A feeless machine ledger accumulates migrations
IOTA began in 2015 around a DAG called the Tangle and a promise of transfers without miners or per-transaction fees. That identity survived several incompatible ledgers. Chrysalis in April 2021 moved users to an EdDSA and UTXO layout; access depended on migration tools and keys, not merely a familiar ticker.
Stardust arrived on 4 October 2023 with native assets and a controversial supply fork. The supported branch set total supply at 4,600,000,000 IOTA to fund ecosystem programs and an Assembly-to-IOTA allocation. IOTA Classic retained the old supply but did not receive continuing Foundation tooling.
This history matters because 'IOTA' names the supported social and software lineage as well as a token balance. Forks can reproduce balances, while exchanges, wallets, developers and validators decide which state remains economically usable.