a tile dies when its pool's SOL reserve falls under 1 SOL. the indexer sees it on the next read of that pool, marks the tile dead, works out how much SOL buyers put in against how much sellers took out across the token's whole life, reads what was left in the creator's fee vault, and the program burns held coin and writes one memo to chain. the memo is the obituary. it is signed by the program's keeper and it cannot be edited.
slots lived, in bands.
under 1,000 [········································]
1,000 to 5,000 [········································]
5,000 to 20,000 [········································]
20,000 to 50,000 [········································]
50,000 to 150,000 [········································]
150,000 to 400,000 [········································]
400,000 to 1,000,000 [········································]
1,000,000 to 3,000,000 [········································]
over 3,000,000 [········································]
newest first.