The more I think about interoperability in trust systems, the less I see it as a nice extra.
It’s basic infrastructure.
If signing systems cannot work together cleanly, that is not just annoying. It is risky. Fraud gets easier. Errors get harder to catch. Confusion becomes part of the workflow, which is always a great sign when trust is supposed to be the product.
That’s the part I keep coming back to.
Too much of this space still treats cross-system trust like something that can be patched later. A bridge here. A workaround there. Maybe a standards doc nobody reads. Very comforting.
But trust rules cannot live on assumptions.
They need to be explicit.
Because once verification starts moving across systems, weak interoperability stops being a UX problem. It becomes a structural one.
That’s why Sign feels relevant here.
Not because interoperability sounds cool.
Because shared trust standards are what keep the whole layer from turning fragile.