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

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR Award a ₱4.4M contract to GREYROCK CONSTRUCTIONCities

Transaction hash:

e8d96b2ca2feef965a7daa79086657b40514c614619faf022a21de8a85d9a643

Status:

Included and unchanged

Block:

#234 5,779 blocks after it

Position in block:

Transaction 5 of 6

Award day:

Dec 12, 2007 (18 yrs 11 mo ago)

From:

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR

To:

GREYROCK CONSTRUCTION

Value:

₱4,442,411.44

Project:

Const. of Slope Protection / Impv't. of Farm-to-Market Road / Concreting of Road (Cluster)

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR

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 #234 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)
CITY OF ZAMBOANGA, ZAMBOANGA DEL SUR awarded it to GREYROCK CONSTRUCTION on 2007-12-12.
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)
COA's CY2024 audit of City of Zamboanga gave a "qualified" opinion on its financial statements (not specific to this contract).
Partly
Open

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

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 e8d96b2ca2…d9a643now …
2. Block Merkle root changed
stored 948746b567…bad4afnow …
3. Block #234 hash changed
stored 22a0479d1a…4efcf9now …

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

Merkle proof (3 steps)

How this one record is tied to the block's Merkle root, without needing the other 5 records. Each step hashes the current value together with the sibling shown.

leaf e8d96b2ca2feef965a7daa79086657b40514c614619faf022a21de8a85d9a643
01 L e4de5ad33dda26b17543b65c6fe2ed795dcd4e76c21ada678f9e282b6a7f8ab6
02 R 7141bd335838c3e0b8eb83d3740b5837b6c97665448255a0edaecd8f213c6f6d
03 L 17802542bb16f161c7418d6ed97a2b69634e2a07bfc7f9794266be2b098feb5a
root 948746b5678563ac0315a120408dee93512fc707b798ad9e1e762bd3aabad4af