Golf challenge

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Across
  1. 2. BTC power couple #2
  2. 4. More secure than one key
  3. 5. Holding bitcoin yourself
  4. 8. Neither buy nor sell
  5. 11. Wrote whitepaper
  6. 13. Where you shouldn’t leave bitcoin
  7. 15. 12 or 24 words
  8. 17. The home for your bitcoin
  9. 18. I lost my BTC in a ______ accident
Down
  1. 1. Unit of power
  2. 3. Where you send transactions
  3. 6. Fast payments
  4. 7. Bitcoin country
  5. 9. He ran bitcoin in 2009
  6. 10. Used to sign transactions
  7. 12. Last protocol upgrade
  8. 14. Run your own ____
  9. 16. BTC power couple #1