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FY2026 GAA: ₱6.79T
PisoScan
DemoFor public education only. These blocks are built by PisoScan from published PhilGEPS records to show how a budget ledger like CADENA would work. No government agency created or signed them, and this is not an official ledger. How it works

Transaction details

API
Transaction action

DPWH-LAGUNA II DISTRICT ENGINEERING OFFICE Award a ₱28.0M contract to C.B. TAMPENGCO CONSTRUCTION & SUPPLYNational agencies

Transaction hash:
cdbaa16dc70201d9c15cfcc61d03459892afdeeffeb2fcce95703583fd420192
Status:
Included and unchanged
Block:
#2,356 3,657 blocks after it
Position in block:
Transaction 133 of 161
Award day:
Mar 20, 2015 (11 yrs 7 mo ago)

Accountability

Bill Sec. 3 and 19
Accountable officer:
Not stated in the source. PhilGEPS does not publish who certified the award.
Certification:
Not certified No agency signed this record. Under CADENA the accountable officer would sign it with their own key.
Demo signature:
Block #2,356 signature valid Demo key, proves nothing about the governmentPublic key

Linked records: from budget to payment

Bill Sec. 5
  1. 1. Appropriation
    GAA line item · Sec. 5(b)
    The award does not say which budget line pays for it.
    Not published
  2. 2. Allotment release
    SARO / allotment · Sec. 5(c)(iii)
    Not published per project. DBM releases SAROs, but not linked to individual contracts.
    Not published
  3. 3. Cash allocation
    Notice of Cash Allocation · Sec. 5(c)(iv)
    Not published per project.
    Not published
  4. 4. Contract award
    Notice of Award (PhilGEPS) · Sec. 5(d)
    DPWH-LAGUNA II DISTRICT ENGINEERING OFFICE awarded it to C.B. TAMPENGCO CONSTRUCTION & SUPPLY on 2015-03-20.
    Found
  5. 5. Contract & progress
    Contract / progress report (DPWH) · Sec. 5(d)
    No matching DPWH contract record (only DPWH contracts are listed with progress).
    Not published
  6. 6. Payment
    Disbursement voucher · Sec. 5(c)(viii)
    Not published. No public source shows how much of this contract has been paid.
    Not published
  7. 7. Completion
    Certificate of completion · Sec. 5(d)
    No completion certificate published.
    Not published
  8. 8. Audit
    COA annual audit report · Sec. 5(e)(iii)
    No COA finding linked to this contract.
    Not published

1 of 8 documents found, 0 partly. Under CADENA every step would be published within 7 working days and linked to this record.

Tamper test: try changing this record

Demo

Edit the amount as if someone quietly changed the record. Your browser re-hashes it and walks up the chain. Nothing is saved.

  1. 1. Record fingerprint changed
    stored   cdbaa16dc7…420192now      …
  2. 2. Block Merkle root changed
    stored   73f71a332d…e766ffnow      …
  3. 3. Block #2356 hash changed
    stored   35fae5c2aa…c7416bnow      …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.

Merkle proof (8 steps)

How this one record is tied to the block's Merkle root, without needing the other 160 records. Each step hashes the current value together with the sibling shown.

  1. leaf  cdbaa16dc70201d9c15cfcc61d03459892afdeeffeb2fcce95703583fd420192
  2. 01 L cd34d0a1c8e07d0b318a4328452b994c60a14790695a70896d7735898f8a2b41
  3. 02 R f8a545c2a5a61f09d04bfe35250ea48a89363339b851d4214f6914dd8195af7f
  4. 03 L a0335e1eabcf170f0237fc3098a2940abc3ab28ec925292f7c9ca8b5e6b99600
  5. 04 R 1b75b246144988e20a6fa467602d7aff14b1436f12259b8a7a2db4dd2625aed5
  6. 05 R 8c2cf3a2c83dca64270b3a08df243fe2481681b03cd89bc6f471c3433c2809ef
  7. 06 R e594a05f2c87619caf809df7a3956b554336f421ada2931d7698c8b32233d872
  8. 07 R 5123ecf672301a957d132bfeb1c7e1b9b62fa87972e913629c1d289e999905b1
  9. 08 L ced23797414e20df12c77db670fc20ed72195b3e0acff6a276590830ac9ec114
  10. root  73f71a332d04c4c0000809e6b4766086c505e2e9fb2ab034052afdfb4be766ff