Joshy Orndorff JoshOrndorff

Grandpa - The Board Game

Players: 5+ (4 actual players, 1 author)
Play time: 15 - 60 min
Materials: A large whiteboard and many colored markers

Overview

Grandpa is a Byzantine fault tolerant blockchain finality gadget (formal spec). This collaborative board game allows players to learn and practice the Grandpa protocol while also having fun together.

Joshy's reflections on the Blockchain and Smart Contracts hybrid module as delivered during week 2 of PBA3 in Berkeley 2023.

Content Sequencing and Hybrid Module Approach

For the UCB cohort we largely re-wrote the smart contracts module, moving away from a narrow focus on ink! to a much broader perspective across the blockchain space and historically. We also integrated this content tightly with the existing blockchain module to create a week-long hybrid module. The motivation is that the idea of a smart contract predates blockchain and was a goal well before it was realized on blockchains.

I think this ordering makes a lot of sense and should be kept. However, I think the idea of one massive module can be improved upon. Thank you Nuke and Pauline for the opportunity to teach it as a monolith until the proper delineations became clear.

UCB Content Order - Reminder

This document contains corrections to mistakes in the UTXO wallet assignmetn for PBA's Hong Kong cohort.

Incorrect comment about input and output value

The doc comments on the transaction type incorrectly state that the output value should exceed the input value. This is exactly backwards. Luckily this is only a comment mistake, the tests are correct and this should not affect your programmin experience at all.

/// A Bonecoin Transaction

	$ curl <endpoint> -H "Content-Type:application/json;charset=utf-8" -d '{
	"jsonrpc":"2.0",
	"id":1,
	"method":"author_removeExtrinsic",
	"params": ["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

	// SPDX-License-Identifier: GPL-3.0-only
	pragma solidity >=0.8.0;

	contract Incrementor {
	uint private value;
	address private last_caller;

	function inc() public {
	value += 1;
	last_caller = msg.sender;