Inca Quipu (Knot-Recording)

Timeline

1. c. 600–1100Coastal and highland areas of south-central Peru · PeruArchaeological evidence shows early quipu artifacts at Wari culture sites, made of cotton or camelid fiber, possibly used to record quantities; some scholars believe quipu originated even earlier, tracing back to coastal pre-ceramic periods, though archaeological evidence remains uncertain.
2. c. 1200–1438Cuzco and surrounding areas · PeruDuring the Inca chiefdom and early empire phases, the quipu was incorporated into the state administrative system, its encoding rules gradually standardized, developing a decimal structure used to record population, taxes and tribute, military quotas, and other administrative data, while training specialized quipu recorders (quipucamayoc).
3. 1511–1520Throughout Tawantinsuyu · AndesAt the height of Huayna Capac's reign, every province of the empire had dedicated quipucamayoc; quipus were transmitted by messengers (chasqui) along the road network, enabling nationwide coordination of censuses, tribute collection, military deployment, and historical records; some scholars believe quipus may also have encoded narrative information, but this remains disputed.
4. 1533Peru (colonial and modern) · PeruSpanish colonial authorities viewed quipus as potential "pagan records" and destroyed large numbers; nonetheless, about 600 artifacts survive in museums worldwide. Scholars of the 20th and 21st centuries (the Aschers, Gary Urton, and others) have built quipu databases, attempting to decipher their non-numerical information encoding; some Peruvian communities still preserve the knot-recording tradition.