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
APITransaction action
CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR Award a ₱2.8M contract to NURBEN ENGINEERING AND BUILDING CONTRACTORCities
Transaction hash:
c8a51fdfbc8d38106650eaecd35ebd71dbb398b6fb4651d23f57b8aaff63200c
Status:
Included and unchanged
Block:
#1,140 4,873 blocks after it
Position in block:
Transaction 25 of 29
Award day:
May 11, 2011 (15 yrs 6 mo ago)
Value:
₱2,792,969.03
Project:
Construction of Slope Protection at Putik River
Full record:
Accountability
Bill Sec. 3 and 19Responsible agency:
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 #1,140 signature valid Demo key, proves nothing about the governmentPublic key
Linked records: from budget to payment
Bill Sec. 5- 1. AppropriationGAA line item · Sec. 5(b)The award does not say which budget line pays for it.Not published
- 2. Allotment releaseSARO / allotment · Sec. 5(c)(iii)Not published per project. DBM releases SAROs, but not linked to individual contracts.Not published
- 3. Cash allocationNotice of Cash Allocation · Sec. 5(c)(iv)Not published per project.Not published
- 4. Contract awardNotice of Award (PhilGEPS) · Sec. 5(d)CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR awarded it to NURBEN ENGINEERING AND BUILDING CONTRACTOR on 2011-05-11.Found
- 5. Contract & progressContract / progress report (DPWH) · Sec. 5(d)No matching DPWH contract record (only DPWH contracts are listed with progress).Not published
- 6. PaymentDisbursement voucher · Sec. 5(c)(viii)Not published. No public source shows how much of this contract has been paid.Not published
- 7. CompletionCertificate of completion · Sec. 5(d)No completion certificate published.Not published
- 8. AuditCOA 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
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
DemoEdit the amount as if someone quietly changed the record. Your browser re-hashes it and walks up the chain. Nothing is saved.
- 1. Record fingerprint changedstored c8a51fdfbc…63200cnow …
- 2. Block Merkle root changedstored d04fe1c549…a2dd9dnow …
- 3. Block #1140 hash changedstored 1613ca6076…156cb6now …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (5 steps)
How this one record is tied to the block's Merkle root, without needing the other 28 records. Each step hashes the current value together with the sibling shown.
- leaf c8a51fdfbc8d38106650eaecd35ebd71dbb398b6fb4651d23f57b8aaff63200c
- 01 L bbde8d720561167b0ccca4a8f1ede46afc0eeaa842bd5ca1b096616852390641
- 02 R 6265cc25080b1700ffa94f84c737b361c259d422f3a350ec54914872ca9c8076
- 03 R f419fde49587d371d776558b608e99a604bbbc7dadd2d1f071506bb9be46f893
- 04 L 6803af1f6e620f7dd2fd7531d6f8c7bffb72ba935dbdbdaeb5c3b305cd5a15d8
- 05 L 35d6445e99f722fadc4026149d33a930c14a69312e620b1bf9663409e4734609
- root d04fe1c5496c7616870c6fba5459b992796e43cb35e17d8c7472c4e867a2dd9d