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How is the transaction signature verified without the public key? This link seems to indicate spender public keys are inside of the transaction: https://bitcoin
by atwood22 4y ago
How is the transaction signature verified without the public key? This link seems to indicate spender public keys are inside of the transaction: https://bitcoin.stackexchange.com/a/102667 https://bitcoin.stackexchange.com/a/102667
- astrange 4y agoAh, I had the details wrong. If there’s a signed transaction from a wallet, then you have the compressed public key and it’s not quantum safe. But if the funds are sent to a new wallet address and there’s no transactions signed by that wallet yet, it can’t be forged without also reversing the hash that created the address.
- atwood22 4y agoYes, it was a good idea to do that. I didn't realize that addresses were essentially a hash of the public key, but it makes sense.