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Yes it's a very valid concern. And you don't even have to go into porn territory, if the blockchain containans personally identifiable information, and it does,
by tirpen 5y ago
Yes it's a very valid concern. And you don't even have to go into porn territory, if the blockchain containans personally identifiable information, and it does, then it's probably in violation of the GDPR in the EU.
Immutable data is almost never a good idea in practice.
- iszomer 5y agoThis reminded me of Keybase where they signed and published [0] their root Merkle tree to the Bitcoin blockchain, as part of their server security mechanism. It was an ingenious idea at first until when it came to signature revocations. Even though they have the mechanism for that too, the data itself is still stored onto the blockchain forever with no "garbage collection" on deprecated data, outside of Keybase's control. [0] https://book.keybase.io/docs/server/merkle-root-in-bitcoin-blockchain https://book.keybase.io/docs/server/merkle-root-in-bitcoin-b... [1] https://keybase.io/docs/server_security/merkle_root_in_stellar_blockchain https://keybase.io/docs/server_security/merkle_root_in_stell...