Coinbase converts GYEN to USDC as GMO-Z.com Trust retires coin

Coinbase has announced that support for the yen-linked GYEN stablecoin is being wound down as its issuer, GMO-Z.com Trust Company, retires the product. According to a company statement dated October 26, 2026, sending and receiving GYEN on the Coinbase platform was disabled starting October 26, and remaining customer balances are scheduled for conversion into USDC between October 26 and October 30.

Conversion Mechanics and Fees

The exchange stated that the conversion will occur at the prevailing market rate at the time of the transaction, rather than at a universal promised yen-dollar parity. Coinbase will not charge a transaction fee for this conversion process. The company noted that customers who wished to retain their GYEN holdings had an earlier withdrawal window available before the current conversion period began.

Once the conversion process is complete, Coinbase will no longer support GYEN deposits or withdrawals. The company warned that any unsupported deposits sent to the platform after the cutoff may not be recoverable. The distinction between a token being technically transferable on a blockchain and being accepted by a specific custodial service is central to this operational change, as practical usability relies on issuer decisions and exchange support rather than just on-chain functionality.

Issuer Decision and Customer Guidance

GMO-Z.com Trust Company is the entity responsible for retiring the GYEN product. The announcement highlights that the lifespan of a digital asset depends on factors beyond its underlying blockchain, including issuer product decisions and exchange support policies. Stablecoins, while often discussed as permanent digital representations of currency, rely on banks, compliance programs, redemption arrangements, and secondary venues for practical usability.

Coinbase advised affected customers to inspect completed conversions and retain exchange records for financial reporting or tax purposes. The company also advised against sending additional GYEN to a disabled deposit address. The status notice serves as the primary communication for Coinbase customers regarding these operational changes, and the specified time window for the conversion must be observed precisely to ensure proper processing of balances.