Crypto Index Mortality Ledger: Discontinued Crypto Indices

Across four tiers, the census totals roughly thirty distinct index families launched since 2015. Sort them by fate rather than methodology and the pattern is stark: the discontinued (Bletchley, CIX100, HB10, OK06, Bitmain, Coinbase Index Fund v1, BNC’s franchise, most tokenized thematics), the pivoted-and-rebranded (MVIS, CoinDesk’s family under successive owners), the perpetually young (every TradFi entrant, 2021 or later, marketing back-tested history), and the survivor. One broad-market index has published continuously, under one unchanged methodology, through every winter since January 2015.

Longevity under fixed rules is not a marketing claim. It is the only index property that cannot be back-tested.