Question on the Digital Signatures on the White paper

[Tyler Howell]

Hey Developers, and Bitcoin Experts!

In the Bitcoin White paper in the beginning it states “We define an electronic coin as a chain of digital signatures” and goes on to explain each owner signs a hash of the previous hash as well as the public key of the next owner.

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

Thanks for the time you spend to comment and give me advice!
- Tyler

[hmbdofficial]

Hey Developers, and Bitcoin Experts!

In the Bitcoin White paper in the beginning it states “We define an electronic coin as a chain of digital signatures” and goes on to explain each owner signs a hash of the previous hash as well as the public key of the next owner.

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

Thanks for the time you spend to comment and give me advice!
- Tyler

It’s not possible to move any coin without proofing you own that coin and thats what the digital signature does it is the digital signature that actually show that you approved of the transaction and it is link to your private and the public key as well.
The digital signature help proofing that you actually own the coin without revealing your private key to the network

[ABCbits]

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

If you mean creating address, where Bitcoin on it can be spend without digital signature, it's theoretically possible. You'll need to use P2SH, P2WSH or P2TR and specify how to use. Check REWARD offered for hash collisions for SHA1, SHA256, RIPEMD160 and other for real example.

[pawanjain]

Hey Developers, and Bitcoin Experts!

In the Bitcoin White paper in the beginning it states “We define an electronic coin as a chain of digital signatures” and goes on to explain each owner signs a hash of the previous hash as well as the public key of the next owner.

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

Thanks for the time you spend to comment and give me advice!
- Tyler

At the moment, there is no other technology which effortlessly proves the ownership of a coin without using a digital signature, especially in case of bitcoin.
Using the digital signature we can publicly prove that we are the owner of a public key without having to give away our private key.
Others can verify that we are the owner publicly and hence the bitcoin whitepaper mentions it as a chain of digital signatures since we keep transferring the coin from one owner to other.

[Donneski]

Hey Developers, and Bitcoin Experts!

In the Bitcoin White paper in the beginning it states “We define an electronic coin as a chain of digital signatures” and goes on to explain each owner signs a hash of the previous hash as well as the public key of the next owner.

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

Thanks for the time you spend to comment and give me advice!
- Tyler

In practice, once you remove digital signatures, you automatically lose the cryptographic proof of ownership. The signature is what actually allows the network to verify that the current owner truly authorized the transfer without trusting a third party. So  yeah, it's impossible to move coin without digital signatures.

[nc50lc]

Going on I am wondering if there would be any other possible ways for this without the use of a digital signature? (Even though I think this is nearly impossible or if not impossible)

Is this related to your project about creating a "trustless credit" that can decentralize collaterals?

Anyways, if you can come up with a script that utilizes standard Bitcoin "OP_Codes" that doesn't use OP_CHECKSIG/OP_CHECKMULTISIG,
then you might be able to implement something that doesn't require a digital signature to spend.
However, you'll most likely come up with a non-standard script that will not be relayed by the majority of the nodes.
One reference to start your research: developer.bitcoin.org/reference/transactions.html#opcodes

In case it's related to the project but you can consider signatures;
Check OP_CLTV or OP_CSV instead (BIP-0065 / BIP-0112).