We keep it simple: setup, security, and troubleshooting for the coins and wallets Nashville actually uses.
A calm, no-hype class from your Nashville Geeks. How Bitcoin and blockchains actually work. No predictions, no sales pitch, just the ideas.
Educational content · Not financial advice
A shared record of money that nobody owns and everybody can check.
Launched in 2009, Bitcoin is a public ledger copied across thousands of computers worldwide. New entries are added roughly every ten minutes, and no bank, company, or government can rewrite the history.
Blocks are pages; the chain is the binding.
Each block of transactions is stamped with a fingerprint of the block before it. Change anything in an old block and every fingerprint after it breaks, which is why tampering is obvious and effectively impossible.
A lottery that keeps everyone honest.
Computers race to solve a puzzle for the right to add the next block. Winning costs real electricity, so cheating costs more than playing fair. That cost is what secures the ledger.
A keychain, not a purse.
Coins never leave the ledger. A wallet holds your private key, the secret that lets you sign them over to someone else. Custodial means someone keeps the key for you; non-custodial means you keep it yourself.
One secret number is the whole ballgame.
Whoever knows the key controls the coins. There is no forgot password link. That's why seed phrases get written on paper and stored like jewelry, never screenshotted or emailed.
Public ledger, private habits.
Every Bitcoin transaction is visible forever to anyone. Exchanges and apps keep their own internal records off-chain. Knowing which is which tells you what's actually yours.
Education only · Not financial advice
In 2008, a paper signed “Satoshi Nakamoto” proposed something quietly radical: money whose record is kept by everyone and controlled by no one. Bitcoin matters historically because it solved a decades-old puzzle: how strangers can agree on a shared history without trusting a middleman.
Imagine a town notebook everyone photocopies every ten minutes. To cheat, you’d have to change every copy in town at once, and everyone is watching. That’s a blockchain.
Bitcoin is a single-purpose network built for one job: recording who holds what. Most other cryptocurrencies are experiments layered on the same idea, some are programmable platforms, some are jokes, many quietly disappear. Understanding the difference is most of the homework.
If someone can change the rules alone, it’s a company. If nobody can, it’s a protocol. Bitcoin is the second kind, that’s the whole point.
A wallet doesn’t hold coins. It holds a private key, the secret that proves the coins are yours. Keep the key yourself (non-custodial) and you answer to no one; let an exchange keep it (custodial) and you’re trusting them like a bank, without the insurance.
Setting up a wallet safely, writing down a seed phrase the right way, spotting scams, and reading a transaction on the public ledger, at your kitchen table, at your pace.