User agreement

Effective date: August 1, 2026

This User Agreement governs your access to and use of CLCT’s website, marketplace, auction platform, accounts and related services collectively, the “Services.”

The Services are operated by Bitcoin Culture Hub, doing business as CLCT (“CLCT,” “we,” “us,” or “our”).

By creating an account, registering to bid, placing a bid, purchasing an item, listing an item or otherwise using the Services, you agree to this User Agreement and our Privacy Policy.

Please read these terms carefully. They contain important provisions concerning binding bids, payments, disclaimers, limitations of liability and dispute resolution.

1. CLCT’s Role

CLCT provides an online marketplace through which approved sellers may offer collectibles and other property, each a “Lot,” through auctions, fixed-price sales or other transaction formats.

Unless a listing expressly states otherwise:

• The seller, not CLCT, owns the Lot.
• CLCT facilitates the transaction on the seller’s behalf.
• The sale contract is between the seller and the buyer.
• CLCT is not the manufacturer, grader or authenticator of the Lot.
• CLCT does not take title to the Lot merely by listing or facilitating its sale.

CLCT may provide payment processing, communications, transaction records, shipping coordination and dispute assistance.

2. Eligibility and Accounts

You must be at least 18 years old and legally able to enter into a binding contract to use transactional portions of the Services.

You agree to:

• Provide accurate and current account information
• Maintain the security of your login credentials
• Use only accounts you are authorized to control
• Promptly update changes to your contact or payment information
• Accept responsibility for activity conducted through your account

You may not transfer, sell or share your account without CLCT’s written permission.

If you use CLCT on behalf of a company or other organization, you represent that you have authority to bind that organization to this User Agreement.

CLCT may require identity, payment or financial verification before permitting certain bids, purchases, sales or withdrawals.

3. Acceptable Use

You may not:

• Violate any applicable law or third-party right
• Manipulate an auction or sale
• Coordinate bids or prices with another person
• Bid on your own Lot, directly or indirectly
• Place a bid without intending or being able to pay
• Submit false, misleading or fraudulent information
• Interfere with the operation or security of the Services
• Circumvent account restrictions or technical controls
• Use bots, scrapers or automated systems without permission
• Introduce viruses or malicious software
• Infringe intellectual-property rights
• Harvest personal information about other users
• Use the Services to sell stolen, counterfeit, prohibited or unlawfully obtained property
• Initiate an improper payment reversal or chargeback

CLCT may investigate suspected violations and may restrict, suspend or terminate accounts, bids, listings, transactions or access to the Services.

4. Auctions and Bidding

4.1 Registration

You must have an approved account and an accepted payment method to bid.

CLCT may establish or change bidding limits and may require additional verification or a deposit for particular Lots.

4.2 Binding bids

Each bid is a binding and irrevocable offer to purchase the Lot at the amount bid, plus any disclosed fees, taxes and shipping charges.

You may not retract or cancel a bid merely because you changed your mind, entered the wrong amount or failed to inspect the listing.

Contact CLCT immediately if you believe an unauthorized person used your account or that a clear technical error occurred. CLCT may correct an obvious error but is not required to cancel a valid bid.

4.3 Proxy bidding

CLCT may allow you to enter a maximum bid.

The system may automatically increase your current bid in the applicable increments, up to your maximum bid, as competing bids are received.

Your maximum bid will not ordinarily be disclosed to other users.

When identical maximum bids are submitted, the first bid recorded by CLCT’s system will have priority.

4.4 Auction closing

The scheduled closing time appears on each auction listing.

CLCT may use an extended-bidding period. When a qualifying bid is placed near the scheduled closing time, the auction may be extended for the period disclosed on the listing.

CLCT’s system clock and transaction records determine when bids were received and which bid was highest.

4.5 Reserve prices

Unless a listing expressly states that an auction is “without reserve,” the auction is with reserve.

In an auction with reserve, the seller is not obligated to sell unless the reserve price is met.

CLCT may display whether the reserve has or has not been met without disclosing the reserve amount.

Neither sellers nor persons acting for them may place undisclosed bids on their own Lots.

4.6 Winning bidder

At the close of an auction, the highest valid bidder who has satisfied any applicable reserve becomes the winning bidder.

A binding purchase contract is formed when CLCT records the auction as closed and confirms the winning bidder, subject to fraud review, payment authorization and the correction of an obvious error.

CLCT may reject or invalidate a bid that:

• Violates this User Agreement
• Results from fraud or account misuse
• Was caused by a material system error
• Cannot be processed or verified
• Is prohibited by law
• Threatens the integrity of the auction

CLCT will not invalidate a completed sale merely because the seller later believes the price was too low.

5. Fixed-Price Purchases and Offers

When CLCT offers a fixed-price purchase feature, clicking the final purchase confirmation creates a binding obligation to purchase the Lot.

If CLCT offers a “Make an Offer” feature:

• An offer is binding for the period stated
• The seller may accept, reject or counter the offer
• A binding sale is formed when the seller accepts the offer
• An offer may not be withdrawn after acceptance

A Lot remains available until CLCT records the completed transaction. If multiple users attempt to purchase the same Lot, CLCT’s transaction records determine priority.

6. Prices, Fees and Taxes

The total amount due may include:

• The winning bid or fixed purchase price
• Any buyer’s premium
• Payment-processing charges
• Shipping and insurance
• Sales, use, value-added or similar taxes
• Other charges clearly disclosed before purchase

Any applicable buyer’s premium or transaction fee will be shown on the Lot listing or before final confirmation.

Buyers are responsible for taxes associated with their purchases unless CLCT is required to collect and remit them.

Users claiming a tax exemption must provide valid documentation before the transaction is completed or within any period permitted by CLCT.

International buyers are responsible for customs duties, import taxes, brokerage charges and compliance with import restrictions.

7. Payment

You authorize CLCT and its payment providers to charge the payment method associated with your account for amounts you owe.

Unless the listing or invoice states otherwise, payment is due immediately upon purchase.

For auction invoices that are not charged immediately, full payment must be received within three calendar days after the invoice is issued.

CLCT may withhold shipment, possession or payout until payment has cleared.

Title does not pass to the buyer until the full amount due has been received in cleared funds.

CLCT may decline a payment that:

• Comes from an unauthorized third party
• Cannot be verified
• Presents an elevated fraud or chargeback risk
• Violates payment-provider rules or applicable law

Failure to pay

If you fail to pay when due, CLCT may:

• Charge the authorized payment method on file
• Cancel the transaction
• Suspend or terminate your account
• Retain an authorized deposit to the extent permitted by law
• Offer the Lot to another bidder
• Resell the Lot
• Recover the reasonable difference between your purchase obligation and the net resale proceeds
• Recover reasonable collection costs where permitted by law

You are not entitled to any profit from a resale following your default.

CLCT will not impose a penalty or collection charge unless it is disclosed in advance and permitted by applicable law.

8. Listings, Condition and Authenticity

8.1 Seller information

Listings may include descriptions, photographs, dimensions, provenance, grading information, condition reports and other information supplied by sellers or third parties.

Sellers are responsible for ensuring that their listing information is accurate and that they have the legal right to sell the Lot.

8.2 Inspection

Collectibles may show age, use, wear, restoration, manufacturing variations or other imperfections.

Photographs and condition descriptions may not reveal every characteristic of a Lot. Screen settings, lighting and photography may also affect appearance.

You are responsible for reviewing the entire listing and asking questions before bidding or purchasing.

8.3 Third-party grading and authentication

When a Lot has been graded or authenticated by a third party, the grade or authentication is the opinion of that third party.

Unless CLCT expressly provides its own written guarantee:

• CLCT does not guarantee a third-party grade
• CLCT does not guarantee that another grading company will reach the same conclusion
• A later change in a third party’s opinion does not automatically cancel the sale
• Claims covered by a grading company’s guarantee should be directed to that company

8.4 Materially not as described

A buyer must notify CLCT at team@houseofnaka.com within 3 calendar days after confirmed delivery if the buyer reasonably believes that the Lot:

• Is materially different from the listing
• Is counterfeit
• Is not the item purchased
• Arrived materially damaged beyond the disclosed condition

The buyer must provide photographs and any reasonably requested supporting information and must retain the Lot and packaging during review.

CLCT may require the Lot to be returned in the same condition received before issuing a refund.

This review does not cover:

• Buyer’s remorse
• Minor condition differences
• Differences visible in the listing photographs
• Differences of opinion regarding grade, quality or market value
• A decline in value
• A third-party grader changing its opinion
• Damage occurring after delivery
• Claims submitted after the stated period

CLCT may determine an appropriate resolution based on the evidence, applicable law and the circumstances of the transaction.

Nothing in this section limits rights that cannot legally be waived.

9. Final Sales and Cancellations

Except for an approved materially-not-as-described claim or a right required by law, all bids and completed sales are final.

CLCT may cancel or correct a transaction when reasonably necessary because of:

• A clear pricing, listing or calculation error
• A duplicate or mismatched listing
• A material system failure
• Fraud or unauthorized account use
• Payment failure or chargeback risk
• The seller’s inability to transfer lawful title
• A credible authenticity concern
• A legal or regulatory restriction
• Loss or material damage before shipment

When CLCT cancels a transaction through no fault of the buyer, the buyer’s remedy will ordinarily be a refund of the amount paid.

10. Shipping, Delivery and Risk of Loss

Shipping methods, charges and estimated timing will be disclosed during checkout, on the invoice or through transaction communications.

The seller, CLCT or an approved shipping provider may fulfill the shipment, depending on the Lot.

Buyers must provide a complete and accurate delivery address.

CLCT may require tracking, insurance, identity verification or an adult signature.

Unless applicable law requires otherwise, risk of loss passes to the buyer upon confirmed delivery to the address provided by the buyer.

The buyer must promptly report visible shipping damage, loss or delivery problems and preserve all packaging and supporting evidence.

Delivery estimates are not guarantees. CLCT is not responsible for reasonable carrier, customs or weather delays outside its control.

11. Sellers

In addition to this User Agreement, sellers may be required to accept a separate Seller or Consignment Agreement.

A seller represents and warrants that:

• The seller owns the Lot or is authorized to sell it
• The seller can transfer good title free of undisclosed claims or liens
• The Lot is authentic to the best of the seller’s knowledge
• The listing is accurate and not misleading
• The Lot does not infringe intellectual-property rights
• The sale does not violate any law
• The seller will complete the transaction after a valid sale
• The seller will comply with shipping and fulfillment requirements

CLCT may delay a seller payout during fraud, authenticity, return, chargeback or delivery review.

12. Marketplace Integrity

CLCT may take reasonable action to maintain a fair marketplace, including:

• Reviewing bids and transaction patterns
• Requesting identity or payment verification
• Removing misleading or prohibited listings
• Restricting bidding or selling privileges
• Canceling fraudulent or technically corrupted transactions
• Cooperating with payment providers and lawful government requests

CLCT will not knowingly permit sellers, employees or representatives to place undisclosed bids intended solely to increase the price of a Lot.

13. Intellectual Property and User Content

CLCT and its licensors own the Services, software, branding, interface and original platform content.

You may not copy, reproduce, distribute, reverse engineer or commercially exploit those materials except as permitted by law or with CLCT’s written authorization.

When you submit listing photographs, descriptions, reviews or other content, you retain any ownership rights you have.

You grant CLCT a worldwide, non-exclusive, royalty-free license to host, reproduce, display, format, distribute and promote that content for the operation and marketing of the Services.

You represent that you have the rights necessary to provide that content.

CLCT may remove content that violates this User Agreement or applicable law.

Copyright complaints may be sent to:

Bitcoin Culture Hub
40 N 4th St, Brooklyn, NY 11222
team@houseofnaka.com

14. Privacy and Communications

Our collection and use of personal information is governed by the CLCT Privacy Policy.

You agree that CLCT may send you transactional communications concerning:

• Account activity
• Bids and auction status
• Purchases and payments
• Shipping and delivery
• Security and verification
• Changes affecting the Services

You may opt out of marketing communications, but not communications necessary to operate your account or complete transactions.

15. No Investment Advice

Collectibles may increase or decrease in value.

CLCT does not provide legal, tax, investment or financial advice. Listing prices, prior sales, estimates, rankings and marketplace data are informational only and do not guarantee value, liquidity or future performance.

You are responsible for independently evaluating each purchase or sale.

16. Service Availability

CLCT does not guarantee that the Services will always be uninterrupted, secure or error-free.

Bids and notifications may be delayed by connectivity problems, device issues, system maintenance or events outside CLCT’s reasonable control.

You remain responsible for monitoring auctions in which you participate. Notifications are a convenience and are not a substitute for checking the Services.

17. Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICES ARE PROVIDED “AS IS” AND “AS AVAILABLE.”

CLCT DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, EXCEPT TO THE EXTENT SUCH WARRANTIES CANNOT LEGALLY BE DISCLAIMED.

EXCEPT FOR EXPRESS COMMITMENTS IN THIS USER AGREEMENT, CLCT DOES NOT WARRANT:

• UNINTERRUPTED ACCESS TO THE SERVICES
• THE FUTURE VALUE OR LIQUIDITY OF A LOT
• THAT EVERY LISTING ERROR WILL BE DETECTED
• THE OPINIONS OF THIRD-PARTY GRADERS OR AUTHENTICATORS
• THE CONDUCT OR PERFORMANCE OF ANOTHER USER

Some jurisdictions do not allow certain warranty disclaimers, so portions of this section may not apply to you.

18. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, CLCT AND ITS OFFICERS, DIRECTORS, EMPLOYEES, CONTRACTORS AND AGENTS WILL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, REVENUE, DATA, GOODWILL OR BUSINESS OPPORTUNITY.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, CLCT’S TOTAL LIABILITY ARISING FROM A PARTICULAR TRANSACTION WILL NOT EXCEED THE GREATER OF:

• THE FEES PAID TO CLCT FOR THAT TRANSACTION; OR
• $100.

The preceding transaction limit does not limit CLCT’s obligation to return money that CLCT is expressly required to refund under this User Agreement.

These limitations do not apply to liability that cannot legally be limited.

19. Disputes Between Users

CLCT may assist with communication or review between users but is not obligated to adjudicate every dispute.

Except for obligations expressly assumed by CLCT, users are responsible for claims arising from their own listings, purchases, shipments and conduct.

Nothing in this section prevents CLCT from issuing a refund, reversing a payout or taking account action under this User Agreement.

20. Indemnification

To the extent permitted by law, you agree to indemnify and hold harmless CLCT and its officers, directors, employees, contractors and agents from third-party claims, losses and reasonable legal expenses arising from:

• Your violation of this User Agreement
• Your violation of law or a third party’s rights
• Content or property you submit or list
• Your fraud, willful misconduct or material negligence
• Your failure to complete a transaction
• A chargeback or payment reversal caused by your conduct

CLCT will provide reasonable notice of a covered claim and allow you to participate in its defense.

21. Dispute Resolution

Before filing a formal claim, you and CLCT agree to provide written notice describing the dispute and requested resolution and to attempt in good faith to resolve it for at least 30 days.

Notices to CLCT must be sent to:

Bitcoin Culture Hub
40 N 4th St, Brooklyn, NY 11222
team@houseofnaka.com

This User Agreement is governed by the laws of the State of Delaware without regard to conflict-of-law principles.

Any dispute not resolved informally must be brought in the state or federal courts located in Delaware, USA, except that either party may bring an eligible individual claim in small claims court.

To the extent permitted by law, each party waives trial by jury.

22. Suspension and Termination

You may stop using CLCT at any time, provided you remain responsible for outstanding bids, purchases, fees and other obligations.

CLCT may restrict, suspend or terminate access when reasonably necessary to:

• Protect users or the Services
• Investigate suspected misconduct
• Comply with law
• Address unpaid amounts
• Enforce this User Agreement

Termination does not eliminate obligations or rights arising before termination.

23. Changes to These Terms

CLCT may update this User Agreement from time to time.

Material changes will apply prospectively and will be communicated through the Services, by email or by another reasonable method.

Changes will not alter a completed transaction unless required by law or agreed by the affected parties.

Continued use of the Services after an updated agreement becomes effective constitutes acceptance of the updated agreement.

24. General Terms

If any provision is found unenforceable, the remaining provisions will remain effective.

CLCT’s failure to enforce a provision is not a waiver.

You may not assign your rights or obligations under this User Agreement without CLCT’s written consent.

CLCT may assign this User Agreement in connection with a merger, financing, reorganization or sale of the business.

This User Agreement, the Privacy Policy, applicable listing terms and any separate Seller Agreement constitute the agreement between you and CLCT concerning the Services.

Sections that by their nature should continue, including payment obligations, intellectual property, disclaimers, limitations of liability, indemnification and dispute provisions, survive account closure or termination.

25. Contact

Bitcoin Culture Hub
40 N 4th St, Brooklyn, NY 11222
team@houseofnaka.com