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 ₱1.5M contract to DATZLAV CONSTRUCTIONCities
Transaction hash:
7e995ceed79d0e4690e456dce287b6fc38d582a108b2469c27340ae44f5de43e
Status:
Included and unchanged
Block:
#5,263 750 blocks after it
Position in block:
Transaction 153 of 339
Award day:
Sep 4, 2023 (3 yrs 2 mo ago)
Value:
₱1,493,509.59
Project:
Classrooms
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 #5,263 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 DATZLAV CONSTRUCTION on 2023-09-04.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 7e995ceed7…5de43enow …
- 2. Block Merkle root changedstored f233728269…1e41bbnow …
- 3. Block #5263 hash changedstored 1cdb8b34e5…0fd091now …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (9 steps)
How this one record is tied to the block's Merkle root, without needing the other 338 records. Each step hashes the current value together with the sibling shown.
- leaf 7e995ceed79d0e4690e456dce287b6fc38d582a108b2469c27340ae44f5de43e
- 01 L 7e9181c87094f37a77e5e7521eecfad8394f37c97b3ecbcca8e8cf88f6e30eba
- 02 R 3f1fee63e30641c37526defb5baa7ac1b86dbce2d376e12d929b3d5e0d3b7715
- 03 R 9c6fb216c8b46443d7be8ffae71e5258c593847de9d1294e345359ab772c1d98
- 04 L 84af9a36f2a792bcebceaa6f423f5821cf2dbbbbbe2742b26663e306d0204939
- 05 L 92b33f5395d62fb021e46efca4db97508e9a8876cd8d5e02dbfee84386d28b75
- 06 R ce10ee94dd7f81c080a8b7151c1d79e59bdf8019bac3fce2221a95b182796c7c
- 07 R ed9465f45085e414ff9ac480ddfca93052a51661e4f0e169c18d43aa7f8f4d35
- 08 L 35a685d0f462aebcdedaf96fef55e334430163d04a3f2c4e2562d802084c87f7
- 09 R 258061d008af13ab2f2c1eb9ff48087f9e74fa66920f69ba2bbaa97eb00d11fc
- root f2337282697ef79ef59890a64cf4e1fbc42263ef4d1cc6ff224332c3df1e41bb