How can we remove block in blockchain but not modifying?
Michel Brown
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In blockchain technology, it is impossible to modify the data in block but it is possible to remove a block. Deleting a block is also changing of blockchain. What is difference between them?
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![Collin Thompson](https://ph-avatars.imgix.net/962123/a5d4c9b4-0589-467f-a230-5334e99b2601.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=36&h=36&fit=crop)
Collin Thompson@techronin
you would use a database that uses cryptographic keys to secure data directly on devices like https://gun.eco/
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