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 CALAMBA, LAGUNA Award a ₱498.5K contract to JAMES CONSTRUCTIONCities
Transaction hash:
b19a16e61eabb35144545f7684391acece089f52439999b891bb5465064c7f62
Status:
Included and unchanged
Block:
#4,739 1,274 blocks after it
Position in block:
Transaction 399 of 594
Award day:
Mar 7, 2022 (4 yrs 8 mo ago)
Value:
₱498,467.88
Project:
Water Supply System
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 #4,739 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 CALAMBA, LAGUNA awarded it to JAMES CONSTRUCTION on 2022-03-07.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 City of Calamba 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 b19a16e61e…4c7f62now …
- 2. Block Merkle root changedstored 4bb1292c0e…a40294now …
- 3. Block #4739 hash changedstored eef54da3b8…afb41cnow …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (10 steps)
How this one record is tied to the block's Merkle root, without needing the other 593 records. Each step hashes the current value together with the sibling shown.
- leaf b19a16e61eabb35144545f7684391acece089f52439999b891bb5465064c7f62
- 01 L b1752a03d6d143a87b4eb8296c0d40a49424e33d1b36876cd50c03225820e7c1
- 02 L 1b166ac0c4dcfe87c8635027828edf225919738cb9d2506f5a4e42e09ba24aff
- 03 L 8f34d53ec1edaa65b3f5023fae0c4f526545aa536da47d8e96414be8b7f91e7f
- 04 L ef729e17c938ff4e833a928af1513d67a264d42df45ad5bd0a558e1debdce04d
- 05 R 03921ea8c15dc4b5ed02dc3606a4dfac495b83efec36afd2753dff565e779a91
- 06 R dcbe6d8624ef9777a2a445c30e8ff2bdbb27992ae93656cdca8071fcf403949c
- 07 R 80276903161b0c4d31787adee5ddb194250c629fda076f049914adae1d359a6a
- 08 L 9036186f52501244d3de5fc949d1065f84969143d1c4ecc6f6f178dabfdb2410
- 09 L 22378fa2a60d0ea69b9764c9632f8eae99534f1c0ef49dcc62151e5cc97218d3
- 10 R 1fd3d8f41dd56b727533f8491e89881293dee7ce279e30f0a8edaed6a114a291
- root 4bb1292c0e3e42d9039f19724ae93f48ffb769eaa61f1ebf2ca7d614f9a40294