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

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR Award a ₱4.9M contract to MELANZA CONSTRUCTION & SUPPLYCities

Transaction hash:

48e12b14c2a94ceebfdc7d6940abeaa23e68999d25bb57853ba48dd927f54bf1

Status:

Included and unchanged

Block:

#1,328 4,685 blocks after it

Position in block:

Transaction 11 of 50

Award day:

Dec 21, 2011 (14 yrs 10 mo ago)

From:

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR

To:

MELANZA CONSTRUCTION & SUPPLY

Value:

₱4,868,104.32

Project:

Rehabilitation/Improvement of Vitali Health Center and Lying-In Clinic (formerly Mini-Hospital) at Vitali

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR

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 #1,328 signature valid Demo key, proves nothing about the governmentPublic key

Linked records: from budget to payment

Bill Sec. 5

1. Appropriation
GAA line item · Sec. 5(b)
The award does not say which budget line pays for it.
Not published
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. Cash allocation
Notice of Cash Allocation · Sec. 5(c)(iv)
Not published per project.
Not published
4. Contract award
Notice of Award (PhilGEPS) · Sec. 5(d)
CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR awarded it to MELANZA CONSTRUCTION & SUPPLY on 2011-12-21.
Found
Open
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. Payment
Disbursement voucher · Sec. 5(c)(viii)
Not published. No public source shows how much of this contract has been paid.
Not published
7. Completion
Certificate of completion · Sec. 5(d)
No completion certificate published.
Not published
8. Audit
COA annual audit report · Sec. 5(e)(iii)
COA's CY2024 audit of City of Zamboanga gave a "qualified" opinion on its financial statements (not specific to this contract).
Partly
Open

1 of 8 documents found, 1 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.

Contract amount (₱)

1. Record fingerprint changed
stored 48e12b14c2…f54bf1now …
2. Block Merkle root changed
stored e76ecf23f8…aec395now …
3. Block #1328 hash changed
stored 088ab83b0b…874bf4now …

Chain intact. The record matches its fingerprint, so the block and every block after it still line up.

Merkle proof (6 steps)

How this one record is tied to the block's Merkle root, without needing the other 49 records. Each step hashes the current value together with the sibling shown.

leaf 48e12b14c2a94ceebfdc7d6940abeaa23e68999d25bb57853ba48dd927f54bf1
01 L 45662882c92196404da82291c7d9335a56d049a2ca01149f93fcd35067474295
02 L af1b14103048f5a2cbb6f89252ddce61df129cfcf85d877157e0bb5acdaa4e70
03 R 1850a5d5a08c71a98ded357314fddf16d258d9d869455ba16ad8d5152f466fee
04 L bfc3a5d5577cedccbce5523ce3a21f6d8a73ac8eb95b0cf3128dc17d3cfdd959
05 R 1509652069f4f93584a4a1d7049b00d93bda4a0df7febbdd483671ac9b30b08f
06 R 3234ac56b0dc4380574c1399ebb930170c2d97c0253a8cda8bd54ff66549ce2b
root e76ecf23f8885f389306a836a3dcc9f0999eafe96718a69bcf971dee19aec395