# Hi everyone.🫡 ## As a researcher of @research-collective.near and a student enrolled in the [NEAR Certified Researcher Course](https://near.org/xvii.near/widget/NCR.Index?tab=home). I wanted to share my homework assignment for Week 10 & 11 (November 29, 2023): Advanced Topics in Cryptography & Zero-Knowledge Proofs in the [M7 lesson plan](https://hackmd.io/@doulos819/nrc-10). For this assignment, I have to share a transaction hash of a significant on-chain memory and visit Opact Tickets (formerly hideyour.cash), explore their zero-knowledge proof system and share my experience. *A transaction hash of a significant on-chain memory to me is LaqDKLhrML6WtBYZTnykaBrsP69CGPWDVg9YTDms8Ba . You can use [Nearblocks](https://nearblocks.io/) to view the history.* *Due to my first experience using @opact_near.near site I will not be using the platform again until there is an update. You can view my experience here: https://t.me/ResearchWG/181/2833*