Overview UltrafastSecp256k1 v4.0 is a high-performance secp256k1 engine built for evaluation as an optional secondary backend for Bitcoin Core. The goal is not to replace libsecp256k1, but to make it possible to measure, compare, and selectively enab...

Overview UltrafastSecp256k1 v4.0 is a high-performance secp256k1 engine built for evaluation as an optional secondary backend for Bitcoin Core. The goal is not to replace libsecp256k1, but to make it possible to measure, compare, and selectively enab...

v3.67.0 — CAAS hardening, multi-CI reproducible builds, OpenSSF Scorecard cleanup, Zenodo + funding outreach This release closes the remaining CAAS gap-closure roadmap, lands the multi-CI reproducible-build attestation surface, brings the OpenSSF Sco...

I'll start with the bug that makes the case. I was porting UltrafastSecp256k1https://github.com/shrec/UltrafastSecp256k1 — my secp256k1 cryptographic library — to RISC-V. New architecture, new compiler behavior. The code compiled fine. Tests passed....

v3.60.0 — Audit Campaign Wave II · ZK Layer · Full GPU Parity · Wallet API · Performance > Release date: 2026-04-04 > Previous release: v3.50.0 2026-03-XX > Commits since v3.50.0: 50+ > ABI-compatible with v3.50.x — drop-in upgrade Security & Cor...

v3.60.0 — Audit Campaign Wave II · ZK Layer · Full GPU Parity · Wallet API · Performance > Release date: 2026-04-04 > Previous release: v3.50.0 2026-03-XX > Commits since v3.50.0: 50+ > ABI-compatible with v3.50.x — drop-in upgrade Security & Cor...

Why UltrafastSecp256k1? > A detailed look at what sets this library apart — not just in speed, but in engineering discipline, audit culture, and verified correctness. 1. Audit-First Engineering Culture Most high-performance cryptographic librari...