Many chains, one identity
This is the page that answers the question every multi-chain architecture has to answer, and most avoid: if everyone has their own chain, what do those chains have to do with each other?
The poor answer is "bridge them". A bridge can move assets, but it cannot move the far more expensive thing: who you are. In a world of many chains, the scarce thing is not one more chain — chains can be produced in bulk. The scarce thing is an identity that many chains recognise, so that a person does not have to rebuild themselves at every door.
That is why the shared network exists, and it carries exactly three jobs no private chain can do for itself:
| What the shared network carries | Why not leave it to each chain |
|---|---|
| Shared identity — one human, one identity, recognised by many chains | If every chain issues its own identity, one person becomes many people, and "one person, one share" loses its meaning |
| Governance — common rules and a place to settle disputes between parties | Inside a chain, the strongest party in it is the court; between chains there is no court at all |
| Value — a common unit to pay for keeping the network alive | If value lives inside each chain, each must fund its own security — which small chains cannot afford |
Figure 19 — Chains stay private, identity is shared. Remove the identity-anchoring arrows and what remains is islands with bridges.
Assets moving between chains still pass the gate at the border — the mechanism is under Compliance at the protocol layer below. The difference is that a bridge moves assets, while the shared network holds identity, and only the second turns many chains into one world instead of a heap of islands.
⚠️ Label: PROPOSED, and the hardest part is still ahead. The compliance gate inside consensus is running; a published shared identity scheme is not — it sits on the open list in Open questions and concerns. Put another way: the "many chains" half exists; the "one identity" half is what the project still has to prove.
In short: multi-chain is not an achievement — producing many chains is easy. The achievement is many chains that still recognise the same human being.