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
APITransaction action
MUNICIPALITY OF TUBAO, LA UNION Award a ₱2.0M contract to ARM ASIA CONSTRUCTION & ENGINEERINGMunicipalities
Transaction hash:
502197d72363dcedcc7ee2f02d642cf0cef57c0ade027e15fcbe8671393a08e8
Status:
Included and unchanged
Block:
#4,038 1,975 blocks after it
Position in block:
Transaction 2 of 15
Award day:
Feb 29, 2020 (6 yrs 8 mo ago)
Value:
₱1,967,398.23
Project:
1
Full record:
Accountability
Bill Sec. 3 and 19Responsible agency:
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 #4,038 signature valid Demo key, proves nothing about the governmentPublic key
Linked records: from budget to payment
Bill Sec. 5- 1. AppropriationGAA line item · Sec. 5(b)The award does not say which budget line pays for it.Not published
- 2. Allotment releaseSARO / allotment · Sec. 5(c)(iii)Not published per project. DBM releases SAROs, but not linked to individual contracts.Not published
- 3. Cash allocationNotice of Cash Allocation · Sec. 5(c)(iv)Not published per project.Not published
- 4. Contract awardNotice of Award (PhilGEPS) · Sec. 5(d)MUNICIPALITY OF TUBAO, LA UNION awarded it to ARM ASIA CONSTRUCTION & ENGINEERING on 2020-02-29.Found
- 5. Contract & progressContract / progress report (DPWH) · Sec. 5(d)No matching DPWH contract record (only DPWH contracts are listed with progress).Not published
- 6. PaymentDisbursement voucher · Sec. 5(c)(viii)Not published. No public source shows how much of this contract has been paid.Not published
- 7. CompletionCertificate of completion · Sec. 5(d)No completion certificate published.Not published
- 8. AuditCOA annual audit report · Sec. 5(e)(iii)COA's CY2024 audit of Tubao gave a "qualified" opinion on its financial statements (not specific to this contract).Partly
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
DemoEdit the amount as if someone quietly changed the record. Your browser re-hashes it and walks up the chain. Nothing is saved.
- 1. Record fingerprint changedstored 502197d723…3a08e8now …
- 2. Block Merkle root changedstored 224a855925…06a1c6now …
- 3. Block #4038 hash changedstored 11c037f259…eb589enow …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (4 steps)
How this one record is tied to the block's Merkle root, without needing the other 14 records. Each step hashes the current value together with the sibling shown.
- leaf 502197d72363dcedcc7ee2f02d642cf0cef57c0ade027e15fcbe8671393a08e8
- 01 R 52f42c819abced1c3a79c2135eac5ca1a86a45a4f9cd90df7935b652994d57fd
- 02 L 8281eb93f080b7a5f26992d900c55dace9c9fbe40fd0bc367ac091d5833b0980
- 03 R 2b6592c4532bf1068d8ef2a8dd3a2a309cb08906804ccb68a95169f6842df3a3
- 04 R c346786eb021905b8b0ff1b858f047d6570933a11608d8c76ec355261b36c06a
- root 224a855925123f4c27ef1bcdb83bff911afddea123c7bb3c32dd514a1a06a1c6