Making Money Disappear with Hash Functions!
summary
Python code is used to generate addresses from random 256‑bit keys and to query blockchain.info’s API; mass querying triggers denial‑of‑service blocking. Malformed-address patterns actually hold real value: about $32,000 in that account for an all‑zero address and about $1,600 for a point off the curve. The talk demonstrates ECDSA on curve y^2 = x^3 + 7 and the RIPEMD160(SHA256(public key)) step, showing how hashing compresses addresses but also creates permanent, unspendable black‑hole funds.
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chapters (11)
- 0:00Making Money Disappear with Hash Functions!
- 0:33What is a Bitcoin Address?
- 0:49What is Bitcoin?
- 1:18Two Problems to Solve
- 3:31Origins of the Public Key
- 4:45Generating a Public Key
- 5:47Elliptic Curve Signatures
- 7:02Cryptographic Hashes
- 8:15Counting Money in the Void!
- 10:25The Hashing Debate
- 11:59References
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