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 EDUCATION - DIVISION OF CITY SCHOOLS, MANILA Award a ₱3.3M contract to SHERF BUILDERS CORPORATIONNational agencies

Transaction hash:

8afb509c87ddefb5fa08f48608903d4d5762938cabece0dd4c2363405c69c32e

Status:

Included and unchanged

Block:

#2,907 3,106 blocks after it

Position in block:

Transaction 58 of 104

Award day:

Nov 16, 2016 (9 yrs 11 mo ago)

From:

DEPARTMENT OF EDUCATION - DIVISION OF CITY SCHOOLS, MANILA

To:

SHERF BUILDERS CORPORATION

Value:

₱3,292,164.68

Project:

Repair/Rehab Araullo HS

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

DEPARTMENT OF EDUCATION - DIVISION OF CITY SCHOOLS, MANILA

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 #2,907 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 EDUCATION - DIVISION OF CITY SCHOOLS, MANILA awarded it to SHERF BUILDERS CORPORATION on 2016-11-16.
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 8afb509c87…69c32enow …
2. Block Merkle root changed
stored 50b375ba1f…e490d4now …
3. Block #2907 hash changed
stored e21ad1d6e3…71c90fnow …

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 8afb509c87ddefb5fa08f48608903d4d5762938cabece0dd4c2363405c69c32e
01 R 8fdc2e302decaca11a9c9807116ebca19aee9e11ae21f3a181968db3b763d322
02 L 60540908c34241cd10a3c17227b69ebc99170932b505251ff198843fbed2878e
03 R b81a1c39e57899c1549aca467cd4b2d64e308c1aa193970736086fbdc0c09eec
04 L f82430b85cf937b60f8b08da0cb969a7416cd99067672ae5101da0df1f02cb93
05 L 4bb39a63dbe31d82417aad37c029e2dffbdc4dcb78ade1bf5e923ee3c11c0d7b
06 L 115d84ffc63c5c9ef75f7730978489eebe272a69e89f361ce696591a5650b3bd
07 R 57386bfdc7ecefe1aa180bc5e4b0e060c87c2ce3b062d48590dcac54b4ea9947
root 50b375ba1f6871f485057ac4a9d41ff5bb0b7f52f9bc496b70565246fde490d4