The below software stack diagram provides a visual reference on how the platform project is laid out with regards to external data sources, data platforms and DLT-based platforms. The main development efforts are contoured in green since external data sources are comprised of existing climate accounting platforms and the blockchain layer includes emerging blockchain-based applications. Prototype developments in the blockchain layer include common smart contracts (eg. the Paris agreement) and handlers that can communicate with a diverse set of blockchains (eg. Ethereum, Bitcoin, Cosmos, Stellar etc.).