The following is an account of one key plank of VOC claims to Taiwan. In this, the VOC representative stresses that the act of accepting protection has resulted in the cession of sovereignty to the Dutch East India Company.
Dagregister gehouden te Edo door Willem Jansz
“Tayouan has about two hundred villages. They lack a chief or a lord and they war constantly with each other day and night. There were five villages in the vicinity of Tayouan and they asked for the protection of the Dutch fort against their enemies. If they received this protection, they would give their land to us and become our subjects. We did as they asked and they acknowledged us as sovereign.”
5 June 1631, Dagregister gehouden te Edo door Willem Jansz. van Amersfoort, NFJ 271.