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 ₱20.0M contract to J EVANGELISTA CONSTRUCTION SERVICESCities
Transaction hash:
364e334b5ba60f6c4258dfd3a3d54e920f1af4866d989d1825d45247a97af36f
Status:
Included and unchanged
Block:
#5,673 340 blocks after it
Position in block:
Transaction 73 of 394
Award day:
Nov 6, 2024 (2 yrs ago)
Value:
₱19,985,665.73
Project:
4STY 16CL School Building Ph. 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 #5,673 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 EVANGELISTA CONSTRUCTION SERVICES on 2024-11-06.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 364e334b5b…7af36fnow …
- 2. Block Merkle root changedstored c9608c81df…44f163now …
- 3. Block #5673 hash changedstored 45dfc140e4…2b7717now …
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 393 records. Each step hashes the current value together with the sibling shown.
- leaf 364e334b5ba60f6c4258dfd3a3d54e920f1af4866d989d1825d45247a97af36f
- 01 L 355b014d0379b809c78db4f8e19b395c25b36c3a97eec0ffb8f1248463b11461
- 02 R 5f5451a5ef212fff16943821765917b673538b9d769286f6dfe1f33ee4e5d8c1
- 03 R 6a843d379f492ee6f74958d1a8605d3471886976695be40229b830734cbfe57f
- 04 L 7e371e140b5ff94b703ab795addb6301afcdc77b507e57e62b8cb3c7adfba0e1
- 05 R ec8963dfe24fb079392f19fd585ab1700440aee5adb974d478348902a91db29c
- 06 R 060afed10efbc7711ca27508778ab83b090455f39f2a148ace0a29dbca30bdeb
- 07 L bf96455887d97d3e6cff9a023a477f1820801951f0f5f870d7f7c74ec03ed124
- 08 R 0ab06491256c1c85580405aac6a29f3d23023a7344fd9b232b5bb37f2198b555
- 09 R cf6088e2c144d44ff1ebb0c8078536f3227ac5682d0e47d72e1b80d3208ca1f5
- root c9608c81dfadf81f7ff7a81c63fe5f97bd37e7c7f406de38079d0268db44f163