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 ₱1.2M contract to YLL BUILDERSCities

Transaction hash:

abd12b840e09cb93a3b7e320810fb1be3f05a9b0c6605d92912d2b9ca2fef1d6

Status:

Included and unchanged

Block:

#899 5,114 blocks after it

Position in block:

Transaction 5 of 8

Award day:

Jul 5, 2010 (16 yrs 4 mo ago)

From:

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR

To:

YLL BUILDERS

Value:

₱1,190,832.53

Project:

Construction of Three (3) Footbridges / Slope Protection / Guard Railings (Cluster)

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 #899 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 YLL BUILDERS on 2010-07-05.
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 abd12b840e…fef1d6now …
2. Block Merkle root changed
stored 4dcd9ec159…8a0c38now …
3. Block #899 hash changed
stored dc797f70d1…fc9ef2now …

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

Merkle proof (3 steps)

How this one record is tied to the block's Merkle root, without needing the other 7 records. Each step hashes the current value together with the sibling shown.

leaf abd12b840e09cb93a3b7e320810fb1be3f05a9b0c6605d92912d2b9ca2fef1d6
01 L aa87294434f49998c8ac1337c2ad212797b96a955cfdc08b209e6fc20e90c950
02 R cba450e0f3684019bd1571c19917874e1954b1236c7608860dafcc1da6119921
03 L 4530c8855525582c424ae481fa3c9f8409f90f5604cba98ad02253e7ab140cf5
root 4dcd9ec1590e0c4aecf56c66faa003b47ba7c7016a25b2005c9fe843688a0c38