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 - QUEZON 2ND ED Award a ₱45.1M contract to BROSTAN CONSTRUCTION AND DEVELOPMENTNational agencies

Transaction hash:

bb78c2a69782f65bfcb017bd982e42c38b46d66970400b9b4ad1c760b1a474b6

Status:

Included and unchanged

Block:

#1,830 4,183 blocks after it

Position in block:

Transaction 67 of 104

Award day:

Aug 12, 2013 (13 yrs 3 mo ago)

From:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - QUEZON 2ND ED

To:

BROSTAN CONSTRUCTION AND DEVELOPMENT

Value:

₱45,095,777.71

Project:

13DJ050(12DJ0116)

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS - QUEZON 2ND ED

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 #1,830 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 - QUEZON 2ND ED awarded it to BROSTAN CONSTRUCTION AND DEVELOPMENT on 2013-08-12.
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 bb78c2a697…a474b6now …
2. Block Merkle root changed
stored d22eb51d77…bfb478now …
3. Block #1830 hash changed
stored e084ce8e62…b04310now …

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

Merkle proof (7 steps)

How this one record is tied to the block's Merkle root, without needing the other 103 records. Each step hashes the current value together with the sibling shown.

leaf bb78c2a69782f65bfcb017bd982e42c38b46d66970400b9b4ad1c760b1a474b6
01 L ba342afeba03870ddcb835d1c1abc59739d689eb0e98ccbb4283d4fe31ad49c8
02 L bc8e1265571cf4c51533ecc18f37871799a7b0732d4549f6addef4222121c704
03 R 574dac8f43102e9829c941efbb7a40c014d23d541827735e938d93624deaf979
04 R 09d7d7586bedeaafa287b23e35e454e16cef0fe15b26c502db504cccec0c1cea
05 R 17a5d61e24bee83791aac6cba9a7f45c823022bfa57102d70f517afd01d41061
06 R 1c2e69a15a0f53921fef9fd73260634b96cc9bbe2dec5bb60941bc36776d3066
07 L 474ce57950d27d63a5c3af1dcf13e2f4093b9da3806239aa708c5128a2a9e5c3
root d22eb51d77b454b242397f2117b74e86f5aaa6b3295b896d46009a9d8fbfb478