All auction proceedings are verified by independent notary official mr. J. Borren of mr M.J. Meijer Notarissen N.V., Amsterdam.
Sellers are not permitted to place bids on their own submissions. To that end, our system ensures that sellers are unable to place bids on items submitted using their own accounts.
For all of Catawiki's auctions, if a bid is placed in the last minute, the bidding window is automatically increased by 90 seconds. This gives other bidders enough time to place a counter-bid and you won't be required to wait till the final seconds start ticking away before placing your bids. Catawiki always provides a clear indication of which bidder placed the highest or winning bid. All winning bidders receive a confirmation email indicating they've won as soon as the auction ends.
No employees, directly involved in the evaluation and curation of lots, nor their family members, are allowed to sell lots on Catawiki. Subject to the above, all employees can place bids, and therefore, buy lots on Catawiki, but experts are not allowed to bid (and therefore buy lots) at their own auctions.
If users wish to sell objects on Catawiki, they may be asked for a scan or photograph of a valid proof of identification (government-issued photo ID). The information on the proof of identification, which clearly shows at least the full name, date of birth and ID (document) number, is required by our third party payment processor, Stripe, that processes payments on our online platform.