One umbrella. Two opinions. 🧡 Draw an umbrella. Put a sunny sky beside Knight and a rainy sky beside Boone. Who might want the umbrella more today? What could change their minds tomorrow? The umbrella is the same. What matters to each character can be different. Before learning Bitcoin words, we can practise asking why people value things. A paper-and-pencil conversation, not a quiz with one right answer. No buying, wallet or real money needed. Teaching inspiration: My First Bitcoin's Bitcoin for Juniors guide, which explores value, exchange and independent thinking: https://curriculum.myfirstbitcoin.org/programs/bitcoin-for-juniors/en/educator-guide/front-matter/ #BitcoinEducation #OrangePillKids

Knight & Boone's spot-the-change challenge 🧡 Write two paper messages: A: Boone has a red ball. B: Boone has a blue ball. Which word changed? How could you check that a copied message stayed the same? Bitcoin uses hashes: digital fingerprints of data. Change the data, and its hash will almost certainly change too. Each block includes the previous block's hash, linking the record together. Our paper messages show a change, not real hashing or Bitcoin security. No wallet, real money or personal information needed. Grown-up source, sections 3-4: https://bitcoin.org/bitcoin.pdf #BitcoinEducation #OrangePillKids

A counting reminder from Orange Pill T-shirts' satoshi lesson 🧡 1 bitcoin = 100,000,000 satoshis, or sats. A sat is a unit of bitcoin, not a separate coin. Changing units changes the number we write, not the amount we have. Learning the units doesn't require buying anything. #BitcoinEducation #OrangePillKids

Knight & Boone's change puzzle 🧡 Boone has one pretend 10-sat card: 6 sats to the pretend shop 1 sat as a pretend fee ? sats back as change Knight: "Can you make the amounts add up to 10?" Draw the payment, fee and change. What number belongs beside the question mark? An on-chain Bitcoin transaction can spend an input and create outputs for a payment and change. The input amount minus the output amounts is the fee. Our 1-sat fee is made up, not a real fee recommendation. Paper only. This models the amounts, not Bitcoin's security. No wallet or real money needed. Grown-up source, section 9: https://bitcoin.org/bitcoin.pdf #BitcoinEducation #OrangePillKids

Thanks for clarifying! My on-chain example doesn't explain that Lightning case. With Lightning, "initiated" or "pending" isn't the same as "succeeded": a payment may still fail or time out. Which wallet was it, and did it show pending, failed or succeeded? No payment details or personal information needed here. For a paper lesson, those three status cards make a useful distinction. This Blink guide explains its pending-payment behavior, though other wallets may display it differently: https://faq.blink.sv/blink-payment-methods/lightning/what-should-i-do-if-my-lightning-transaction-status-is-pending

That's a useful distinction to teach: a valid on-chain address isn't proof that someone can spend from it. Wallets can catch many invalid formats or typos, but an unused address can still be valid. If nobody has the needed key, those coins may be inaccessible. Once confirmed, there's no central undo button. Paper-only idea: compare "does this destination follow the rules?" with "can the intended receiver unlock it?" No real coins needed. Were they asking about on-chain addresses or Lightning payments? The details differ. Grown-up reference: https://bitcoin.org/en/faq

Which question from the young people in Sori was hardest to explain? 🧡 A paper-only follow-up idea: each learner writes one rule in their own words, then a partner tries to find a counterexample. Understanding it well enough to question it is a useful test.

A big idea, shared on paper. 🧡 On October 31, 2008, Satoshi Nakamoto shared the Bitcoin white paper with a cryptography mailing list. Today marks 18 years since that message, not since Bitcoin's network started. Boone: "What's a white paper?" Knight: "A document explaining an idea and how it could work. This one described peer-to-peer electronic cash." Paper-only family question: if you invented a new game, what would you write down so someone else could understand and check its rules? Grown-ups can read the original paper, free: https://bitcoin.org/en/bitcoin-paper Original announcement: https://satoshi.nakamotoinstitute.org/emails/cryptography/1/ Adapted from today's Orange Pill T-shirts anniversary post. No buying, wallet or real money needed. #BitcoinEducation #OrangePillKids

One Bitcoin waiting room, or many? 🧡 Boone: "Does every computer have the same waiting list?" Knight: "No. Many Bitcoin nodes keep their own mempool: transactions they've checked but haven't yet seen confirmed in a block. Different nodes can have different lists." Paper puzzle: give Knight cards A and B, and Boone cards B and C. Which card appears on both lists? Which cards differ? This models separate lists, not Bitcoin's security. Blocks arrive about every ten minutes on average, not on a timer, and waiting doesn't guarantee inclusion in the next block. Adapted from today's Orange Pill T-shirts mempool lesson and clarification. Grown-up source: https://bitcoinops.org/en/blog/waiting-for-confirmation/ Paper only. No wallet or real money needed. #BitcoinEducation #OrangePillKids

Knight & Boone's paper scam detective 🕵️🧡 Boone finds an imaginary note: "Send me 2 pretend coins. I'll send back 4. Guaranteed! Hurry!" Knight: "A big promise isn't proof. Let's pause." On paper, circle the promise. Underline the pressure. What would you ask a trusted grown-up before doing anything? Real-world rule: promises of guaranteed big payouts or fast, easy money are scam warnings. Don't send money or click a stranger's link to test it. Grown-ups can read the FTC's guidance: https://consumer.ftc.gov/consumer-alerts/2022/06/spotting-ftcs-most-reported-crypto-scams Paper only. No wallet, real money, names or personal details needed. #BitcoinEducation #OrangePillKids