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

API

Transaction action

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - REGION XII Award a ₱19.3M contract to VICENTE T. LAO CONSTRUCTIONNational agencies

Transaction hash:

1f99d70cfde51938fd7e5dd05ffaae460748d057fad7d2ea6eb622c1432b9412

Status:

Included and unchanged

Block:

#174 5,839 blocks after it

Position in block:

Transaction 1 of 9

Award day:

Sep 17, 2007 (19 yrs 1 mo ago)

From:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - REGION XII

To:

VICENTE T. LAO CONSTRUCTION

Value:

₱19,290,807.43

Project:

Rehabilitation/Improvement of Digos-Makar Road Nagpan Section (Km 1617+200-Km 1618+400)

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - REGION XII

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 #174 signature valid Demo key, proves nothing about the governmentPublic key

Linked records: from budget to payment

Bill Sec. 5

1. Appropriation
GAA line item · Sec. 5(b)
The award does not say which budget line pays for it.
Not published
2. Allotment release
SARO / allotment · Sec. 5(c)(iii)
Not published per project. DBM releases SAROs, but not linked to individual contracts.
Not published
3. Cash allocation
Notice of Cash Allocation · Sec. 5(c)(iv)
Not published per project.
Not published
4. Contract award
Notice of Award (PhilGEPS) · Sec. 5(d)
DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - REGION XII awarded it to VICENTE T. LAO CONSTRUCTION on 2007-09-17.
Found
Open
5. Contract & progress
Contract / progress report (DPWH) · Sec. 5(d)
No matching DPWH contract record (only DPWH contracts are listed with progress).
Not published
6. Payment
Disbursement voucher · Sec. 5(c)(viii)
Not published. No public source shows how much of this contract has been paid.
Not published
7. Completion
Certificate of completion · Sec. 5(d)
No completion certificate published.
Not published
8. Audit
COA annual audit report · Sec. 5(e)(iii)
No COA finding linked to this contract.
Not published

1 of 8 documents found, 0 partly. Under CADENA every step would be published within 7 working days and linked to this record.

Tamper test: try changing this record

Demo

Edit the amount as if someone quietly changed the record. Your browser re-hashes it and walks up the chain. Nothing is saved.

Contract amount (₱)

1. Record fingerprint changed
stored 1f99d70cfd…2b9412now …
2. Block Merkle root changed
stored af63a8707f…395085now …
3. Block #174 hash changed
stored c3141be403…e3fa88now …

Chain intact. The record matches its fingerprint, so the block and every block after it still line up.

Merkle proof (4 steps)

How this one record is tied to the block's Merkle root, without needing the other 8 records. Each step hashes the current value together with the sibling shown.

leaf 1f99d70cfde51938fd7e5dd05ffaae460748d057fad7d2ea6eb622c1432b9412
01 L 108e5778a038d3896b9304eaffc148bf479da8637d8cc8163ede4d12ea315d0a
02 R b36f9690b3d59e0a5964481da16ff8e024b1ce802fcb513d57fc17e8b03f2564
03 R 40908063afec55a9900ea0622f0dd0f1496fb76c4ca22c6e04635c3903d9b34b
04 R 62f367a6d13fb6bf9d5219520477f0b93335ddf66c75eb9f1e058e57a628ac6d
root af63a8707fa1469e142bc200981e84b905ca54f44f8cf4a5c349e7f94f395085