Cryptographically sealed bids. Zero human bias. A smart contract picks the lowest price.
Officers create a public procurement tender with deadlines and minimum deposit. The tender document is stored on IPFS — permanent and tamper-proof.
Vendors commit a cryptographic hash of their bid price. Nobody — not even the system admin — can see the price. A security deposit locks commitment.
After the commit deadline, bidders reveal their actual price. The smart contract verifies each hash matches. No tampering is possible.
The smart contract selects the lowest bid. Ties break by earliest commit timestamp. No human picks the winner. Deposits refund to honest bidders.