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An aggregate signature lets multiple signers each sign a different message, then combine everything into one compact signature that proves who signed what. Tim Ruffing explains the primitive behind Cross-Input Signature Aggregation. Full talk at Eurocrypt below. ⬇️
0:29
blksresearch's profile picture

An aggregate signature lets multiple signers each sign a different message, then combine everything into one compact signature that proves who signed what. Tim Ruffing explains the primitive behind Cross-Input Signature Aggregation. Full talk at Eurocrypt below. ⬇️

Blockstream Research

12,741 views • 2 months ago

At OPNEXT 2026, our Director Jonas Nick explained how a soft fork could add post-quantum security to Bitcoin's Taproot tree. Outputs commit to both Schnorr and PQ keys. Schnorr signatures stay cheap. The PQ path sits dormant until a cryptographically relevant quantum computer emerges.
0:53
blksresearch's profile picture

At OPNEXT 2026, our Director Jonas Nick explained how a soft fork could add post-quantum security to Bitcoin's Taproot tree. Outputs commit to both Schnorr and PQ keys. Schnorr signatures stay cheap. The PQ path sits dormant until a cryptographically relevant quantum computer emerges.

Blockstream Research

10,331 views • 3 months ago

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