You'd have their public key to verify the signature. The private key is kept secret by the sender, used only to sign.
Remember: Public key for checking, private key for signing. Key stuff! 🔑🔍✍️
How do you detect a failed/invalid transaction on bitcoin blockchain?
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You'd check the blockchain. If a transaction failed, it won't be confirmed or it’ll have an error message.
It's like checking tracking – if it says "delivered" and you got nothing, something's up! 🕵️♂️🚫📦
What are the common error messages?
