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 LUCBAN, QUEZON Award a ₱499.3K contract to TAN TAY LIM BUILDERS AND GENERAL CONTRACTORMunicipalities
Transaction hash:
45f088f62a38eb5c4cd5c26250fed4ce10e4945ffc8ba1a01f2a63f4b17384a0
Status:
Included and unchanged
Block:
#4,461 1,552 blocks after it
Position in block:
Transaction 50 of 168
Award day:
May 27, 2021 (5 yrs 5 mo ago)
Value:
₱499,322.32
Project:
Construction of Elevated Water Tank
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 #4,461 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 LUCBAN, QUEZON awarded it to TAN TAY LIM BUILDERS AND GENERAL CONTRACTOR on 2021-05-27.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 Lucban 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 45f088f62a…7384a0now …
- 2. Block Merkle root changedstored 4987863640…a4f8cenow …
- 3. Block #4461 hash changedstored 49e0dc2ac5…bab3d4now …
Chain intact. The record matches its fingerprint, so the block and every block after it still line up.
Merkle proof (8 steps)
How this one record is tied to the block's Merkle root, without needing the other 167 records. Each step hashes the current value together with the sibling shown.
- leaf 45f088f62a38eb5c4cd5c26250fed4ce10e4945ffc8ba1a01f2a63f4b17384a0
- 01 R 4603cb9da9c752c64225d67efc426e2c8466bb0fb2f9317a1b40ad945913b57d
- 02 L 1da2b13afa66d1c6e9a65774b70568e34bf730ba519faac87ac9523539fbfd75
- 03 R 51e25dfd296510922f4361ca577111c54d44aaa418d073fe9972787362dec763
- 04 R 17713ed8888002dc747ff4213ed5f7caf5709d0e776826f73512eec728f653ec
- 05 L 5f52e0555b03aa9038a7a5c6e5e2a037e41cdf8d3745c89f93b3068efff7e29d
- 06 L c52bf7ece39b4f2e5cdeb7a52eaebd5b682ba46ee44993e5aada55359aaa9c6f
- 07 R 7eb19557582460691e11be985def923d372b675d4f2e835f5cf4e5755bf9cbf2
- 08 R 2dde26d59ac85a0e211eac380db1e7d1ab9ce4f70932ff7ed097ec02895bb098
- root 4987863640724fbbebacc9b539139a1c18d21493e0576c2f06ca185a65a4f8ce