{"chart":{"id":"lending-collateral","slug":"lending-collateral","title":"Wrapped BTC posted as lending collateral","question":"Which lending venues actually hold wrapped BTC as collateral?","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 5 lending venues. The largest is Aave v3 · Ethereum at 45.0%, followed by Morpho Blue · Base at 31.6%. The three largest account for 89.1%.","dataAsOf":"2026-09-26","resolution":"as-plotted","unit":"btc","dimension":{"id":"venue","label":"Lending venue","kind":"category"},"series":[{"id":"collateral","label":"Wrapped BTC posted as collateral","colorToken":"data-lending","points":[{"x":"Aave v3 · Ethereum","y":54914.97},{"x":"Morpho Blue · Base","y":38522.01},{"x":"Morpho Blue · Ethereum","y":15236.6},{"x":"Spark · Ethereum","y":10497.41},{"x":"Aave v3 · Base","y":2777.72}]}]}