Judul: Design of Blockchain System for Smallhoder Palm Oil Supply Chain Traceability with Hyperledger Fabric
Abstrak: The project "Design of a Blockchain System for Smallholder Palm Oil Supply Chain Traceability with Hyperledger Fabric" aims to enhance transparency, accountability, and sustainability in the palm oil industry, focusing on smallholder farmers in Riau. Utilizing Hyperledger Fabric, this project develops a blockchain-based traceability system that addresses critical issues such as fragmented supply chains, lack of record-keeping, and compliance with sustainability standards like NDPE and ISPO. Hyperledger Fabric enables the recording of transactions from cultivation to distribution in an immutable and transparent manner. Data analysis, conducted using tools like Hyperledger Caliper, validates the system's performance and scalability. Key findings demonstrate that Hyperledger Fabric blockchain technology can significantly improve traceability, compliance, and market access for smallholders. The project highlights the need for stakeholder engagement, integration of advanced technologies, and continuous system optimization. Recommendations include enhancing training, integrating IoT and AI for data collection and predictive analytics, promoting system adoption, and ensuring data privacy and security. This project sets a precedent for using Hyperledger Fabric to support sustainable agricultural practices and improve economic opportunities for smallholder farmers, offering a replicable model for other regions and sectors., Proyek "Desain Sistem Blockchain untuk telusuran KeterRantai Pasok Minyak Sawit Petani Swadaya dengan Hyperledger Fabric" bertujuan untuk meningkatkan transparansi, akuntabilitas, dan keberlanjutan dalam industri minyak sawit, dengan fokus pada petani kecil di Riau. Dengan menggunakan Hyperledger Fabric, proyek ini mengembangkan sistem ketertelusuran berbasis blockchain yang mengatasi masalah kritis seperti rantai pasok yang terfragmentasi, kurangnya pencatatan, dan kepatuhan terhadap standar keberlanjutan seperti NDPE dan ISPO. Hyperledger Fabric memungkinkan perekaman transaksi dari budidaya hingga distribusi secara tidak dapat diubah dan transparan. Analisis data, yang dilakukan menggunakan alat seperti Hyperledger Caliper, memvalidasi kinerja dan skalabilitas sistem. Temuan utama menunjukkan bahwa teknologi blockchain Hyperledger Fabric dapat secara signifikan meningkatkan ketertelusuran, kepatuhan, dan akses pasar bagi petani kecil. Proyek ini menekankan perlunya keterlibatan pemangku kepentingan, integrasi teknologi canggih, dan optimasi sistem berkelanjutan. Rekomendasi termasuk peningkatan pelatihan, integrasi IoT dan AI untuk pengumpulan data dan analisis prediktif, promosi adopsi sistem, dan memastikan privasi serta keamanan data. Proyek ini menetapkan preseden untuk menggunakan Hyperledger Fabric guna mendukung praktik pertanian berkelanjutan dan meningkatkan peluang ekonomi bagi petani kecil, menawarkan model yang dapat direplikasi untuk wilayah dan sektor lainnya.
Keyword: Smallholder Palm Oil Supply Chain, blockchain, supply chain, traceability, hyperledger fabric

Judul: Development of Agriblock Blockchain Platform for Traceability in Agricultural Products Supply Chain
Abstrak: Manajemen rantai pasok produk pertanian merupakan proses yang mencakup manajemen aliran informasi dan barang dari penangkar hingga ke konsumen akhir. Penerapan teknologi blockchain pada rantai pasok dapat meningkatkan nilai jual barang dan kepercayaan konsumen terhadap barang yang dibeli. Penelitian ini berfokus pada pengembangan platform blockchain Agriblock untuk meningkatkan ketertelusuran dalam rantai pasok produk pertanian, khususnya bawang merah. Platform blockchain Agriblock dikembangkan menggunakan NodeJs dengan bahasa pemrograman Typescript. Platform blockchain Agriblock yang dihasilkan terdiri atas tiga lapisan utama: infrastruktur, komputasi terdistribusi, dan platform. Lapisan infrastruktur meliputi komponen node, penyimpanan, dan jaringan pada blockchain. Lapisan komputasi terdistribusi mencakup komponen blok, transaksi, protokol konsensus, dan fungsi hash. Lapisan platform terdiri atas komponen REST API yang memfasilitasi komunikasi data dengan jaringan blockchain. Penelitian ini diharapkan dapat menjadi landasan awal dalam pengembangan platform blockchain yang difokuskan untuk manajemen rantai pasok produk pertanian., Supply chain management of agricultural products involves managing the flow of information and goods from breeders to end consumers. The use of blockchain technology in the supply chain can enhance the value of goods and increase consumer trust in the purchased products. This research focuses on the development of the Agriblock blockchain platform to improve traceability in the supply chain of agricultural products, especially shallots. The blockchain platform was developed using NodeJs with Typescript programming language. The resulting Agriblock blockchain platform consists of three main layers: infrastructure, distributed computing, and platform. The infrastructure layer includes node components, storage, and network of the blockchain. The distributed computing layer encompasses block components, transactions, consensus protocols, and hash functions. The platform layer consists of REST API components that facilitate data communication with the blockchain network. This research is expected to be an early foundation in the development of a blockchain platform that focused on agricultural product supply chain management.
Keyword: shallot, agriculture, Smallholder Palm Oil Supply Chain, traceability, blockchain

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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