{"chart":{"id":"collateral-by-protocol","slug":"collateral-by-protocol","title":"Wrapped BTC collateral by lending protocol","question":"Is wrapped BTC collateral concentrating in fewer protocols?","category":"lending","source":"Aave v3, Morpho Blue, Spark — Onchain BTC Research","dataQuality":"sample","methodology":"/methodology"},"answer":"Wrapped BTC posted as lending collateral totals 121,949 BTC across 3 lending protocols. The largest is Aave v3 at 47.3%, followed by Morpho Blue at 44.1%.","dataAsOf":"2026-09-26","resolution":"as-plotted","unit":"btc","dimension":{"id":"date","label":"Date","kind":"time"},"series":[{"id":"aave","label":"Aave 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