Quote from: mdayonliner on January 30, 2019, 06:18:06 PM

Quote from: mojolama on January 30, 2019, 06:13:43 PM

Suggestions for other methods to authenticate?

I will be following this topic hoping to get some good insights. I always thought to play with coins and collectibles but I have zero Idea how to find the authenticity and also security.

- How do you know in a Casascius coin the private key is not compromised? I hope I did not ask a stupid question Tongue

OP: Thanks for creating the topic.

1st, check the blockchain to see if coin/address has been redeemed
2nd, check the hologram on the coin itself. It has anti-tamper measures that can be seen if someone tries to remove/lift.

Might be some other things you could do, but if remember: Not your keys, not your bitcoin.
While it might be nice to own these or even "store" your bitcoin, the ultimate security comes from controlling your own keys