Abstract: A digital content contribution verification system in a decentralized network is described. In an implementation, digital content is obtained and a plurality of portions are located from the digital content. A decentralized identifier and verifiable credential are identified as associated with a respective portion of the plurality of portions. The decentralized identifier is resolvable to a respective node from a decentralized network of nodes individually configured to store, receive, and transmit data. Representations are displayed of the decentralized identifiers indicative of a respective entity and corresponding verifiable credentials validating a relationship of the respective entity with the respective portion.

Abstract: A method of selectively growing silicon carbide is provided. The method includes forming a mask including tantalum carbide that masks a portion of a substrate, and epitaxially growing a crystal including silicon carbide seeded by an exposed surface of the substrate. A method of selectively etching silicon carbide is also provided. The method includes forming a mask including tantalum carbide that masks a portion of a substrate, and etching an exposed surface of the substrate. A method of fabricating a device is further provided that includes forming a mask including tantalum carbide that masks a portion of a first layer of the device, and epitaxially growing a second layer of the device, wherein the second layer includes a crystal including silicon carbide seeded by an exposed surface of the first layer.