TimberChain, a blockchain-based timber traceability system, enhances the credibility of environmental certifications by ensuring transparent and tamper-proof tracking from forest to market. Its decentralized ledger records every step—harvesting, processing, and transport—preventing fraud and illegal logging. Certifications like FSC and PEFC gain trust as TimberChain verifies sustainable sourcing with immutable data, aligning with regulations like the EU Deforestation Regulation. Real-time tracking via web and mobile apps ensures accuracy, while permissioned access protects sensitive data. Despite challenges like initial data accuracy, TimberChain’s integration with RFID and QR codes strengthens supply chain integrity. By promoting biodiversity and reducing environmental impact, it builds consumer and stakeholder confidence, making it a reliable tool for credible, eco-friendly timber certification.