You might also be able to just write out instructions. E.g. it seems clear that each glyph encodes 11 bits of information because there are 11 potential strokes in each glyph. The table says what stroke to apply when the bit is 00000000001, 00000000010, 00000000100, etc., so you can probably just write down 11 indicators of what the strokes mean and a copy of the actual bip39 list and a sentence or two saying "go through the word list and increment an 11 bit number every time you encounter a word. The glyphs are the words you need." Then you'll have everything you need to reconstruct your seed.

Funny how none of the bitcoiners thought to back this up on the BTC blockchain ... and instead think about saving it to PDF/Email...as if those won't be lost with time potentially.

I'd probably do as supertestnet says and backup the algorithm which explains how to get the binary bits out of glyphs and how that relates to bip39 list, which I assume I'd be able to pull up from the internet at any point in the future.

Then I'd probably link to the block/tx where I stored the data to "decrypt" the cypher.

If your data no longer exists on Bitcoin Ledger, most likely your bitcoin you're attempting to recover won't be worth anything anyways at that point... so I'd consider this a reasonable way to back up this information long term.

Reference Talk: "Jason Lowery - Softwar (MIT 2023)"

hahaha good point :)