Arcrypt
A private auction for one-of-a-kind items
List art, a collectible, or any single rare item. Bids stay sealed until the sale closes.
Nobody can see your bid.
Sell one item. Get its real price.
List anything you only have one of: a painting, a signed card, a piece of DAO treasury. People bid without seeing each other’s offers. The highest bid wins and pays, everyone else gets refunded automatically.
List it
Set a minimum price and a deadline. Takes a couple of minutes.
People bid privately
Nobody, not other bidders, not us, sees a bid until the auction ends.
Highest bid wins
The winner pays, you get paid, everyone else is refunded automatically.
One-of-one access pass to the alpha program. Highest bid wins when it closes. Every other bid stays sealed and gets refunded.
Refresh, refund, or reclaim depending on auction state.
LiveCreated by an Oxford electrical engineering undergraduate
We solved an open problem in cryptography
On a public blockchain, a bid is never private. The instant it lands, bots read it and front-run you. Rivals see your ceiling before you've finished typing it. What should be an auction becomes a leak, one bid at a time.
One item, one winner
Not for token launches or fundraises, plenty of platforms do that already. This is for the other kind of sale: you have exactly one thing, and you want its real price without a crowd watching each other’s offers.
Anything with exactly one buyer at the end: a piece of art, a rare card, a limited-run item. List it, set a floor, and let people bid without seeing each other's offers. The winner and price are the only things anyone ever sees.
A DAO votes to sell a treasury item, art, an NFT, equipment, without publishing the reserve price before the vote even passes. Plugs straight into Realms governance.
A house. A graded trading card. A single .sol domain. The kind of sale where there's only one of the thing, and a fair price only shows up if nobody can see the other bids. The rails to list these already exist on Solana. The sealed sale doesn't, yet.
Same idea, off-chain settlement, for procurement and deals that were never going to be public anyway.
Real-world, one-of-a-kind assets already trade on Solana. A sealed sale for them doesn’t exist yet.
Same sealed bid, a faster clock
10–30 minute sealed-bid windows on lower-value items, run several at once. Still a real sale of a real item at close, just a lot more of them.
Reserve not met just means it doesn’t sell, nobody pays anything. Relist straight into the next window instead of waiting days for another shot.
Lose within a small margin of the winning bid and the refund fee comes back as credit toward your next lot.
A super simple SDK
DAO treasury proposals
Same SDK, wrapped as a Realms governance proposal for DAOs selling a treasury item.
Governance proposal
Pick a realm, load treasury accounts, and prepare a sealed-auction proposal in one place.
The preview is over. Alpha is next.
The protocol works end to end on devnet. Alpha is where it gets used, broken, and hardened before mainnet.