A system for producing a computer program code collaboratively using blockchain includes a plurality of computer nodes, the plurality of computer nodes forming a distributed network for collaborative work. Each of the computer nodes communicates directly with the others, and is operated by a user in accordance with a common smart contract. Contributions of each of the users are entered into the blockchain at respective computer nodes as blocks when transactions have been completed in accordance with the following steps: writing code for inclusion in said computer software program; submitting the code for the computer software program to the distributed network to complete a transaction to add a block with the code to the blockchain of the computer software program; detecting by the distributed network of the submission of code for the computer software program; and adding the code as a block to the blockchain of the computer software program.