this can be "fooled" too
if just adding a date..
the true owner of the 2009 address can at any time..
create a new chain. and put an epoch time in a sig of 1291513567 (dec 2009) and then just hash a block with low difficulty and reference that hash in a next signature message where by they pretend to have transferred it every 6 months for 13 years they can easily reference a previous hash of 26 taints previous hashes and pretend each are done 6 months apart by just adding 15778463 to the epoch time each time they sign.. even though reality is they done 26 signatures in one day
and boom. this new chain has a better provenance than this topics sigchain is pretending to have provenance of
thus making the sigchain proposed no longer valid
Then he would have a 'signature chain' fork like a Bitcoin fork. Our rules wouldn't accept their transactions.
And that example above is the initial signature and doesn't need a transaction as mentioned in the 'how it works'
https://bitcointalksearch.org/topic/m.61386368Here is a regular 'signature chain':
created a 'signature chain' transfer:
1NCLNyKPGjx2GwdRSPB5xqfy58WtGtgNgo is the starting address (first time used in 2022, it is not an old address, just to show that it works)
The owner/holder of 1NCLNyKPGjx2GwdRSPB5xqfy58WtGtgNgo transfers the 'signature chain' to 1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP:
1) signs a message (message is the Bitcoin address of the new owner)
-----BEGIN BITCOIN SIGNED MESSAGE-----
1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP
-----BEGIN SIGNATURE-----
1NCLNyKPGjx2GwdRSPB5xqfy58WtGtgNgo
H5U5G/qQy2pk5Es6LCFrfzKuA5vFnpq7oBT4/V91jhGRafWg9Bq8A6Au+tPYNE/kdAm07JkcL82QTJ6QlSPr86Y=
-----END BITCOIN SIGNED MESSAGE-----
2) transfers Bitcoin from 1NCLNyKPGjx2GwdRSPB5xqfy58WtGtgNgo to 1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP (to the new owner)
txid 167af01dd191b0e2d47f7255a9f440789a0ae7cba92a644f69d2b39e1f120eaf
Block 765905
04/Dec/2022 9:25 PM UTC
output: only 1 legacy address = valid
Now 1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP is the owner of this 'signature chain' and tranfers it to 1B2a3bau6T5jHRgzWo4pzRj93fkPNaPZHj:
1) signs a message (message is the Bitcoin address of the new owner)
-----BEGIN BITCOIN SIGNED MESSAGE-----
1B2a3bau6T5jHRgzWo4pzRj93fkPNaPZHj
-----BEGIN SIGNATURE-----
1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP
H22/CTmYHFL5SPorqchj44pya7QRVYekvBxiqVslfMJechxQ1hE0tYpRjCxB/77A3tohMuhC1Pafa44wDgqlrWY=
-----END BITCOIN SIGNED MESSAGE-----
2) transfers Bitcoin from 1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP to 1B2a3bau6T5jHRgzWo4pzRj93fkPNaPZHj (to the new owner)
txid 12bbc865f8b5259cd0c40a5da954e488e555f746a59d001f225b94ebde73a8c9
Block 765907
04/Dec/2022 9:55 PM UTC
output: only 1 legacy address = valid
Now 1B2a3bau6T5jHRgzWo4pzRj93fkPNaPZHj is the owner of this 'signature chain'
1NCLNyKPGjx2GwdRSPB5xqfy58WtGtgNgo
1M4wDv1tGEt2yPL6FrkM6o19jxV6mdopnP
1B2a3bau6T5jHRgzWo4pzRj93fkPNaPZHj
and can transfer it.
It works
You can't break it. It works.