ark-secp256r1 is used at run time in 23 crates (of which 1 optionally). It is a direct run-time dependency in 7 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) ark-secp256r1 version
38K 7 cairo-lang-runner ^0.4.0
8.4K cairo-native ^0.4.0
7.5K 3 blockifier ^0.4.0
7.4K 3 fastcrypto ^0.4.0
180 2 kvac ^0.4.0
stealth_address_kit optional ^0.4.0
550 18 dock_crypto_utils dev ^0.4.0
210 1 vb_accumulator dev ^0.4.0
1 verifiable_encryption dev ^0.4.0