You are confusing a digital signature for evidence of anything other than an attestation.
If you create a digital record, then sign it, then that signature is only an attestation of may claim you make, not evidence of that claim. That is the problem with relying on technology to establish trust - the moment you attach an economic benefit to a technology you incentivize people to circumvent it, or to leverage it to commit fraud.
If you create a digital record, then sign it, then that signature is only an attestation of may claim you make, not evidence of that claim. That is the problem with relying on technology to establish trust - the moment you attach an economic benefit to a technology you incentivize people to circumvent it, or to leverage it to commit fraud.