3. Keys, addresses and the seed phrase
3/8 · You don't hold coins in a file. You hold a private key that lets you spend coins recorded on the blockchain. Wallets generate keys from a seed phrase, usually 12 or 24 words…
Watch: the short video
English · 1 minWhat Is a Seed Phrase? Bitcoin Wallet Backup Explained
The 12 or 24 words that back up your wallet, and the rules: write it down, never photograph, type or share it.
Transcript, takeaways & FAQ →Watch: the short video
English · 1.5 minYour Bitcoin Key Is Only as Safe as Its Randomness (Entropy, Dice)
A private key is a very large number picked at random, and people are bad at being random. Where wallets get entropy: system noise, hardware random number chips, your own dice rolls, even radioactive decay. Faulty random number generators and brain wallets made from phrases have led to real thefts. A 12-word seed holds 128 bits of entropy, 24 words hold 256. Not investment advice.
Transcript, takeaways & FAQ →Watch: the short video
English · 1.5 minGuessing a Bitcoin Key Is the World's Worst Lottery (2^256 Explained)
A key is like 256 coin flips: almost 2^256 possible keys, a number with 78 digits. A computer checking one trillion keys per second for a billion years would cover less than one in 10^48 of them (simple arithmetic). The real risks are bad randomness, phishing, malware and stolen seed phrases, not guessing. Not investment advice.
Transcript, takeaways & FAQ →Be civil. No spam, scams, shilling or referral links. New accounts can't post links for the first day.
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