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+Bitcoin
+- cash
+- transactions
+- cryptographic puzzle to spend
+- stochastic
+Public Key Cryptography
+- Public Key
+-- address = public-key-hash
+- Private Key
+- Signature [of a message]
+- Hash
+Different Methodologies for Access
+- all ultimatelyaccess a scripting language
+Payment to Different Sorts of People
+Blockchain
+- hashes connecting blocks
+- into a long chain