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
CITY OF QUEZON Award a ₱2.1M contract to V.S. CERDON IRON WORKS & CONSTRUCTIONCities
Transaction hash:
e6e0cd990c8445ee032fcca70c2aa21abca846a860f1fba4e1a913f33e0d7462
Status:
Included and unchanged
Block:
#1,683 4,330 blocks after it
Position in block:
Transaction 247 of 271
Award day:
Feb 18, 2013 (13 yrs 8 mo ago)
From:
Value:
₱2,147,037.44
Project:
13-1021
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 #1,683 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)CITY OF QUEZON awarded it to V.S. CERDON IRON WORKS & CONSTRUCTION on 2013-02-18.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 Quezon City gave a "unmodified" 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 e6e0cd990c…0d7462now …
- 2. Block Merkle root changedstored 28997a9d6c…acc51bnow …
- 3. Block #1683 hash changedstored 2c9de5e318…657eb1now …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (9 steps)
How this one record is tied to the block's Merkle root, without needing the other 270 records. Each step hashes the current value together with the sibling shown.
- leaf e6e0cd990c8445ee032fcca70c2aa21abca846a860f1fba4e1a913f33e0d7462
- 01 L e4f9d779b6d909170aa4b726eb8ff4e1f7e1f57c44986ad69102939ae87ff37a
- 02 L 502dcc3219896c61be4584ef8da1ae8df12cdf1cd20cc09e171fd7ff4ed8104d
- 03 L 520be46cf530d58955adf8ace819f407b1d5753c7d3b976b1b4a5416fa39ca43
- 04 R 308341393f9bcc7ad77382e1ab2925592d7ad4cab1178e9680476a545e811526
- 05 L 98fa3db427b84760883a43afa215f42e3bc138fd067d3663584d5360d0add45b
- 06 L 6860450a0436dcbfcf8d5e30d7f9bc1b26b71db0ba41b9f2a153d37ee702ddcb
- 07 L 0fa0085e6f10d4b17e9f1a48bd7ccc2ce3930244145d33f214ea92a160fcea1b
- 08 L b402c1f4d8f5febca57fbf3f7028c71f3f06f4b09d1e1698d75c877cdc7184d9
- 09 R 1c148762a9844a166160c1a4c39b9c28676ff8c8b954bfdb196d5a5b9651c187
- root 28997a9d6c7829910da984dd5bd36eb9ad1198470a7f06eaf50063dbcfacc51b