crazyoptimist crazyoptimist

foundry-cast

Wallet operations (balance checks, transfers) using Foundry's cast CLI, based on: https://gist.github.com/crazyoptimist/232febf49ad0df9f039f9789b91129f1

Wallet

Keystore name: main (file: ~/.foundry/keystores/main, use with --account main)
"main" wallet address: 0xFaF2D6577eFDeC875cbcbcf930fe10c8fC547799
Password is NOT stored anywhere. cast send --account main ... prompts for the

Using `cast` (Foundry) as a Hot Wallet — ETH, USDT-ERC20, USDT-BEP20

cast only works with EVM-compatible chains, which covers Ethereum and BNB Smart Chain (ETH, USDT-ERC20, USDT-BEP20). TRON (USDT-TRC20) is not EVM-compatible and cannot be used with cast.

Security note: A keystore/hot wallet on a general-purpose machine is meaningfully riskier than hardware signing. For anything beyond small, disposable amounts, pair cast with a hardware wallet instead of a raw private key — most cast wallet commands (send, wallet address, wallet list, etc.) support -l/--ledger and -t/--trezor flags. Always verify RPC endpoints and token contract addresses before broadcasting, and test with tiny amounts first.

1. Install Foundry (includes `cast`)

curl -L https://foundry.paradigm.xyz | bash

Uncle Bob

The goal of software architecture is to minimize the human resources required to build and maintain the required system.
The only way to go fast, is to go well.
Any organization that designs a system will produce a design whose structure is a copy of the organization's communication structure. (Conway's law)

SOLID

SRP: Each software module has one, and only one, reason to change. (This is NOT "A function should do one, and only one, thing, and do it well.") A module should be responsible to one, and only one, actor. (actor == user or stakeholder)
OCP: For software systems to be easy to change, they must be designed to allow the behavior of those systems to be changed by adding new code, rather than changing existing code. A software artifact should be open for extension but closed for modification.

In Go, the select statement is used to handle multiple channel operations and simplify concurrent communication and synchronization problems. The select statement is similar to the switch statement, but each case must be a channel operation.

Basic syntax of the select statement:

select {
    case <-chan1:
        // Executed when chan1 has data to receive
    case chan2 <- value:
        // Executed when data can be sent to chan2

	// ... snip ...

	/* https://github.com/morhetz/gruvbox */
	static const char col_normfg[] = "#fbf1c7"; /* fg0 */
	static const char col_normbg[] = "#282828"; /* bg0 */
	static const char col_normborder[] = "#504945"; /* bg2 */
	static const char col_selfg[] = "#1d2021"; /* bg0_h */
	static const char col_selbg[] = "#98971a"; /* green */
	static const char col_selborder[] = "#b8bb26"; /* light green */

	// Locate the "Scripts" tab in Postman. Select "Post-response" left side tab. Copy, paste, and edit this script.

	const jsonData = pm.response.json()

	// Make sure necessary variables exist in the response
	pm.test("Access Token exists", function () {
	pm.expect(jsonData.access_token).to.not.equal(undefined);
	});
	pm.test("Refresh Token exists", function () {
	pm.expect(jsonData.access_token).to.not.equal(undefined);

	; Credits: https://www.the-automator.com/

	; Create certificate
	$cert = New-SelfSignedCertificate -Subject "{CertName}" -CertStoreLocation "cert:\CurrentUser\My" -HashAlgorithm sha256 -type CodeSigning

	; Create password
	$pwd = ConvertTo-SecureString -String "{123456}" -Force -AsPlainText

	; Export Certificate to a file
	Export-PfxCertificate -cert $cert -FilePath {CertName}.pfx -Password $pwd

	package main

	import (
	"fmt"
	"time"
	)

	var index int = 0

	func main() {

	package main

	import (
	"fmt"
	"time"
	_ "time/tzdata" // Embed the timezone database
	)

	func main() {
	utcTime := time.Date(2024, time.Now().Month(), 26, 1, 30, 0, 0, time.UTC)

	# new line + workdir + $
	export PS1="\n\w $ "
	export PROMPT_DIRTRIM=2