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 TAYABAS, QUEZON Award a ₱497.8K contract to TAN TAY LIM BUILDERS AND GENERAL CONTRACTORCities
Transaction hash:
4bc072cb58293b70d7ee68ca362aab648b9bd81e7e40108ff1ab6fe9a07d34ca
Status:
Included and unchanged
Block:
#1,266 4,747 blocks after it
Position in block:
Transaction 6 of 24
Award day:
Oct 12, 2011 (15 yrs 1 mo ago)
Value:
₱497,798.29
Project:
PROCUREMENT OF WORKS ON PROJECT NO. 070 – Improvement/Concreting of Barangay Road of Lita
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 #1,266 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 TAYABAS, QUEZON awarded it to TAN TAY LIM BUILDERS AND GENERAL CONTRACTOR on 2011-10-12.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 Tayabas 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 4bc072cb58…7d34canow …
- 2. Block Merkle root changedstored a5003e8e9d…4996ffnow …
- 3. Block #1266 hash changedstored 264c000754…d63d63now …
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 23 records. Each step hashes the current value together with the sibling shown.
- leaf 4bc072cb58293b70d7ee68ca362aab648b9bd81e7e40108ff1ab6fe9a07d34ca
- 01 R 4db76ad12d21d09c84e47596fea7d67672c34b8478990aaada570b731d80226a
- 02 L 582e2b2f334954335d9ad48686dc8f88a4bc2bb0cf79a377abbb6ac578908325
- 03 L 4d408be1d9f65ba2e9b7a45535f3b8bbdf8fad298ddc3df36c40b0eaaeb39932
- 04 R 75e3f0324dccc9fd0524058bb200f0d689cf01e41e55be420f8266c017a48376
- 05 R 3cbd80a2d4db41e544b1eb09be48bfc5293e4bc14d8b37bc170abf8ad90e26e3
- root a5003e8e9d30e7262a629b1bacd32c0d2eaf5c246c110225336d59c5b74996ff