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 ALVCO TRADING & CONTRACTORCities
Transaction hash:
decccd5dcbf0b5768b529b3ed79e64b8a44ab99c707c5c16dfd2a00efed5a8fd
Status:
Included and unchanged
Block:
#5,320 693 blocks after it
Position in block:
Transaction 398 of 460
Award day:
Nov 3, 2023 (3 yrs ago)
Value:
₱1,496,929.19
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 #5,320 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 ALVCO TRADING & CONTRACTOR on 2023-11-03.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 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 decccd5dcb…d5a8fdnow …
- 2. Block Merkle root changedstored 298b50e975…3f4d02now …
- 3. Block #5320 hash changedstored f3489c3744…587bdbnow …
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 459 records. Each step hashes the current value together with the sibling shown.
- leaf decccd5dcbf0b5768b529b3ed79e64b8a44ab99c707c5c16dfd2a00efed5a8fd
- 01 R e04f05271aba488eb5c51f316bf250408a79f518c4a3393036e26902b4382e39
- 02 L 0d4e0dc069e583117f8b04fd20b7730585aa0f1f7dbfce01c7e62276ca4491b9
- 03 L 93652998c50c69be242b4b4f45a9fd7a0d10db4d07e0a81fae00ee3ee63564e8
- 04 L a50a96d372bcfd68efd8b87047501024a41c1814678490bbe868d6c3966bc07d
- 05 R 8996b0c784a2c573c9326666dcccfa42a499adb1dccd236baa3b8e3b376ca35b
- 06 R eb760bed9d61eba7c9a0e433cb1688a30e8cd30aab3c2843e10e581c4f326c4b
- 07 R 64c290f5ef27c4f00a4026944bf67841733d88c36c2b4d398717d4a0fcefac51
- 08 L 2c29792c33fcb7c6c67330316ccede9a81452397c8757fa5edfb6d3228fa8255
- 09 L 0c154e996caa9815032b7349f6a062acd353f6753a20649dc05523470ab6a7e5
- root 298b50e9750e5c666919a6f9cad757e58bace99587ff5f83a85349de9c3f4d02