Dissecting Bitcoin Security
summary
Explains concrete mechanics: private keys are 256‑bit numbers and public keys use secp256k1 ECDSA, addresses derive via SHA‑256 then RIPEMD‑160 and Base58, and coins split to satoshis within a 21 million cap. Describes miners, the 10 minute block time and 25 BTC block reward (2016), the Merkle tree, proof‑of‑work lottery, the 50% (majority)‑attack risk, ~7 tx/s limit, and practical failures around web exchanges and key‑backup models like hierarchical deterministic (BIP44) wallets.
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chapters (20)
- 0:00Introduction
- 1:40Bitcoin
- 6:18Bitcoin Wallet
- 7:50Bob and Alice
- 18:26Pay to Script Hash
- 19:23Scripting Language
- 21:26Scripting Example
- 21:55Public and Private Keys
- 22:33Bitcoin Wallets
- 27:16Bitcoin Wallet Types
- 28:57deterministic seeded wallet
- 31:10package overview
- 33:55miners
- 34:12minor
- 35:49fifth attack
- 38:25block chain
- 39:41Proof of work
- 43:15Alternative coins
- 43:56Conclusion
- 44:46Questions
