Like ots but less efficient? https://opentimestamps.org/
Ladies and Gents, I’ve been working on a Bitcoin memorial site, basically time stamping a memorial and hashing it on the time chain, the only transaction is the 1 $100 transaction for the service, No data is stored on chain other than the hash it proves it happened. The site has a viewer that allows you to enter the transaction ID and prove and display memorial. There is also a downloadable viewer for you to do this in the future. This is my first time ever doing something like this, it probably has a ton of bugs, but please check it out. I could use feedback. If you create a memorial in the next two weeks and it’s respectful, send me your receipt and I’ll reimburse you 95% of what it cost you. https://everstonebtc.com/