A solution must include
Completion requirements • A publicly accessible working website. • Users can list an item they have and describe what they would accept in exchange. • Users can discover possible trades and propose a swap. • Both parties can explicitly agree to the trade. • Supports local hand-off or shipped swaps, with the chosen process clearly explained. • Includes reporting and moderation tools. • At least 10 real test swaps completed. • Core project code is open source.
Rules • No fake trades created only to reach the threshold. • No sale or payment flow may be required for the core swap. • Do not expose participant addresses or other private information in the submission. • We may contact consenting test users to verify completion.
A submission only qualifies if every mandatory requirement is met. Evidence must be independently reviewable: a screenshot alone is not enough where a live URL, public transaction, source repository, original file or private verification can reasonably be supplied. We may ask for more evidence where authenticity is unclear. Fraudulent evidence, impersonation, unsafe conduct or manufactured activity invalidates the submission.
How it’s verified: Live website URL; Public source code repository; Video showing a complete listing-to-agreement flow; Evidence of at least 10 completed real test swaps, with personal details redacted; Short explanation of safety and dispute handling.
The first valid solution wins.
The first solution that meets every criterion wins. No end date: open until solved.
Money is held in 75-day rounds. If a round ends without a winner, everyone who added money gets their bounty money back on their card. A bounty under $50 is refunded instead of paid out.
Solved it? Built it? Found it?
Nobody has submitted yet. You could be first. Solutions stay private until a winner is chosen.
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