The universal crypto rails debate
Crypto is becoming global financial infrastructure — but which rails will define it? Permissioned systems offer efficiency and control while permissionless ones preserve innovation and open access. As tokenization scales, this choice will set the defaults for the next financial era.
It wasn’t intentional, but looking back, a theme that’s emerging across recent issues of Open Money is this: crypto is becoming infrastructure. More specifically, crypto is becoming a kind of universal, or maybe "global" is the better word, financial infrastructure.
JPMorgan is moving dollars over tokenized rails. DTCC is launching blockchain-based transfer services for securities. Global banks are deploying onchain commercial paper. But these moves are happening with a caveat — and that caveat is the fight that will define the next phase of crypto and digital assets.
The question is: will the next generation of financial plumbing run on permissioned rails or permissionless ones?
Permissioned vs. permissionless: what's actually at stake
It’s easy to reduce this to ideology: decentralization vs. control, crypto vs. TradFi, but that misses the point. What’s playing out is a contest over what the base layer of the future economy should look like.
Permissioned rails are networks with access controls, identity gating, institutional compliance baked in, and central parties in charge. They’re optimized for enterprise priorities: privacy, reversibility, auditability, and continuity.
You see this clearly in JPMorgan’s Kinexys network, described as “bank-led blockchain infrastructure.” And it’s not just positioning: CoinDesk reports the bank’s tokenized dollars are already flowing through internal and client systems as production infrastructure, not a crypto experiment.
Permissionless rails, by contrast, are public networks where anyone can deploy, transact, or build. They’re structured for open participation, composability, and user custody. Instead of baking compliance into the base layer, they allow it to be added at the edges — through interfaces, protocols, and middleware.
This isn’t about rejecting rules. It’s about preserving an architecture that keeps the innovation surface open.
Daniel McGlynn
The new plumbing and the new valves
The past few weeks made this tension visible in headlines. DTCC, the US clearing giant, received SEC no-action relief to run a tokenization pilot for securities held at DTC. The framing sounds modern: blockchain-enabled entitlements, programmable transfer, digital rails.
But the details make it clear: this is a gated system. Wallets are registered and pre-approved. Transfers only happen between DTC participants. The blockchain isn’t the new system of record — it’s a transport layer under the existing custodial hierarchy. Legal commentary notes that reversals and exceptions remain possible.
Daniel McGlynn
The risk of sticky standards get sticky
These developments aren’t just technical upgrades. They’re standards-setting moments. And once standards harden, they define the shape of the ecosystem.
If tokenized dollars, treasuries, equities, and collateral all move to permissioned rails, open finance gets pushed to the margins — a zone where innovation happens, but where scale, integrations, and institutional flows live elsewhere.
The implications cascade:
- Fintechs integrate with permissioned rails because it’s more efficient
- Custody norms re-center around intermediated control
- Self-custody is no longer default — largely because of the two points above
- Composability becomes gated, replaced by formalized APIs that preserve institutional control
- Censorship and neutrality risks increase as network operators gain discretion
The Canton Network, which is building interoperable RWA tokenization infrastructure, frames the issue this way: the problem is fragmentation; the solution is cross-permissioned compatibility, not openness.
Daniel McGlynn
Optionality is the real feature
This is where the Open Money thesis comes in. Permissionless rails don’t just offer ideological clarity. They offer optionality. And that’s what drives real breakthroughs in market design.
Every major crypto-native product — stablecoins, DEXs, DeFi lending, composable asset protocols — emerged because no one could stop them. Compliance wasn’t discarded; it was modular. That modularity allowed experimentation to happen at the speed of software.
Permissioned rails may offer efficiency. But only permissionless rails preserve the right to build without needing to ask first. And that right is the foundation of open financial architecture.
Daniel McGlynn
Two recent examples that underscore this point
- JPMorgan’s dual-track approach. Reuters reports the bank is exploring crypto trading for institutional clients. That signals demand for public-chain exposure. At the same time, JPMorgan arranged onchain commercial paper using USDC on Solana — a hybrid model: public-chain settlement, institutional control.
- DTCC’s tokenization launch. The SEC’s green light is framed as forward-looking, but it reinforces the permissioned model. Everything is controlled — from eligible blockchains to approved participants. The upgrade modernizes plumbing, but preserves the trust hierarchy.
The window is now
Why does this matter today? Because this is the "default-setting" phase. Crypto infrastructure is being adopted by incumbents, not just by parallel builders.
And when incumbents adopt blockchain, they bring their governance with them. That instinct is understandable. But if those defaults stick, the result will be a tokenized system that keeps the gatekeeping of the old system intact.
You’ll get faster settlement. Maybe 24/7 markets. But not Open Money.