Lifetime access. Runs the real SeedSigner firmware in your browser. No video fluff. Written by the person who built the silent-payments and MuSig2 features. Founders pay EUR 99 now, EUR 149 once it opens. Refund any time before opening. Opens Q4 2026.
Seven modules
- Single-sig on SeedSigner
- Multisig 2 of 3 with Sparrow
- MuSig2
- Silent payments receive and spend
- BIP-353 payment names
- Backups and inheritance
- Verifying firmware