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e.proof.binding.f

The registry evidence does not bind the credential you presented, so I refuse the substitution.

Retrying the same thing changes nothing.

What a response says

A binding equality failed: {cause}.

The placeholders are filled from cause, which travel positionally in the args member of the response.

What to do

v2 ACDCs are unsigned; the anchored td and the ACDC's rd are the issuer's only commitments to the credential, and evidence that fails them proves a different credential's state, not this one's.

Where it sits

Sorter e — Error. The problem clearly defeats someone's intentions.
Obstacle e.proof. — Supplied material fails verification against a reference
Disposition f — Final. Retrying the same thing changes nothing.

A handler can match this code exactly, or by any prefix above it: e.proof., e.proof.binding..

Declared in heti.