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 VIGAN, ILOCOS SUR Award a ₱279.9K contract to ELKAN ENGINEERING SERVICES & GENERAL MERCHANDISECities
Transaction hash:
ff0e76d46b3f2dbf9206ef19aa12b2c9c37d6d7fb0439f216ac8c1e34d1cf7eb
Status:
Included and unchanged
Block:
#1,537 4,476 blocks after it
Position in block:
Transaction 23 of 24
Award day:
Aug 20, 2012 (14 yrs 2 mo ago)
Value:
₱279,900.72
Project:
Construction of Maritime Headquarters at Brgy. Mindoro, Vigan City
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 #1,537 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 VIGAN, ILOCOS SUR awarded it to ELKAN ENGINEERING SERVICES & GENERAL MERCHANDISE on 2012-08-20.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 Vigan 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 ff0e76d46b…1cf7ebnow …
- 2. Block Merkle root changedstored ab8dc75835…21c6f2now …
- 3. Block #1537 hash changedstored a69901193a…9b9564now …
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 23 records. Each step hashes the current value together with the sibling shown.
- leaf ff0e76d46b3f2dbf9206ef19aa12b2c9c37d6d7fb0439f216ac8c1e34d1cf7eb
- 01 L faade93e4ecb3f0a7143c3a63c2efce8d0594e53de5a02b8a1c2c5f015bca288
- 02 L 112013b1a4964904984fca42e06c8eee7cb9605146f2a6f7a3e83bf3603b351c
- 03 L 88633f135330b3909346c85d51b7d42343f099b8ebd172233e7cb082c08c7c12
- 04 R ccf2242bafbdf2278071651f72a267d4b7db1cba934814666ef543bddc2ef5ba
- 05 L a701499e3a9bdf40a96cff70ac18a28a51863ca8849e85bb341d009c78b32d07
- root ab8dc75835f3d03529f93a1ea74b2067661e08416b47ecf237fc529c1421c6f2