Deploy a tamper-proof procurement network where tender documents are sealed on-chain and bid evaluation runs automatically against fixed criteria. Cerulea Studio assembles it from the Procurement Ledger, Document Signing, and Escrow and Conditional Settlement modules, turning a fraud-prone paper process into an immutable lifecycle audit trail.
Turn a bid-rigging-prone paper tender into a sealed, automatically evaluated, fully auditable record.
01.
Anchor tender documents on-chain at publication. The Document Signing module seals every clause by its digest, so any change to specifications after award breaks the hash and is instantly detectable.
02.
Prevent bid leakage. Vendors commit an encrypted bid hash before the deadline and reveal after, so no bid can be seen, altered, or matched to a competitor while the window is open.
03.
Score bids without human tampering. The Procurement Ledger runs the published evaluation formula on revealed bids, producing a deterministic ranking that no evaluator can quietly override.
04.
Surface collusion from data. Repeated rotation of winners, identical markups, and shared vendor lineage across tenders are flagged automatically from on-chain bid history for investigator review.
05.
Tie payment to delivery. Escrow and Conditional Settlement holds contract funds and releases each milestone only when acceptance is signed, blocking payment on fictitious completion.
06.
Give the CVC one source of truth. Every publication, bid, evaluation, and award is timestamped and sealed, so a disputed tender is reconstructed in hours instead of a six-month investigation.
Follow a single tender from sealed publication through automated evaluation to conditional award and settlement.
10:05:12
[SYS] Sealing tender specification bundle...
10:05:12
[CMD] publishTender { id: "TND_2291", dept: "PWD", criteria: "L1_QCBS" }
10:05:13
[AUTH] Hashing 42 spec clauses and evaluation matrix...
10:05:13
[OK] Tender TND_2291 sealed at block 5512090.
Cerulea decomposes public procurement into modular contracts. Each layer seals, commits, evaluates, and settles a tender without any single official controlling the record.
Sealed, auditable procurement is a horizontal capability. Here is how different public buyers put the tamper-proof tender ledger to work.
Run high-value capital tenders on sealed bidding with automated evaluation, so award decisions rest on a deterministic on-chain ranking that survives audit and vigilance review.
Key Asset Types
Publish works and supply tenders with sealed specifications and conditional escrow, cutting post-award scope manipulation and inflated running bills across departments.
Key Asset Types
Query the immutable trail directly to reconstruct any tender, cross-check cartel flags, and resolve complaints against signed evidence instead of reconstructing paper files.
Key Asset Types
Whether you are bridging a legacy e-procurement portal or onboarding vendors through wallets, Cerulea routes both into one sealed tender ledger.
For existing government e-procurement portals. Tender events and bids are translated into sealed on-chain commitments through the API gateway without replacing the front-end vendors already use.
e-Procurement Portal
Department Systems
Cerulea API Gateway
Bid Sealing & Hashing
Cerulea Private Chain
Consortium Procurement Ledger
For vendors submitting directly. A wallet-signed portal seals each bid commitment and routes it straight to the ledger, with reveal and evaluation executed on-chain.
Vendor Portal / Wallet
Bidder Devices
Consortium Validators
Bid Consensus
Cerulea Ledger
Sealed Tender Record
Building a sealed-bid procurement network with automated evaluation, cartel detection, and conditional escrow from scratch requires specialised engineers and long integration cycles. Calculate your exact deployment speed using Cerulea.
Traditional Deployment
Solidity Coding & Audits
~ 13 Months
Visual Compilation
WASM Logical Artifacts
~ 4 Weeks
The legacy timeline reflects public-sector e-governance integration benchmarks. Building sealed-bid logic, wiring an evaluation engine, and hardening a conditional escrow layer for an average procurement network takes a baseline of 8 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your tender and evaluation rules into pre-audited WebAssembly binaries and provisions the shared procurement ledger instantly.