Zcash has long demonstrated its technological value through shielded transactions, yet the community still asks: “Where can we truly spend ZEC on a daily basis?”
Peer-to-peer marketplaces like OLX or eBay showcase a global demand for a simple model where people sell goods directly to each other, with the platform acting as a trusted intermediary.
However, traditional solutions suffer from two major drawbacks:
Dependence on banking payment systems,
Lack of privacy.
Zcash has the opportunity to create an alternative: a private P2P marketplace with escrow protection, where all payments are made exclusively in ZEC.
Rationale
Utility for ZEC: enabling real-world everyday use as a payment method.
Privacy: all payments are shielded by default.
Escrow as guarantee: protecting buyers and sellers from fraud.
KYC-lite approach: convenient for users without bank accounts while maintaining basic AML compliance.
Global scale: pilot launch in countries with strong P2P trading cultures (Latin America, Europe).
Technical Approach
Escrow Design (Refund-to-Specified)
When creating a deal, the buyer sends ZEC to escrow and specifies a shielded Refund Address. If the deal is successful, funds go to the seller. In case of dispute or cancellation, the funds return to the refund address. This model is simple, transparent, and preserves full privacy by not requiring any “from address” analysis.
Payment Processing via BTCPay
Utilize BTCPay Server customized for shielded ZEC acceptance. This provides transparent invoice management, easy platform integration, and future scalability.
Logistics
For MVP: integrate with API of international postal services (DHL/UPS). For scaling: add local operators.
Risks & Mitigation
Legal / AML:
Whitelist permitted product categories.
KYC-lite with limits ($700/day, $10k lifetime).
Legal consulting focused on e-commerce and crypto regulations.
Future transition to DAO-based escrow to reduce custodial risks.
Security:
Use BTCPay as the foundation for escrow logic.
Potential audit by Zcash ecosystem Security Lead.
Adoption:
Launch through local Zcash communities in LatAm and Europe.
Marketing in crypto media and collaboration with Web3 Privacy ecosystem.
About Me
I am an OSINT specialist and ambassador for privacy projects including Nym, Zcash, and Web3Privacy. My experience lies in educational efforts around cybersecurity, digital privacy, and financial literacy.
The idea for this project emerged after consultations with the OLX Ukraine team, where we discussed trust and protection challenges in P2P trading. This inspired the vision of Zcash as a basis for a private escrow marketplace.
Questions
Is the idea of an international P2P marketplace with escrow on ZEC interesting to the Zcash community?
Do you see potential for adoption through such a product?
Could this be financed via Zcash Community Grants?
Would any community members be interested in joining the team as a technical specialist, legal advisor, or consultant?
I am eager to hear the community’s technical and legal feedback. This idea aims to create a new real-world use case for ZEC, and it would be wonderful to build it together.
I’m developing a browser-based, peer-to-peer marketplace designed for privacy and decentralization. It uses cryptography and zcash payments. I’ve been working on it for over two years, and I aim to launch it before christmas.
Key features:
No installation needed — the entire marketplace runs in the browser
A dashboard for shop owners (admin) and a separate interface for buyers
Orders are sent in encrypted form, paired with a Zcash payment via Zcash memos
An escrow system holds funds for two weeks to protect both parties
After each transaction, buyers can leave feedback and rate the store
Chat would be very useful feature, but my focus is now on the working marketplace. It can surely happen in the future, it is technically possible to exchange messages between peers, but not everybody is connected to the particular store you are buying from. That means messages would have to propagate across the network. To explain briefly: when you connect to the network, you aren’t connected directly to the store owner; you connect to random peers who share the store’s data. The store owner doesn’t even need to be online. Cryptography ensures that all peers distribute the authentic version of each store, preventing any malicious participant from altering it.
That’s very impressive, well done. When I was considering this project, I sketched out what it might look like from the inside; you are welcome to use it.
Quick question about the escrow mechanism. The merchants and the customers put their funds in escrow. What prevents the Zcash Marketplace operator from declaring some kind of fake “hack” and taking the funds?
CrowdStore’s escrow mechanism relies on a Payment Service Provider (PSP) - a software connected to zcash blockchain, that receives the funds and temporarily holds customer and merchant funds until transaction conditions are met—typically 14 days or upon the buyer leaving a review. The marketplace operator does not directly control these funds; instead, the PSP automatically releases them according to pre-defined rules, returning 97% to the merchant, 2% to the buyer as an incentive, and 1% to the platform. In the event of a dispute, funds can be frozen until resolution, and if a store is unresponsive, the full payment is refunded to the buyer once a review is submitted. Because of this structure, the operator cannot simply “declare a hack” and seize funds without undermining the PSP’s automated process and public record of transactions.
The compensation mechanism is also interesting if the ZEC rate changes. For example, the buyer would need to pay extra if the price changed by more than 5% during those two weeks. What do you think?
All your comments are valid, I am very happy that you have these questions, and I am also happy to let you know that I’ve already solution in place
Exchange rate fluctuation is a real problem for the store owner. But it cannot be put on the buyers shoulders. The price can go down, indeed. But it can go also up. That would bring unnecessary complications. So it is solved in CrowdStore in a special way.
Shop owner can purchase a service which will protect them.
Here is screenshot from CrowdStore admin area:
Note that the price mentioned (1 ZEC per month) is a placeholder for now, it will need to be adjusted to a price which will be reasonable even for smaller stores. Especially now when ZEC prices skyrocketed, compared to last year average.
This feature is not yet fully functional though, but will be
Thank you @beyond very much for sharing your sketch. I can see several things for improvement in CrowdStore, for example the left filter bar, or the ability for feature listings. I’ll consider these for future releases. I also appreciate you posting this original forum topic, which motivated me to make crowdstore.net public. Thank you once again.
Escrow Design (Refund-to-Specified)
Payment Processing via BTCPay
Logistics
I am eager to hear the community’s technical and legal feedback. This idea aims to create a new real-world use case for ZEC, and it would be wonderful to build it together.
