The Philippines Puts Its Budget on Blockchain: Will This Beat Corruption?

In January 2026, the Philippines became the first country to publish its national budget on a public blockchain. This initiative is not merely a technical experiment; it is a direct response to the country’s 2025 flood control scandal, where over US$1 billion in public funds was diverted to over 400 “ghost projects”. While the blockchain project is in the initial phase — with only select budget records published on-chain — it provides a clear example of how blockchain technology can be used to combat the misuse of government funds.

The 2025 scandal exposed three key failures that contributed to large-scale budgetary corruption. There were last-minute insertions made anonymously during final bicameral committee meetings. There were instances of rigged procurement, with over 20 per cent of flood mitigation contracts going to 15 related contractors through kickbacks and collusive bidding. Lastly, unverified disbursements led to milestone payments and falsified inspection reports, which were released without appropriate scrutiny.

The current blockchain project is part of a larger movement to address both the vulnerabilities identified in the flood control scandal and the broader culture of opacity in public expenditures. In December 2025, the Philippine Senate unanimously passed the Citizen Access and Disclosure of Expenditures for National Accountability (CADENA) Act — a priority measure in President Ferdinand Marcos Jr.’s agenda. The bill is currently under review by the House of Representatives, with a target passage date of June 2026.

The Act mandates that every budget record, from preparation and legislation through execution and audit, be recorded on a publicly accessible blockchain within seven days of any transaction. Critically, every record must carry a digital signature which attributes each document to a specific official. In doing so, the CADENA Act closes the gaps: last-minute insertions will be attributable to their proposers; procurement bidder lists — previously accessible only through slower manual requests — will be publicly available. Milestone payments will be published within days rather than months, allowing for real-time monitoring by civil society actors such as nonprofit organisations and the media.

While many of the CADENA Act’s disclosure and transparency requirements could be satisfied through conventional web-based platforms, the blockchain architecture contributes three unique properties. The first is immutability: once a record is written into a secure public blockchain, altering it is virtually impossible. For an established blockchain such as Ethereum, the ledger of transactions is validated through a consensus mechanism involving thousands of servers distributed globally. As such, it is extremely difficult for any single party to control the majority of those servers and amend the historical record. The second is “trustlessness”: because copies of the transaction ledger are stored across disparate third-party servers, the integrity of the record does not depend on trust put into any one custodian — including the government itself. The ledger will survive document destruction or tampering regardless of subsequent official conduct. The third is digital attribution: if properly executed, every entry will carry a cryptographic signature that can be traced to the official who authorised it, providing a level of precision that generic online publishing lacks.

Three implementation challenges deserve close attention. Critics have raised data sovereignty concerns because public blockchains create dependencies on foreign-operated infrastructure and risk creating digital colonialism. However, a purely government-operated blockchain creates the opposite problem: the same local agencies being audited would control the auditing infrastructure. Fortunately, there is a technical solution: one approach would use zero-knowledge rollups (a form of cryptographic verification) to build a sovereign government chain that is anchored to a secure public blockchain like Ethereum. This approach keeps the auditing layer outside government control while the data infrastructure remains under Philippine sovereignty.

The current blockchain project is part of a larger movement to address both the vulnerabilities identified in the flood control scandal and the broader culture of opacity in public expenditures.

The second challenge is to ensure sufficient public accessibility. The current implementation provides a hyperlink to each record’s entry on the blockchain, but the interface does not explain to non-technical users how they can actually verify the record on the blockchain. To generate meaningful scrutiny, the platform should be able to instruct users in an accessible fashion on how they can audit posted records using blockchain data.

The third challenge is data integrity at the point of entry. Critics argue that the blockchain records are only as reliable as the inputs; an immutable ledger could merely preserve fraud rather than expose it. However, the CADENA Act’s seven-day publication mandate and comprehensive coverage — including records that previously required time-consuming Freedom of Information requests to obtain — narrows the window for undetected fraud. Radical transparency acts as a structural deterrent, and ultimately, data integrity will improve because the CADENA Act ensures fraudulent entries face far greater exposure than they would under the status quo.

To increase the incentive for public scrutiny of the budget records, the Philippines should also expedite legislation for a comprehensive whistleblower incentive mechanism. This was recently proposed in the Senate. The mechanism is modelled after the US False Claims Act, under which individuals who identify fraudulent government spending — whether through firsthand knowledge or independent analysis — receive a portion of recovered monies. This has proven effective at converting publicly available data into actionable fraud detection. An analogous law in the Philippines would create a constituency of motivated investigators to greatly increase the accountability of government spending, and convert the blockchain’s transparency from a passive record into an active enforcement mechanism.

To be clear, this blockchain budget initiative will not eradicate corruption — additional procurement, institutional, and enforcement challenges need to be addressed. However, the Philippines’ model demonstrates how blockchain technology can meaningfully advance fiscal accountability in countries committed to fighting corruption. The CADENA Act brings more eyes looking at more reliable data, more quickly: this is a significant step in the right direction.

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