i think the OP doesnt mean a timestamp of a tx.. but more so using data in a tx, confirmed to a block to validate a time.
eg if a block made at 10:05 on december 20th, includes a tx that has extra data of "a poem of flowers by ajareselde" then that in itself proves that the poem was available/public from atleast the 20th of december at 10:05
then if someone else claims they made a poem "a poem of flowers" on new years day.. using some other proof, ajareselde can show he made it on december 20th
so to the OP yes simply adding that signature as extra data to a tx, when finally locked into a block, will then give it a historical reference (using the blocks stamp)
eg if a block made at 10:05 on december 20th, includes a tx that has extra data of "a poem of flowers by ajareselde" then that in itself proves that the poem was available/public from atleast the 20th of december at 10:05
then if someone else claims they made a poem "a poem of flowers" on new years day.. using some other proof, ajareselde can show he made it on december 20th
so to the OP yes simply adding that signature as extra data to a tx, when finally locked into a block, will then give it a historical reference (using the blocks stamp)
This is exactly what i wanted to know, thank you.
Locking this now as my question has been answered in full.
