The Rotterdam-Singapore Green and Digital Shipping Corridor partners recently completed a successful pilot for bunkering mass-balanced liquefied bio-methane (LBM) at the Port of Rotterdam, symbolizing a significant step towards sustainable shipping practices. The pilot involved supplying 100 tonnes of mass-balanced LBM from Shell to CMA CGM's LNG-powered containership, offering a more environmentally friendly option compared to traditional marine fuels. Led by the bio-methane working group under SEA-LNG, this initiative aligns with the corridor's commitment to promoting near-zero emission fuels on busy shipping routes. The use of LBM, produced from waste-based feedstock, presents a viable alternative for the maritime industry's energy needs. To ensure compliance with regulations and sustainability standards, a Proof of Sustainability certificate has been issued and will undergo auditing by ISCC-EU-accredited third parties. The application of the mass balance methodology in this pilot enables the tracking of LBM through the supply chain, supporting adherence to certification standards, Renewable Energy Directive II, and FuelEU Maritime regulations. Additionally, this methodology aligns with international frameworks for climate change accounting, preparing stakeholders for future regulatory requirements. The Rotterdam-Singapore Green Shipping Corridor, established in 2022, aims to drive decarbonisation and digitalisation in the maritime sector, fostering collaboration across various industry stakeholders. With the successful completion of the LBM bunkering pilot, the corridor showcases a commitment to sustainable practices and innovation in the shipping industry. This pilot sets the stage for future similar initiatives, with plans for a full sustainability-certified LBM bunkering pilot in the Port of Singapore. Overall, the corridor's efforts and partnerships reflect a positive shift towards environmentally conscious and compliant maritime operations.