Farcaster Marketplace but with auctions using collectibles.

Sell random electronics and other stuff.

Coordinate shipping in DMs.

Shipping address / doxxing might be the most tricky.

Yet another great use case for ZK solutions

ZK can’t help with shipping physical products lmao

Working on building zkTLS infra/products. A ruthless empiricist and meme connoisseur.

/opacity

and

/eulerlagrange

Why would it not be possible to use a ZK solution to allow someone to ship a physical item to another person, paid via crypto, without doxxing the recipient of the goods?

Bc someone has to slap the address on the package

Here's a solution that GPT thinks would work.

It took less time for it to come up with this idea than for me to explain the problem requiring a solution.

Is @eulerlagrange.eth being insufficiently imaginative in his response to the idea, or is GPT wrong?

𝗭𝗲𝗿𝗼-𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗦𝗵𝗶𝗽𝗽𝗶𝗻𝗴 (𝗻𝗼 𝗱𝗼𝘅𝘅𝗶𝗻𝗴!) 🚀📦

Problem:

Buyers want physical items anonymously.

Sellers ship without ever seeing buyers' addresses.


Solution (ZK-powered):

𝟭. 𝗭𝗞 𝗜𝗱𝗲𝗻𝘁𝗶𝘁𝘆 𝗟𝗮𝘆𝗲𝗿

Buyer creates a ZK-proof verifying purchase legitimacy without revealing identity/address.


𝟮. 𝗘𝘀𝗰𝗿𝗼𝘄 𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁

Crypto funds held securely; released upon confirmed delivery.


𝟯. 𝗗𝗲𝗰𝗲𝗻𝘁𝗿𝗮𝗹𝗶𝘇𝗲𝗱 𝗜𝗻𝘁𝗲𝗿𝗺𝗲𝗱𝗶𝗮𝗿𝘆

Fulfillment centers decrypt addresses via ZK-proof, label & ship anonymously.


𝟰. 𝗭𝗞 𝗔𝗱𝗱𝗿𝗲𝘀𝘀 𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻

Address encrypted, decryptable only with verified ZK-proof (no identity link).


Flow:
𝗕𝘂𝘆𝗲𝗿 → 𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗲𝗱 𝗔𝗱𝗱𝗿𝗲𝘀𝘀 → 𝗜𝗻𝘁𝗲𝗿𝗺𝗲𝗱𝗶𝗮𝗿𝘆 → 𝗔𝗻𝗼𝗻𝘆𝗺𝗼𝘂𝘀 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 → 𝗦𝗲𝗹𝗹𝗲𝗿 𝗣𝗮𝗶𝗱

𝗥𝗲𝘀𝘂𝗹𝘁:

Seller NEVER sees buyer’s address.

Buyer address NEVER publicly linked.

100% doxx-proof transactions!

GPT doesn't see any insurmountable issues

GPT doesn't see any insurmountable issues

https://farcaster.xyz/eirrann.eth/0x54d60032

This is exactly the crux of every crypto<>IRL interaction. 

There has to be some physical oracle that is a trusted agent to confirm and/or execute the IRL component. 

I agree that having the "middleman" be relatively blind is an interesting component to aid privacy. But the added cost of shipping to an intermediary location for routing seems pretty expensive to bootstrap unless we're talking about primarily pretty exclusive and high value items.

But that doesn't have to be anyone who is in a position to transmit the address to the seller