C1A534e1eC9F0D353"...
9 votes
3 answers
446 views

Error importing transaction: Transaction(InvalidChainId) in Private POA

Problem I am trying to send some transactions to my private chain, and all transactions are getting failed. I am receiving this error: Error importing transaction: Transaction(InvalidChainId) ...
8 votes
1 answer
2k views

hardhat remappings option in configs

I know that solc can take remappings but I'm trying to force hardhat to take in my remappings.txt file each time it is compile. I've looked for a while and can't seem to find anything about that on ...
8 votes
1 answer
1k views

How to verify signature in web3j?

I am sending an signature with EIP_712 structure from metamask to the java backend (web3j) and I need to verify it on backend java application. In this topics it is discussed the support of EIP-712 in ...
8 votes
1 answer
158 views

Is there a zk-rollup proof explorer?

With the rise of various L2 solutions I started wondering whether it's possible to inspect the transaction proofs which are sent to L1. Is there a tool with an interface a'la block explorer, but ...
7 votes
0 answers
907 views

Save hardhat node state for later

Is there a way to save your current local hardhat node state for later? Or do you have to restart every time you start up a new node? Like: yarn hardhat node --from-state ./state-dir Or something
7 votes
1 answer
267 views

Is go-ethereum performance much affected by linux filesystem choice?

Storage performance often seems to be a bottleneck when running a geth node, even when running on SSDs. Does anyone know of performance comparisons under different linux filesystem choices? By ...

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