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 - SOUTH COTABATO DEO Award a ₱2.9M contract to GEMMA CONSTRUCTION SUPPLY INC.National agencies

Transaction hash:

8b20fd7546535627bbb9c779c3741c8f8d951ed5c98e9fc0d1f18e069b9fdc96

Status:

Included and unchanged

Block:

#1,347 4,666 blocks after it

Position in block:

Transaction 13 of 37

Award day:

Jan 11, 2012 (14 yrs 10 mo ago)

From:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - SOUTH COTABATO DEO

To:

GEMMA CONSTRUCTION SUPPLY INC.

Value:

₱2,864,339.58

Project:

11MG0075 - Preventive Maintenance along Midsayap - Marbel Road, Koronadal City Section, Km. 1792+895 - Km. 1793+005, Koronadal City, South Cotabato

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - SOUTH COTABATO DEO

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 #1,347 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 - SOUTH COTABATO DEO awarded it to GEMMA CONSTRUCTION SUPPLY INC. on 2012-01-11.
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 8b20fd7546…9fdc96now …
2. Block Merkle root changed
stored 7e4f09ef47…c466canow …
3. Block #1347 hash changed
stored d2be85d340…59c3dcnow …

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

Merkle proof (6 steps)

How this one record is tied to the block's Merkle root, without needing the other 36 records. Each step hashes the current value together with the sibling shown.

leaf 8b20fd7546535627bbb9c779c3741c8f8d951ed5c98e9fc0d1f18e069b9fdc96
01 L 896533b2da875ac7721d25db3686445c1c54862213c408dcff2a938d2d81ca0d
02 R e9329a5cfbc478bdb754ab28bde84e4de05fb5069c86594d3925c21de17c05c1
03 L a3c5f739cea802e4221ff5ed01225666289ca78e326f08a2c22a7098a8386091
04 L 756b28b62d34fc23a0cffd1e9d52eaa611a91b9cab48e5f0ec4461a72bde3b19
05 R fe2041e20df3f6c12ef36fa4b9e5514fcc1ed13df52a4b729ca4fe16df374874
06 R 77d89cdc6fc6237302d5a4ada0790e2ef0835391c5f50dbc8dbbbdd997b7feec
root 7e4f09ef4777a44a0a4f1e7137ecd3e097988464dd2ba8ff25d3a33c81c466ca