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179 sats \ 1 reply \ @0359b79948 12 Nov 2022
Opentimestamps does this for free.
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1 sat \ 0 replies \ @satoshisat OP 13 Nov 2022
Thank you for that. Didn't know about opentimestamps. Will take a look.
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1 sat \ 4 replies \ @satoshisat OP 12 Nov 2022
Unfortunately, it seems like the project has been inactive for quite some time. Anyone have any news on this?
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0 sats \ 3 replies \ @Scroogey 12 Nov 2022
deleted by author
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1 sat \ 2 replies \ @satoshisat OP 12 Nov 2022
That link doesn't seem to be working for me.
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5 sats \ 1 reply \ @Scroogey 12 Nov 2022
https://archive.ph/bGomy
The trick is in the screenshot with the OP_RETURN as destination address, I would never have thought to just try that.
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1 sat \ 0 replies \ @satoshisat OP 12 Nov 2022
interesting. thank you for that info!
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17 sats \ 0 replies \ @rijndael 12 Nov 2022
Cool! Check out opentimestamps. Batches up document digests into a merkle tree and commits the root in a block. Means its free to use because it can timestamp thousands of documents/files in a single transaction. And there's a command-line client!
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1 sat \ 1 reply \ @BITCOIN_CEO 13 Nov 2022
What's the use case for this? I can't think of any real world use case
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1 sat \ 0 replies \ @satoshisat OP 13 Nov 2022
A few but one that comes to mind is using it to verify an important document such as a Will is verifiable and not tampered with after the fact.
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1 sat \ 0 replies \ @satoshisat OP 13 Nov 2022
Found a way to do this for free* using Sparrow wallet: https://www.cornpharmer.com/adding-op_return-data-using-sparrow-and-embit/
*tx fees
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1 sat \ 0 replies \ @ln123 13 Nov 2022
very nice, thanks for sharing
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1 sat \ 0 replies \ @0308b86719 12 Nov 2022
My god that's expensive. You can do it yourself easily.
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