Available now via Unstoppable Domains
PBDX™
PBX routed calls. PDX routes people. PBDX: the onchain trust rail.
stands for
Public/Private
Blockchain
Domain
Extension
P
Public
/
P
Private
·
B
Blockchain
·
D
Domain
·
X
Extension
Routing infrastructure you already understand — now for blockchain.
Your .PBDX name is the address your transactions resolve to,
the verified identity your AI agents operate under,
and the rail your business runs on across any chain.
This is not a domain name.
Operator Position
You're claiming a root on the trust rail
A .PBDX root name is not a label. It is an operator position
on identity infrastructure — the root from which subdomains, agent identities,
delegated permissions, and Sourceacle attestations all inherit. Owning
yourname.pbdx means everything that operates underneath it
traces accountability back to you.
Root
yourname.pbdx
Entity
↓
division.yourname.pbdx
Agent
↓
agent.division.yourname.pbdx
Authority
↓
all layers → you ✓
Agentic Necessity
Your AI agents need an address — or they don't get trusted
AI agents are going to transact on your behalf. They'll move money,
sign attestations, negotiate contracts, and act autonomously across chains.
An agent without a verifiable identity operates anonymously —
and anonymous agents don't get trusted. A .PBDX name gives every
agent you deploy a blockchain-anchored identity that any protocol can verify
back to you.
Your agent
bot.yourname.pbdx
Verified by
↓
Sourceacle attestation
Traces to
↓
yourname.pbdx (human root) ✓
What each letter means
P
Public
Resolvable by anyone, anywhere
Your .PBDX name is publicly resolvable — any application, wallet, protocol,
or AI agent can look it up and route to it.
No private registry. No gatekeeper. The public blockchain is the source of truth.
P
Private
Controlled exclusively by you
Ownership is cryptographic and private — only you hold the keys.
No platform revokes it. No authority seizes it.
Public visibility. Private control. That's the Public/Private distinction.
B
Blockchain
Native to the chain, not bolted on
.PBDX lives on Polygon as an ERC-721 NFT. It is not a web2 domain
with blockchain features added — it is a blockchain asset that functions
as an address.
The permanence and the verification are the same thing.
D·X
Domain Extension
Third generation of routing infrastructure
PBX gave telephony human-readable call routing.
PDX gave transportation human-readable hub codes.
PBDX is the onchain trust rail —
names that resolve to wallets and agent identities.
Not a trading platform. Not a marketplace. The rails the Web3 economy routes over.
The infrastructure layer
.PBDX is the address.
Sourceacle is the trust.
A .PBDX name routes a transaction. Sourceacle is the protocol that makes the identity
behind it verifiable — attesting authorship, authority, and accountability across
every layer of the namespace.
Namespace depth — how the hierarchy works
4 layers
agent.entity.operator.pbdx
Attestation Protocol
Sourceacle verifies what the namespace declares
Every layer of a .PBDX namespace can carry a Sourceacle attestation —
binding identity to authorship, authority to accountability, and delegation
to a human-recognized root. The namespace tells you the structure.
Sourceacle tells you it's real. This is what separates .PBDX from every
TLD that stops at wallet resolution.
Fintech Rails
Built for programmable exchange at every depth
Whether you're operating a root rail, an entity on a rail, or an agent
acting three layers deep — Sourceacle's trust protocol travels with the
identity. Autonomous execution at any depth. Bio-dynamic accountability
anchored at the root.
Where — Namespace & Naming
Name.Guide
Understand how .PBDX naming works — root registrations, subdomain
inheritance, operator rails, and how to claim your place in the hierarchy.
Explore Name.Guide →
How — Trust & Attestation
Sourceacle
The protocol that makes .PBDX identities verifiable across fintech rails
and agentic systems.
Explore Sourceacle →
Foundational Doctrine
Physics of
Bio-Dynamic Exchange
In programmable systems, exchange may be automated, delegated, and agentically
executed. But authorship, authority, and accountability remain anchored to
bio-dynamic entities — humans and the human-recognized institutions acting through them.
Layer 01
Physics
The governing laws
The rules and constraints that determine how exchange behaves across
programmable rails. Physics does not bend to convenience. It governs.
Layer 02
Bio-Dynamic
The accountable origin layer
The living human layer from which authorship, legitimacy, liability, and
governance ultimately derive. Agents may act. Bio-dynamic authority answers.
Layer 03
Exchange
The transactional layer
The movement of value, identity, permissions, claims, and commitments
across rails. Exchange describes what is happening. Bio-dynamic governs who answers.
Autonomy executes.
Bio-dynamic authority answers.
Machine action can scale infinitely. Human accountability persists regardless.
.PBDX exists to make that accountability legible, addressable, and governable
across public and private rails.
Legal Precedent — Copyright
AI authorship decisions confirm the principle
When the U.S. Supreme Court declined to hear Thaler v. Perlmutter
in March 2026, it left standing the rule that works created solely by AI
without human authorship are not eligible for copyright protection.
Legal systems, even under accelerating automation, still seek a human
point of accountability. .PBDX is built on exactly that principle.
Agentic Systems — Governance
Agents transact. Humans stand behind the rail.
Wallets can act. Agents can transact. Subdomains can represent roles.
Attestations can travel. Permissions can be delegated. Workflows can automate.
But the rail still points back to a responsible entity. A .PBDX identity
is not just where actions happen — it is where accountability is addressable.
Identity Infrastructure
The namespace as accountability surface
.PBDX is programmable exchange infrastructure with human-accountable origin.
The namespace is not merely a label. It is the surface on which delegated
action occurs — while still pointing back to the human or legally recognized
entity that bears responsibility.
Semantic Authority
Coined. Defined. Canonical.
Bio-Dynamic Exchange is the accountable transfer of value, identity,
permissions, and claims across programmable rails, where autonomous action
remains anchored to human-recognized authority. Physics of Bio-Dynamic
Exchange is the formal doctrine governing that system — and .PBDX
is its rail implementation layer.
The future may be autonomous in operation,
but it remains bio-dynamic in accountability.
Physics of Bio-Dynamic Exchange — Nexus Cyber Systems, 2026
Why .PBDX is infrastructure-tier
Not a label
A root name is an operator rail
Most Web3 domains are vanity labels that point to a wallet.
A root .PBDX name is the trust rail that subdomains, agents, delegated
permissions, and Sourceacle attestations all inherit from.
You're not buying a name. You're buying the infrastructure
everything beneath it runs on.
Not a namespace
An attestation surface, built in
A standard Web3 domain resolves to a wallet. That's it.
A .PBDX name carries a Sourceacle attestation surface — identity,
authorship, authority, and accountability travel with the name.
That's the difference between a street address and a street address
with a notary built into the mailbox.
.dao tier
Priced for entities, not experiments
.dao is priced at infrastructure-tier because it represents
governance — the right to participate in decision-making structures.
.PBDX carries broader scope: identity, trust, delegation, and
accountability across every chain. The governance rail is one layer.
.PBDX is the rail the governance rides on.
Who this is for
Accountable entities operating on-chain
If you need a fun Web3 handle, there are cheaper TLDs for that.
.PBDX is for operators, businesses, institutions, and builders
who need their on-chain identity to carry trust, attribution,
and accountability — not just a wallet pointer.
One name.
Every chain. Every agent. Every attestation.
For operators, businesses, and builders who need accountable on-chain identity —
not just a wallet label. Available now via Unstoppable Domains on the Polygon blockchain.
Infrastructure-tier pricing.
Get Your .pbdx Name
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