The authors of this article don't seem to understand that "Blockchain technology" don't prevent people from simply entering fake data. Many of the things discussed in this article, for example informed consent forms, can be easily bypassed by simply either fabricating consent forms or entering data with fake dates.
At the end of the day, the hard part with clinical trial security isn't securing the data/documents (the FDA as a centralized trusted authority does quite a good job); the hard part is ensuring that the data entered actually matches reality. Blockchain technology doesn't help at all with that problem. Blockchain technology is only really useful when you don't have a centralized trusted authority like the FDA. However, in most legal scenarios (like clinical trials), a trusted centralized authority is readily and cheaply available and thus blockchain technology is worse than useless: it only adds additional cost and complexity with minimal benefit.
PS: I highly recommend people check out https://clinicaltrials.gov/ It's the US's public repository of clinical trials that contains details about many clinical trials and results. That one website probably contains a good fraction of our total human knowledge of what drugs/procedures do.
At the end of the day, the hard part with clinical trial security isn't securing the data/documents (the FDA as a centralized trusted authority does quite a good job); the hard part is ensuring that the data entered actually matches reality. Blockchain technology doesn't help at all with that problem. Blockchain technology is only really useful when you don't have a centralized trusted authority like the FDA. However, in most legal scenarios (like clinical trials), a trusted centralized authority is readily and cheaply available and thus blockchain technology is worse than useless: it only adds additional cost and complexity with minimal benefit.
PS: I highly recommend people check out https://clinicaltrials.gov/ It's the US's public repository of clinical trials that contains details about many clinical trials and results. That one website probably contains a good fraction of our total human knowledge of what drugs/procedures do.