Immutable

Immutable X was a customised StarkEx rollup with fixed APIs for NFT minting, trading and withdrawal. Immutable’s current network is an EVM chain configured as “Immutable zkEVM”, chain ID 13371. Calling both simply “IMX” erases the February 2026 shutdown and the March migration that joined the old balances to a different execution environment.

The migration was non-custodial in the narrow sense that Immutable says it never held user private keys. It was not operator-free: contracts anchored disbursement to the final StarkEx vault root, while off-chain Stark-key mappings and permissioned actors advanced bounded migration phases. The design added proofs and a 14-day bridge-upgrade delay, then planned to renounce disburser roles.

Ethereum contract 0xf57e…79ff was deployed on 14 October 2021. Its code gives one address MINTER_ROLE, fixes a 2,000,000,000 cap and exposes no burn, pause, blocklist or upgrade. At review, totalSupply equals the cap. The constructor never assigned DEFAULT_ADMIN_ROLE, so the exposed role system has no documented route to replace the minter.

That makes the L1 quantity unusually legible: no contract call can take supply above two billion. It does not make distribution transparent. Unlocking removes a time barrier; it does not tell the reader whether Foundation, company, investor or reward wallets still control the units.

The whitepaper and the top of the tokenomics page allocate 51.72% to ecosystem development, 25% to project development, 13.86% to private sale, 5.42% to public sale and 4% to the Foundation. Ecosystem and project schedules both end on 31 October 2025.

Lower on that same page, the unlock table calls 277,139,000 tokens “Public Sale” and 108,400,000 “Private Sale”—the reverse of the chart and whitepaper. The totals still reach two billion, but the official record does not reliably pair each sale class with its schedule. A polished table cannot repair a contradictory source.

IMX on Immutable Chain is native gas; wrapped IMX at 0x3a0c…9c9d is a separate ERC-20 representation. The canonical bridge locks Ethereum IMX and credits native units, then burns them on the return path and releases L1 collateral. Its proxy contracts and Axelar messaging create a different control surface from the capped token.

Published controls cap four-hour IMX outflow at 539,052 and classify 107,230 IMX as a large withdrawal. Large exits wait 24 hours; flow-rate overflow sends withdrawals to manual review. These brakes may contain an exploit, but they also mean a holder’s exit timing is not determined by possession alone.

Passport is an embedded smart wallet, not a reserve behind IMX. Magic stores the user key and downloads it to the device; Immutable holds a guardian key. Both signatures are required. Immutable says it cannot move funds without user action, while the guardian can enforce rate limits, spending caps and fraud rules.

Full support is documented only for Immutable mainnet 13371 and testnet 13473. Ethereum is limited to ejection and unsupported EVM deposits may remain stuck. A smooth social login changes key recovery and policy; it does not turn the wallet, token and chain into one promise.

Token materials say 20% of protocol fees must be paid in IMX—or converted through market purchases—and reserved for active-staker rewards. They point governance toward Snapshot, but the reviewed current materials do not show binding on-chain execution, quorum rules or a vote that can remove bridge or company administrators.

The legal line is sharper. Digital World NFTS Ltd. in the British Virgin Islands gives the token notice; Immutable Pty. Ltd. is described as its independent exclusive technology service provider. IMX carries no equity, revenue, asset, redemption, liquidation or ownership claim against either. The token survived its first chain, but survival is utility continuity, not a corporate property right.