1. Rai Stones was a database (Micronesia) 2. Quipu Knots was a database (South America) 3. Hawala is a database. (Islamicate) 4. Kula Rings was a database (Melanesia) 5. Clay Tokens was a database (Mesopotamia) 6. Caribou Credits was a database (Sub-Arctic) 7. Seal Share System was a database (Greenland) 8. Palembang Tin-Ingots was a database (Indonesia) 9. Yukaghir hunting-credit was a database (Siberia) 10. Pigeon-Post Tally was a database (Mediterranean) 11. Aboriginal Message Stik was a database (Australia) 12. Bridewealth & Cattle Ledgers is a database (Africa) 13. Ortoq Bullion Network was a database (Cent. Asia) 14. Ottoman Defter Register was a database (Balkans) 15. Knife Money Registries was a database (China) 16. Mnemonic Tallies was a database (Scandinavia) 17. Wampum Belts was a database (North America) 18. Cacao-Ledger was a database (Mesoamerica) 19. Shroff Networks was a database (India) 20. Tally Sticks was a database (England) 21. Bitcoin is an immutable database (Global)
