Kraken Bitcoin

Our assessment

Kraken Bitcoin holds $443m and scores 3.1 — the lowest of the fifteen bridges in this comparison. That is a striking result for a product from an exchange that scores 9.7 in our exchange rankings, and it is worth explaining precisely.

The exchange and the wrapper are scored separately

Kraken publishes per-account proof of reserves, holds a MiCA authorisation and documents its fees in full — which is why it leads our exchange table. This wrapped Bitcoin product publishes almost none of that: no audit report, no wrapper-level proof of reserves, no documented mechanics at conventional addresses. Our rubric scores the product in front of us, not the brand behind it.

Why brand transfer is the wrong inference

Users routinely assume a reputable operator's every product carries the same standards. Our checks across this comparison show that assumption failing repeatedly — secondary products get less engineering attention, less review and less documentation than flagships. That pattern is exactly what a rubric like this exists to surface.

What would fix it

Publishing an audit report and a wrapper-specific proof of reserves showing bitcoin held against tokens issued would move this from the bottom of the table to near the top. The operator already does both for its exchange business.

Who it suits

Users wanting wrapped Bitcoin with published evidence should use WBTC. Kraken customers who want this specific product should treat it as an exchange custody claim and size it accordingly.