{"version":"1.0","type":"rich","provider_name":"Castle","provider_url":"https://castle.xyz","title":"black holes 2026 will not see this coming - by @square_root_anti_block on Castle","author_name":"square_root_anti_block","author_url":"https://castle.xyz/@square_root_anti_block","html":"<iframe src=\"https://castle.xyz/d/g0QWN1_b8Bff?embed=true\" width=\"450\" height=\"729\" frameborder=\"0\" scrolling=\"no\" credentialless allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" style=\"border-radius: 10px; max-width: 100%; aspect-ratio: 450/729; height: auto;\" title=\"black holes 2026 will not see this coming - by @square_root_anti_block on Castle\"></iframe>","width":450,"height":729,"thumbnail_url":"https://image.castle.xyz/19c68e62a16e29f71f51eb825cfa2e43?h=800&format=png8&ar=5:7"}