Sealed-bid tenders
In a tender, trust depends on nobody seeing the bids early, not even the organiser. With Capschain each company seals its encrypted bid and they all open at once, at the set date and time.
II / IX Professional · Transparency
How it works in this case
- I
Each company creates a capsule
Bidders attach their offer and set the tender opening date as the unlock date.
- II
Sealed with proof of delivery
Each bid’s fingerprint is recorded on-chain: proof it was delivered on time and unchanged.
- III
Simultaneous opening
On opening day they all unlock at once, with no early access for anyone.
Why a blockchain capsule
No leaks between competitors.
Not even the organiser can open early.
Public proof of when each bid was submitted.
Every company submits its bid encrypted. On opening day they unlock at the same time, with no leaks and no early access for the organiser.
Frequently asked questions
Can the organiser see bids early?
No. Bids unlock at the same time on opening day, with no early access for the organiser.
How do you prove a bid was not modified?
Its cryptographic fingerprint was recorded on the blockchain when sealed. Any change would produce a different fingerprint.