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IMPORTANT: Do not remove copyright notices that already exist within a file unless the copyright owner removes them.

Copyright on Third Party Publishing Platform

The above copyright policy above also carries forward to third party publishing platforms such as,, and Due to the limited amount of meta data associated with the published code available on these platforms, the copyright statement should state: "Copyright contributors to Hyperledger <project>". The existing copyright notices will remain in the source files. Some platforms instead have an "Authors" meta data field instead of copyright. In that case the authors should be listed as "Hyperledger <project> Contributors".


For new files added to Hyperledger repositories, SPDX short identifiers are the recommended way of representing the license via comments within the header of the file. For Hyperledger, if using SPDX short identifiers, the following must be used to meet the requirements of the Hyperledger Charter (see below for details).