Digital Platformer Wins 3rd Place at JFIIP Final Pitch Event with GRPL, a Blockchain-Based Verifiable Renewable Energy Certificate Infrastructure
Tokyo, Japan — Digital Platformer Inc., a Tokyo-based developer of blockchain-based trust infrastructure, announced that it has won third place at the final pitch of the Japan Financial Infrastructure Innovation Program (JFIIP) with GRPL (Green Power Ledger), a blockchain-based infrastructure designed to provide verifiable traceability for renewable energy certificates.
GRPL records the full lifecycle of energy certificates—issuance, transfer, and final retirement—on the XRPL (XRP Ledger), enabling independent third-party verification of certificate histories. By leveraging blockchain technology, the system provides tamper-resistant, transparent tracking of environmental attribute associated with renewable energy generation and consumption.
The project is being developed as part of a joint research initiative involving Professor Naoaki Yamanaka of Keio University and I-Grid Solutions Inc., a renewable energy solutions provider based in Tokyo.
Addressing Transparency Challenges in Renewable Energy Markets
As the global transition to renewable energy accelerates, companies face increasing pressure to provide transparent and verifiable disclosure of environmental claims.
Conventional Energy Attribute Certificates (EACs) are typically issued on annual or monthly intervals, which can limit their ability to accurately represent the relationship between electricity generation and consumption. This structural limitation has contributed to growing concerns around greenwashing.
In response, international discussions have increasingly focused on Granular Certificates (GCs)—a framework for tracking electricity generation and consumption at finer time intervals. GRPL has been designed to support this emerging paradigm by enabling more precise and auditable certificate management.
GRPL: A Blockchain-Based Trust Layer for Energy Certificates
GRPL functions as a trust infrastructure layer that records the lifecycle of energy certificates based on generation and consumption data held by market participants.
Each certificate can be associated with key contextual data, including:
- Time of electricity generation
- Location of electricity generation
- Time of electricity consumption
- Location of electricity consumption
These data points are recorded on a blockchain ledger, creating a tamper-resistant record of certificate issuance, transfer, and retirement that can be independently verified by third parties.
Importantly, GRPL does not perform supply-demand matching or energy market operations. Instead, it acts as a neutral trust layer that records and manages certificate histories based on externally generated energy data.
Demonstrating Verifiable Environmental Attributes
During the JFIIP final pitch, Digital Platformer demonstrated how renewable energy supply and demand data can be recorded on a blockchain to create a verifiable history of energy certificates.
Each certificate transaction—from issuance to transfer and retirement—is recorded as a ledger transaction, allowing external stakeholders to independently verify the entire lifecycle of the environmental attribute.
This approach enables environmental claims to be presented not merely as declarations, but as verifiable data backed by cryptographic infrastructure.
Supporting Local Energy Ecosystems
Electricity markets are undergoing a global transition from centralized structures to increasingly distributed energy systems. In this evolving landscape, trusted infrastructure capable of objectively demonstrating the relationship between energy generation and consumption is becoming essential.
By enabling transparent traceability for energy certificates, GRPL aims to support local energy circulation models and strengthen trust in regional renewable energy ecosystems.
Digital Platformer has previously obtained a patent related to systems promoting local production and consumption of regional goods and services (Japanese Patent Application No. 2021-196808). A patent application for GRPL is currently pending.
Through its blockchain-based trust infrastructure technologies, Digital Platformer seeks to help establish a future in which environmental attribute is treated not simply as a claim, but as verifiable digital evidence.
References
・Japan Financial Infrastructure Innovation Program (JFIIP)
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