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

PHILIPPINE AIR FORCE Award a ₱57.3M contract to R.D. MANDANAS CONSTRUCTIONNational agencies

Transaction hash:

50c2bfaa291ea32d8d2eabf747721c36467999dcfc8a0cdabb1b433b69521a2f

Status:

Included and unchanged

Block:

#4,237 1,776 blocks after it

Position in block:

Transaction 369 of 1,204

Award day:

Sep 30, 2020 (6 yrs 1 mo ago)

From:

PHILIPPINE AIR FORCE

To:

R.D. MANDANAS CONSTRUCTION

Value:

₱57,303,316.96

Project:

PB-PAFBAC-172-20

Full record:

Open the award page

Accountability

Bill Sec. 3 and 19

Responsible agency:

PHILIPPINE AIR FORCE

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 #4,237 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)
PHILIPPINE AIR FORCE awarded it to R.D. MANDANAS CONSTRUCTION on 2020-09-30.
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 50c2bfaa29…521a2fnow …
2. Block Merkle root changed
stored 4cf44a6f10…210053now …
3. Block #4237 hash changed
stored eb3a99c020…e97410now …

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

Merkle proof (11 steps)

How this one record is tied to the block's Merkle root, without needing the other 1,203 records. Each step hashes the current value together with the sibling shown.

leaf 50c2bfaa291ea32d8d2eabf747721c36467999dcfc8a0cdabb1b433b69521a2f
01 L 509ef4a9cacf2e40428c2d1902e961d6d0055fcc180794e00e70bf5a3f878917
02 R d33a8258ee28262ae7fd03a87916992b2ab49311b4cd2945a24a24a035e4e4ff
03 R c427a8957238fe566138cceec2b21a322a9e5f8186d6e0400fa0cb18568e89ae
04 R cbdb0e8acf742bb050c06c44acb858944ab0736d24bd7aaa486c75f227eeb975
05 L 58bd88c98fb85d116bffc3b1ba29960c400ae78754a25f21942f233fea49d144
06 L bfef07b32f2f09d6a9e630979bb9560f5c9b1ba151b9c204b145b5f0c6d418e0
07 L 392a7b0c77c2f6e774b50f3388cffff7c9aadaa4ee045ee822499a9b7fadf890
08 R 1916129c3dde9f1fc9136da9cadb2f870035b9c409ebda0a1ab4e2849f2b05a8
09 L 65b98e7d78122d86c72f14410fdbdb19c9b68fe4f905c74d83bf0583a0ac6a28
10 R dfb8d572427e6eb8e96b8fd723bbf9db85376a4c5a3d360e0885a7b63eac2f67
11 R e52c213a4925397c81e73943717e6ef5b4b6d040d892e4fd42fd5683a7fcc063
root 4cf44a6f10836aed6e9128ce74ac7e3c1f227597e75d25328502126aac210053