Deploy Contract With Custom Metadata Hash
When you deploy a Solidity contract the compile has removed the comments from the bytecode, but the last 32 bytes of the bytecode is actually a hash of: hashed bytecode compiler settings contract source...
Justin Silver Blog
NGINX Feature Flag Reverse Proxy
Use NGINX as a reverse proxy to different back-end servers based on feature-flags set in the ngx_http_auth_request_module add-on. In my implementation for Secret Party the subdomain is used to determine which event/party a Note...
Slither & Echidna + Remappings
While testing a project using hardhat and Echidna I was able to run all tests in the project with echidna-test . but was not able to run tests in a specific contract that imported...
UnsafeMath for Solidity 0.8.0+
UPDATE: Check out the @0xdoublesharp/unsafe-math module available on NPM for an easy to use, prepackaged, and tested version of this library! UnsafeMath is a Solidity library used to perform unchecked, or “unsafe”, math operations....
NFT – Mint Random Token ID
The perceived value of many NFTs is based on that item’s rarity making it ideal to mint them fairly. Rarity snipers and bad actors on a team can scoop up rare items from a...
Provable Randomness with VDF
A Verifiable Delay Function (VDF) is a linearly computed function that takes a relatively long time to calculate, however the resulting proof can be verified to be the result of this computation in a...
Fantom Lachesis Full Node RPC
Create an Alpine Linux image to run the lachesis node for the Fantom cryptocurrency. The run.sh just starts the nodes with the ports you set in the environment. Use docker-compose to define the TCP/UDP...
