Wanted to greatly simplify my response.
I think the most powerful concept in the spec is attested status relationships, not necessarily financial infra specifically.
I spent some time in the blockchain world, where a lot of effort went into trying to build products backwards from tech capabilities. This resulted in a lot of rope-pushing: using expensive, slow, public databases for stuff that needed to be cheap, instant, and largely private.
This work got me thinking about these lessons with respect to AT Protocol. The protocol is excellent at portable identity, verified claims, decentralized discovery, and open reads. It’s not naturally suited to financial data custody, real-time transaction state, dispute resolution, or regulated operations. If we’re going to use AT Protocol, I’d be inclined to lean into these strengths.
The current spec has two layers: badge.blue (primitives) and network.attested.payment (payment vertical). But there’s a missing (or rather, subsumed) middle - and I think that is where the leverage lives.
I’d describe that missing middle as: attested status patterns
The current spec builds significant infra that badge.blue doesn’t provide - and most is not payment specific. This includes: multi-party coordination, role-based discovery, a trust model taxonomy, entitlement linking, and attestation lifecycle.
When an app wants to know whether to grant access, display a badge, or unlock content, it has to answer: does a party I trust attest that a status relationship exists between Actor A and Actor B?
And I think that’s it - and really valuable as-is. The protocol layer’s job is to answer this question in a verifiable, portable, and revocable way. The payment spec carries lots of info, but it isn’t the source of truth (or, indeed, the change authority) for most of it. The broker’s internal logic - the reason they’re willing to attest - is already off-protocol, as it should be.
The spec correctly notes that the cryptographic chain is independently verifiable. You don’t need to trust a broker to know they wrote a specific proof record. But the system does require trusting the broker’s judgment: that the underlying event occurred, and that conditions for the status remain valid. This is exactly why the trust model taxonomy exists, and it’s why broker selection is the real decision point, not payment verification.
Anyhow, we can still employ complex payloads (including financial transaction payloads) within this framework. But we can do more than financial transaction payloads, all based on the same structure:
- Subject: the actor whose status is being asserted
- Counterparty: the entity with respect to whom the status exists
- Broker: the trusted party that attests (and can revoke) status
This structure would enable use cases including:
- Membership: does this supporter hold an attested status with this creator?
- Certification: does this person hold an attested status with this institution?
- Endorsement: does this endorsement hold an attested status?
- Access control: does this requestor hold an attested status with this resource?
- Content validation: does this content hold an attested status with this editorial authority?
The on-protocol record says: this status relationship exists; here’s who attests it; here’s what it grants. The record may carry domain-specific metadata (payment amounts, credential types, access scopes, editorial details), but that metadata is opaque to the trust chain. Verifiers check the attestation, not the details.
My blockchain lesson wasn’t just “start with use cases, not technology” (though I think that is mostly true). Rather, it was more like:
Don’t put things on-protocol that the protocol can’t de-risk.
AT Protocol excels at portable, verifiable, decentralized claims about relationships. It does not de-risk financial data custody, regulatory compliance, real-time settlement, or dispute resolution. The payment spec wisely pushes all of those concerns to brokers and payment processors.
But the spec language, “payment proofs replace centralized payment databases”, overstates what the protocol layer actually does. It doesn’t replace payment databases. It does create portable attestation that a payment relationship exists, verified by parties the protocol layer trusts. That’s valuable, but it’s a narrower claim.
The strong framing is: AT Protocol is the right place to carry attested status relationships, regardless of domain. The basis for those attestations (whether financial, academic, social, or operational) lives off-protocol, where the actual risk is managed by parties equipped to manage it.
I learned a lot reading through the spec. My proposal is to recognize the spec includes a collection of powerful general-purpose patterns: multi-party attestation coordination, broker discovery, trust model taxonomy, entitlement linking, and attestation lifecycle - and these may have utility beyond transaction tracking.