Tim Ruffing is a cryptographer who has contributed foundational work to Bitcoin's signature infrastructure, including co-authoring deployed Bitcoin Improvement Proposals on Schnorr signatures and multi-signature schemes. Tim Ruffing's Twitter Score is 71 out of 1000 (a Good rating) as of September 2026, ranking #11,572 (top 5%) among 489,627 tracked accounts.
Tim Ruffing co-authored BIP 340, "Schnorr Signatures for secp256k1", a deployed standard that brought Schnorr signature support to Bitcoin, and BIP 327, "MuSig2 for BIP340-compatible Multi-Signatures", a deployed protocol enabling efficient two-round multi-signatures on the same curve. Both proposals are active parts of the Bitcoin protocol. Tim Ruffing also co-authored the IACR paper "MuSig2: Simple Two-Round Schnorr Multi-Signatures", providing the academic foundation for the BIP 327 construction. Beyond the BIP process, Tim Ruffing is a contributor to libsecp256k1, the C library used for elliptic curve operations in Bitcoin Core.
Tim Ruffing previously worked at Blockstream, where much of this cryptographic research was conducted. Tim Ruffing's account has published 5,859 posts and has 6,743 followers as of September 2026. Tim Ruffing has been mentioned by 106 accounts, with 234 total mentions.
Who follows Tim Ruffing on X?
The accounts that follow Tim Ruffing include 330 founders, 43 angel investors, 96 influencers and 3 VCs. Among them are Nic Carter, Hasu, Udi Wertheimer, Georgios Konstantopoulos, Dan Robinson and Eric Wall.