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 QUEZON Award a ₱4.3M contract to V.S. CERDON IRON WORKS & CONSTRUCTIONCities
Transaction hash:
e789a3c19e16556737fac4ab2a82d08480520a9bd8693636d78f4be00a7b4dec
Status:
Included and unchanged
Block:
#2,655 3,358 blocks after it
Position in block:
Transaction 200 of 223
Award day:
Feb 3, 2016 (10 yrs 9 mo ago)
From:
Value:
₱4,314,193.05
Project:
15-24012
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 #2,655 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 QUEZON awarded it to V.S. CERDON IRON WORKS & CONSTRUCTION on 2016-02-03.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 Quezon City gave a "unmodified" 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 e789a3c19e…7b4decnow …
- 2. Block Merkle root changedstored f72d99243b…d19353now …
- 3. Block #2655 hash changedstored 3067ee0aa4…40b046now …
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 222 records. Each step hashes the current value together with the sibling shown.
- leaf e789a3c19e16556737fac4ab2a82d08480520a9bd8693636d78f4be00a7b4dec
- 01 R e881e7e7d822523a35b3b62525b7444bb0d95bfd90b28c6a29f9d6d07d2d9cc7
- 02 R fa64ec0646e4bb50a0671a60b35bb469bf71f1e312b554c307b60968a2582961
- 03 R 7ed0f320544af87bb7086fbd072ad455c750449209ddda3e89ea2d76115a3d59
- 04 L 4e407de65427435c3877fe4db014c087adbcef84103b2c8f66855fbd09825aa1
- 05 R 91b3b0aee62b32d3b481bb21a0601d058c07fee492e723ec4d2e1585d797b7ca
- 06 R 41c01ad467a1641b929b6e15e44d347da33e93dbd7112915e095614e6d82113c
- 07 L fc2491e24a6eccfc74d0ea6938119e8299aaece2cc2be96daefdffcb9e330509
- 08 L b635a23d7adc6607445bd5fa47b0c012cf6b46fa2a460e51c386dc3832a7af69
- root f72d99243bb91555668fd343d9f82988eb723705974d1df48afc2c6bd3d19353