All Questions
10 questions
3
votes
1
answer
807
views
Merkle tree airdrop how to build
I am writing an ERC20 token contract (contract token) with a mint of 2 million tokens.
I am also writing a Merkle tree airdrop contract and sending it to this contract (contract Merkle tree). So, let'...
- 31
2
votes
1
answer
33
views
What is the most efficient way of whitelisting at this moment in solidity?
Normal whitelisting setter functions are the most basic ones, I came across two more ways, Merkle Tree and signature-based whitelisting.
The question I had is:
Are the gas usage differences among ...
- 5,305
1
vote
1
answer
63
views
How can a bytes32[] variable have a custom method (i.e., verifyCalldata)?
Code: https://www.contractreader.io/contract/mainnet/0x0C7D4bdA40CF78F9F1BAf6e3D5774f1E22c9CC4B
My question is about this verifyCalldata() call:
function verifyAddress(
uint256 _projectId,
...
- 113
1
vote
1
answer
113
views
Smart Contract: false Transaction mined but execution failed (Merkle trees)
I'm trying to implement a smart contract whitelist using Merkle trees. I have been following along This tutorial. However, instead of using the generate part, I used the online tool here: https://lab....
- 131
1
vote
1
answer
2k
views
use javascript merkle tree to generate hex proof for solidity merkletree validation
Here is my js code of generating hex proof for solidity verification
const express = require('express')
const { MerkleTree } = require('merkletreejs');
const { bufferToHex } = require('ethereumjs-util'...
- 17
1
vote
0
answers
148
views
BLUR airdrop claim explained - embedding a proof into a transaction
Recently, I saw that Blur had a twitter dependent airdrop. So basically you had to tweet and then you would get the option to claim tokens. I went to analyze the code, but it is overwhelming for me.
...
- 31
1
vote
1
answer
546
views
Python Merkle Tree Libraries Don't Produce The Same Merkle Root As Node.js's "merkletreejs"
I have been trying to create merkle tree proofs in python.
In a whitelisted NFT project, I've used npm's merkletreejs which is a JavaScript library and it worked beautifully. Here is the Github page ...
- 373
0
votes
1
answer
29
views
Merkletree proof
in js i want array like this let arr = ["a","b","c"]
but i am getting arr = ['a','b','c']
is there any way to do this?
Notes : it's for merkletree to send proof through ...
0
votes
1
answer
384
views
How to compute witness for Merkle tree proof using Zokrates?
I am trying to learn how Zero Knowledge proof for Merkle tree verification work. Therefore I am using this example from Zokrates:
import "hashes/pedersen/512bit" as hash;
import "hashes/...
- 255
0
votes
1
answer
34
views
Is there a way to prove that a previous transaction was mined in solidity?
Context
We are working on a charity NFT, and we want to gate minting to those who have ALREADY donated to the charity by sending ETH to the charity wallet.
This makes things cleaner for tax write off ...
- 103