Blockchain
Blockchain is a growing list of records (blocks) that are securely linked together: each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. Consequently, the data in any given block can only be tampered with by altering all subsequent blocks.
Blockchain as a technology lays a foundation for Web 3.0, mainly due to its distributed nature of decision-making and verifying, i.e., making any intermediaries or authorities obsolete. To establish trust in blockchain technology, it is necessary to ensure the tripod: security, authenticity, and integrity. Once the data are on the internet, we can, with reasonable certainty, be sure that the tripod is strong and secure in the case of the blockchain.

To interact with blockchain securely, public-key (asymmetric) cryptography is used. For example, a user publishes his public key to expose himself on the blockchain for interaction with other users, e.g., expecting to receive a cryptocurrency payment. The paying user makes a transaction using the public key as the address. The receiving user can access those assets using his private key only, which is unknown to the public. Thus, blockchain technology tackles those issues mainly successfully.
However, in MorphMetro blockchain is not used as a financial tool. It has two different roles through two different blockchain platforms: Alastria and EBSI.
– Alastria plays a crucial role by serving as the backbone for a secure, EVM-based consortium blockchain framework. This framework is instrumental in recording logs of all data exchanges and confirming the immutability of both measured data and the analysis results derived from it. By utilizing Alastria, MorphMetro aims to enhance the reliability and trustworthiness of data exchanges, crucial for maintaining the integrity of measured data and analysis within the metrology field. This approach aligns with the project’s objective of providing a trustworthy, scalable solution compliant with existing and future regulations.
– The European Blockchain Services Infrastructure (EBSI) is crucial for authenticating digital identities. It ensures that entities, such as laboratories and third-party services, can securely confirm their identities through decentralized identifiers (DIDs), recorded on the EBSI platform. This process strengthens the trust and security framework for data exchanges within the project, leveraging EBSI’s capabilities to support a trustworthy and compliant digital environment.