very cool but what prompted you to build this? op_return seems to work fine, no?
Had an idea for simple timestamps without OP_RETURN, just sending satoshis around:
https://github.com/vcavallo/timestamp-with-address-derivation/tree/master
https://blockstream.info/address/1DV6EzKmMNc5TQh2FfpFZGsPCL56YDAeiU
Discussion
i wanted to play with the smallest onchain data footprint / least-"feature"-rich way to get "specific content" + "specific time".
you can do it with just sending sats, no other ops required