kaal:claim:3782198-029

A blockchain is immutable because any attempt to edit an old block changes the hash of that information and is immediately rejected by the network that follows the protocol.

Source quote, verbatim

The blockchain is immutable, because any attempt to edit the old blocks will be immediately rejected by the network. A single number or letter changed anywhere in its entire history will result in a different hash of the information.

From

Craig Calcaterra, Wulf A. Kaal, Contemporary Decentralization (2021), New tools: blockchain protocols, p. 29
https://ssrn.com/abstract=3782198 · source PDF

Cite as

Craig Calcaterra, Wulf A. Kaal, Contemporary Decentralization (2021). SSRN: https://ssrn.com/abstract=3782198

Holds when

holds as long as the network keeps following the blockchain protocol

Classification

mechanismsupport: arguedblockchainconsensus-and-security

Related claims

restates kaal:claim:3071378-005 Because each new block's hash value is generated from all previous transactions, the smallest change to the bl...

Verify

The quote above is an exact substring of the source PDF, whose sha256 is e7e1378e3eed06cace6534e7792a7307d607d18bc6beb4ac45896476280728e4. Extraction method: pdf-text-layer.
Attestation record: colloquium/attestations/c457d873ede56c2e...json
Verify the binding yourself: curl -s https://wulfkaal.github.io/claims/3782198-029.md | sha256sum