I'm saying you don't have to.
As for "100% certainty," there is a non-0 chance that someone will randomly create a private key that collides with yours, enabling them to spend all your coins.
If you want 100% certainty, you don't want Bitcoin.
What the chain says
- Block
- 673 186
- Time
- 2021-02-06T05:38:18Z
- Signer
- 15YXRhqbHawbH49aYzfiww2UQ4Cz82GL4t
- App
- twetch
- Type
- post
- Content type
- text/plain
- Name in tx
- twetch#622
Fields the transaction did not carry are omitted. Open the payload to see the bytes as stored.
Signed by
15YXRhqbHawbH49aYzfiww2UQ4Cz82GL4t Verified