CAP-0080 - add is on curve host functions #1862
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Pull request overview
This PR extends CAP-0080 to add three new host functions for checking curve membership of points. The functions provide a cheaper way for ZK applications to validate that points lie on their respective curves.
Changes:
- Added three new
is_on_curvehost functions for BLS12-381 G1, BLS12-381 G2, and BN254 G1 - Updated the total count of proposed host functions from 6 to 9
- Added motivation explaining the need for curve membership validation in ZK applications
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
jayz22
approved these changes
Jan 28, 2026
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Context - https://github.com/orgs/stellar/discussions/1826#discussioncomment-15598903