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On "serious" contracts, it's common to put your initials on each page, or to fan out the stack of papers and sign the margin so that each page contains part of
by wongarsu 3y ago
On "serious" contracts, it's common to put your initials on each page, or to fan out the stack of papers and sign the margin so that each page contains part of that signature. Both are in addition to the "real" signature at the end, and provide some protection against exactly these kinds of problems.
I guess a cryptographer would add a hash of all preceding pages on the last page.
- CuriousCosmic 3y ago> I guess a cryptographer would add a hash of all preceding pages on the last page. That's basically how hashes and signatures work anyways. They basically take in the result of the previous block and integrate it into the new block so that if you change any part of the previous parts, the whole thing breaks. Edit: I should specify this is how the algorithms themself work. Implementations can fuck this up (and they do a lot).
- jimktrains2 3y agoThere are also Merkel trees, which are closer to the signature -on-"subdocuments" mentioned above. Also blockchains that explicitly include the previous block's hash.