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Questions relating to application security, safety, trust, and attacks against the Ethereum software stack and blockchain system.

51 votes
4 answers
12k views

Is there anything stopping me from using the ethereum blockchain as data storage?

As I understand it, smart contracts are currently immortal by default. Does this mean that I could create a contract that happened to contain an encoded form of baby photos and have it stored forever? …
Shelvacu's user avatar
  • 1,405
30 votes
3 answers
4k views

Is Ethereum secure against an attack by quantum computers?

Does Ethereum implement Post-quantum cryptography? Or will the network break once a malicious actor gains control of an effective quantum computer?
Shelvacu's user avatar
  • 1,405