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Blockchain LabTHE VENTURE STUDIO

BLOCKCHAIN LAB BRIEFING · STABLECOINS

A Tokenised Deposit Is a Bank Liability. A Stablecoin Is Someone Else’s.

J.P. Morgan’s Kinexys deposit token and a public dollar stablecoin can both move a dollar-denominated balance. One is a deposit at a bank. The other is a claim on a non-bank issuer’s reserve. Treasury systems should not share a ticker for them.

2 October 2026

All briefings

01

What happened

J.P. Morgan describes Kinexys, formerly Onyx, as a platform for blockchain deposit accounts and for a deposit token that represents a deposit claim on the bank, usable by institutional clients. That is a different instrument from a stablecoin issued by a trust company against a reserve of Treasuries and bank deposits held for token holders.

Both can be programmable. Programmability does not unify the balance sheet.

02

Why it matters

A treasury that wants money that stays inside the banking system is asking for a deposit. A treasury that wants a token accepted by a counterparty who is not a customer of that bank is asking for something else, with someone else’s credit.

Product copy that says on-chain dollars covers both and informs neither. The failure modes differ: a bank resolution on one side, an issuer and reserve failure on the other.

03

The operating layer

Split the ledger accounts. Record the obligor, whether the balance is a deposit, whether it is covered by a deposit guarantee scheme, who may hold it, and whether it can leave the bank’s platform. A permissioned deposit token that cannot be sent to an arbitrary wallet is not a bug. It is the product.

Do not bridge a deposit token onto a public chain and assume the deposit guarantee came with it.

04

What is verified

J.P. Morgan’s public Kinexys materials describe blockchain deposit accounts and a USD deposit token for institutional use. They are not a statement of current eligibility for any reader.

05

What remains unclear

Which clients can hold the deposit token, on which days it settles against which payment systems, and how it is treated in the bank’s resolution plan.

06

The catch

The prestige of the bank is not a reason to model the token as cash in a system that also holds unrelated stablecoins. Mixing them in one balance will produce a reconciliation you cannot explain to an auditor.

Not an offer to open an account, and not a comparison of yields.

WATCH

What builders should watch

  1. 01The legal obligor for each dollar-denominated token you support.
  2. 02Whether the claim is a deposit, and with which bank.
  3. 03Who is allowed to hold it, and on which rails it can leave.

BOTTOM LINE

If the obligor is a bank and the claim is a deposit, call it that. Do not call it a stablecoin because it moves on a ledger.

Sources

Blockchain Lab uses public social posts as reporting leads, not as proof. Every published briefing is assessed against primary sources, available documentation and relevant technical context. Social engagement is not used as evidence of the underlying claim.

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