Terms of Use

1. Acceptance of Terms

By accessing or using Tigaketuk, you acknowledge that you are interacting with an educational, non-commercial software demonstration. These Terms of Use govern simulated catalogue browsing, bidder registration, simulated proxy bids, and certificate verification.

2. Demonstration Accounts and Simulated Bidding

User profiles provided on this site are pre-configured demo identities (such as Demo Collector or Tigaketuk Admin). No passwords or payment mechanisms are required. All currency figures (Indonesian Rupiah / IDR), estimates, hammer prices, and invoices represent simulated game values and do not constitute real financial debts.

3. Intellectual Property and Artwork Imagery

Artworks depicted in this catalogue represent masterworks by historical and contemporary artists. Digital reproductions are sourced from Wikimedia Commons and public cultural heritage archives under Public Domain (PD-Art, CC0) or Creative Commons attribution licenses (CC BY, CC BY-SA).

All original artist copyrights remain with the respective artists, estates, or institutions. Image credits and license citations are visible on each individual lot record.

4. Authenticity and Hologram Verification Prototype

The Tigaketuk Certificate of Authenticity (CoA) and hologram inspection features simulate a dual-layer physical-digital provenance ledger. Cryptographic SHA-256 hashes and serial numbers are generated algorithmically for educational evaluation.

5. Disclaimer of Warranties and Limitation of Liability

This platform is provided on an "as is" and "as available" basis without warranties of any kind, whether express or implied. The developers and operators of Tigaketuk accept no liability for any reliance placed upon catalogue descriptions, provenance lists, or condition notes.

6. Related Policies

Please review our Privacy Policy for data handling practices and our Conditions of Business for Buyers for detailed auction increment, buyer’s premium, and soft-close mechanics.