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 CALAMBA, LAGUNA Award a ₱491.8K contract to J.B. ALARCON ENTERPRISES & GEN. MERCHANT & CONTRACTORCities
Transaction hash:
6122f0ff2c2bc91f38faaf9a1087b25d865207823dc09decb5e12af178767365
Status:
Included and unchanged
Block:
#487 5,526 blocks after it
Position in block:
Transaction 13 of 25
Award day:
Dec 5, 2008 (17 yrs 11 mo ago)
Value:
₱491,838.17
Project:
I-2008-052 Improvement of Drainage Canal, Barangay No. 1
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 #487 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 CALAMBA, LAGUNA awarded it to J.B. ALARCON ENTERPRISES & GEN. MERCHANT & CONTRACTOR on 2008-12-05.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 Calamba 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 6122f0ff2c…767365now …
- 2. Block Merkle root changedstored f6e900db61…b981b1now …
- 3. Block #487 hash changedstored 850fbea7c3…b09367now …
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 24 records. Each step hashes the current value together with the sibling shown.
- leaf 6122f0ff2c2bc91f38faaf9a1087b25d865207823dc09decb5e12af178767365
- 01 L 5c58f500c7971532d22ef83eb202da1d02e88a94eabb86fdfacb789d730b1951
- 02 R 351856420ab6ea008cc45304aecb8e6984ebc71b64e72c95a390d54e0100636e
- 03 L bd891bea17668a9c4c5f13a03dc055f0e18603876e5691e25c94b688c33e421d
- 04 L f97c1f1a43c6b29b44edf61f22421d4ee7e9d6b2150bc2a0af5e8a157efe59b5
- 05 R bf3a9c2733a7ac01250bbc1d025f7a1c263a9cebe5ac1faf7b1301727162fc84
- root f6e900db616a4389bddd7ea009878334210728db9cb4864f60f2e467cbb981b1