| 1. | GPU - Graphics Processing Unit |
| 2. | Mining - Process of creating new coins |
| 3. | Bitcoin - The first crypto-currency |
| 4. | Hash - process or function that takes an input and creates a unique output that can't be reversed. Same input will always create same output |
| 5. | SHA256 - Simple Hashing Algorithm 256 bits |
| 6. | Block - bitcoins transactions grouped together by miners to verify the transactions. Occurs every 10 minutes on average. |
| 7. | Blockchain - A shared file containing all Bitcoin transactions from day 1 which is created by miners contains a chain of blocks |
| 8. | Opensource - Mechanism to develop software that is free and anyone can contribute to |
| 9. | Crypto-Currency - Digital currency like Bitcoin that uses Cryptography to maintain privacy and accuracy of who owe what |
| 10. | Proof-of-work - Used in mining to make it very hard to create fake data in the block-chain |
| 11. | Ledger - File aka Blockchain where all transactions are recorded |