J.P. Morgan has put a bank cash token on Ethereum, and its own research says the hardest problems with public blockchains sit below the layer a bank controls. Treasurers should ask that question of any bank that offers one.
The bank has published its own map of the problem
On 19 October, Kinexys by J.P. Morgan brought JPM Coin to Ethereum. Four months earlier, on 22 June, Kinexys and the MIT Digital Currency Initiative published a whitepaper on the barriers financial institutions meet on public blockchains. The summary lists four: transaction ordering risks, censorship concerns, receipt of unsolicited tokens and exposure to sanctioned entities.
The summary also says where the fixes live. Some controls can be built at the application and smart contract layers. The research finds that more comprehensive solutions often need changes at the blockchain protocol, network governance or regulatory level. Wee Kee Toh, Global Head of Insights at Kinexys by J.P. Morgan, said “there is a need for forward-looking research to anticipate and solve challenges.”
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I take that at face value, and it is useful. It also sets up my argument. A bank can issue a token on a public chain today, and the chain-level fixes its own researchers describe are still a matter for protocol developers, network governance and regulators. The product launches first and the fixes arrive on a different timetable.
The strongest objection
The fair reply is that banks already live with layered risk. A bank runs payments over networks it does not own, and clients accept that. The token is also restricted: the Ethereum release says JPM Coin is available to J.P. Morgan’s institutional clients, so the bank decides who holds it, and that answers part of the sanctioned-entity problem at the application layer. The whitepaper itself says some controls can be implemented there.
I accept that. The word in the whitepaper summary is “some.” Gating who can hold the token does not change how transactions are ordered on the network, and it does not give the bank a say over network governance. Those sit with others. A treasurer comparing this token with a conventional bank balance is comparing two things with different operators, and the sales conversation should say so.
What I would ask a bank before moving cash onto a public chain
Treasurers do not need to read protocol research, and they do need answers from the bank on four points. Each maps to the layers the whitepaper describes.
- Ask which of the four listed challenges the bank handles at the application or contract layer, and which it leaves to the network.
- Ask what the client agreement says about who carries the cost when a transfer is delayed or reordered on the chain.
- Ask what the client must do when an unsolicited token lands in its wallet, and whether the bank’s service touches it.
- Ask what happens to a client’s pending transfer when a sanctioned party interacts with the same chain.
The Ethereum release answers none of these, and I would not expect a launch announcement to. The answers belong in the client documentation, and clients should ask for them before they move balances. I made a related argument earlier, in Corporate Treasury Will Take Tokenised Deposits It Never Has to See: buyers will take the outcome and leave the plumbing to the bank. That holds only if the bank can say who is responsible at each layer of the plumbing.
A fifth item is worth adding for any bank, which is the exit. The Ethereum release describes JPM Coin as a deposit token for institutional clients and gives no redemption or fee terms. A treasurer who holds balances on a chain needs the terms for moving back to a conventional account written down, including timing and any cut-off. That is ordinary diligence for any new cash product, and a new settlement layer makes it more pressing.
Where this leaves the market
Other infrastructure is moving the same way, as in the first OTC swap on Canton referencing a tokenized S&P iBoxx index. Institutions will keep testing public and permissioned networks side by side. I expect the banks that win cash balances on public chains to be the ones that publish, early and in plain language, which layer holds each control. J.P. Morgan has done half of that by publishing the map. The other half is a client-facing statement of who carries each risk on Ethereum, and it should arrive before the balances do.
