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Chain Reactions: Bitcoin Board

Community · Mixed · 20–30 min

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About This Board

From blocks and hashes to HODL and Lightning, test your knowledge of how Bitcoin works, the network that secures it, and the culture that sprang up around a 21-million coin cap. This is a Middle School Science review game in a Jeopardy-style format: a teacher puts the board on one screen, teams pick clues by point value, and the class answers out loud — no student devices or accounts needed. Categories: Bitcoin Basics, Blockchain Mechanics, Mining & Network, Security & Wallets, Economy & Culture.

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Questions in this game

A peek at what's on the board — 5 categories and one sample clue from each. Answers stay hidden until you open them, so the game still works.

  • Bitcoin Basics

    This original cryptocurrency was created by the pseudonymous Satoshi Nakamoto.

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    Bitcoin

    +4 more clues in this category

  • Blockchain Mechanics

    Each batch of transactions linked to the previous one by a cryptographic hash.

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    Block

    +4 more clues in this category

  • Mining & Network

    Specialized participants who compete to append blocks and collect rewards.

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    Miners

    +4 more clues in this category

  • Security & Wallets

    The secret that authorizes spending from a Bitcoin address.

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    Private key

    +4 more clues in this category

  • Economy & Culture

    A meme-born term for holding coins through volatility.

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    HODL

    +4 more clues in this category

Board content

Bitcoin Basics

$100 — This original cryptocurrency was created by the pseudonymous Satoshi Nakamoto.
Bitcoin
$200 — The open document that introduced Bitcoin’s design to the world.
White paper
$300 — The maximum number of bitcoins that will ever exist.
21 million
$400 — The smallest unit of bitcoin, equal to one hundred-millionth of a BTC.
Satoshi
$500 — The distributed ledger that records all bitcoin transactions.
Blockchain

Blockchain Mechanics

$100 — Each batch of transactions linked to the previous one by a cryptographic hash.
Block
$200 — The consensus method where computation proves a valid hash solution.
Proof-of-work
$300 — The tree-like structure summarizing transactions within a block.
Merkle tree
$400 — The hashing algorithm used to secure Bitcoin blocks.
SHA-256
$500 — The model where spendable balances are defined by unspent outputs.
UTXO

Mining & Network

$100 — Specialized participants who compete to append blocks and collect rewards.
Miners
$200 — The targeted time between new Bitcoin blocks.
Ten minutes
$300 — The mechanism that tunes proof-of-work to maintain the target block interval.
Difficulty adjustment
$400 — The recurring event that reduces the block subsidy by 50%.
Halving
$500 — Independent validators that check blocks and enforce consensus rules.
Full nodes

Security & Wallets

$100 — The secret that authorizes spending from a Bitcoin address.
Private key
$200 — A human-readable backup of a wallet, typically 12 to 24 words.
Seed phrase
$300 — A dedicated offline device for storing private keys safely.
Hardware wallet
$400 — A scheme requiring more than one key to sign a transaction.
Multisig
$500 — A scannable code used to share a receiving address without typing.
QR code

Economy & Culture

$100 — A meme-born term for holding coins through volatility.
HODL
$200 — Accumulating small amounts regularly, measured in the tiniest units.
Stacking sats
$300 — An extra amount attached to encourage miners to include a transaction.
Transaction fee
$400 — An off-chain payment network enabling fast, low-fee BTC transfers.
Lightning Network
$500 — A monetary philosophy favoring scarce, non-inflationary assets.
Hard money

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