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>The only time in which you would need blockchain over a centralized DB is when everyone needs access to the DB, but no one trusts each other. How is that not

>The only time in which you would need blockchain over a centralized DB is when everyone needs access to the DB, but no one trusts each other. How is that not solved by a layer of permissions?

wongarsu 5y ago
If you have one trusted party that can run a database with permission system and audit trail, then you don't need a blockchain. But if no one trusts each other, but you still require everyone to have the ability to update some data, then a blockchain becomes useful
- toomuchtodo 5y ago
  My multiple healthcare providers use OAuth and the electronic medical record system made by Epic to exchange my medical records, no blockchain required. Apple Health obtains access to all of the data at various providers through the same mechanism. At a higher level, if you’re willing to do business with someone, and you’re providing or accepting fiat, goods, or services, there is a baseline level of trust between parties and an understanding that any breakdowns in trust will be resolved by contract law and courts.
  - toomuchtodo 5y ago
    Replying to my own comment as the edit window has timed out. Apple has coincidently released functionality as part of iOS 15 for verifiable health records data. Note the use of digital signature crypto primitives. > Find out how you can securely request access to someone's verifiable health records and incorporate that data safely into your app. The Health app helps people download, view, and share their health records, including their COVID-19 immunization and test results — and iOS 15 brings support for the Smart Health Card, a verifiable health record that incorporates the FHIR health data standard. We'll show you how your app can go about requesting access to this record and how you can verify the signature of the file using CryptoKit and the issuer's public key. https://developer.apple.com/videos/play/wwdc2021/10089/ https://developer.apple.com/videos/play/wwdc2021/10089/

>The only time in which you would need blockchain over a centralized DB is when everyone needs access to the DB, but no one trusts each other. How is that not solved by a layer of permissions?

wongarsu 5y ago

If you have one trusted party that can run a database with permission system and audit trail, then you don't need a blockchain. But if no one trusts each other, but you still require everyone to have the ability to update some data, then a blockchain becomes useful

toomuchtodo 5y ago
My multiple healthcare providers use OAuth and the electronic medical record system made by Epic to exchange my medical records, no blockchain required. Apple Health obtains access to all of the data at various providers through the same mechanism. At a higher level, if you’re willing to do business with someone, and you’re providing or accepting fiat, goods, or services, there is a baseline level of trust between parties and an understanding that any breakdowns in trust will be resolved by contract law and courts.
- toomuchtodo 5y ago
  Replying to my own comment as the edit window has timed out. Apple has coincidently released functionality as part of iOS 15 for verifiable health records data. Note the use of digital signature crypto primitives. > Find out how you can securely request access to someone's verifiable health records and incorporate that data safely into your app. The Health app helps people download, view, and share their health records, including their COVID-19 immunization and test results — and iOS 15 brings support for the Smart Health Card, a verifiable health record that incorporates the FHIR health data standard. We'll show you how your app can go about requesting access to this record and how you can verify the signature of the file using CryptoKit and the issuer's public key. https://developer.apple.com/videos/play/wwdc2021/10089/ https://developer.apple.com/videos/play/wwdc2021/10089/