Wiki / People / Eric Lombrozo

Eric Lombrozo

From the Bitcoin Takeover Wiki · ✓ 4 sources · 2 podcast anchors · built 2026-11-13

Bitcoin developer and co-author of the SegWit BIPs 141 and 144 and of the CHECKSEQUENCEVERIFY proposal, and an early Ethereum participant.

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The wiki's angle: Lombrozo's name is first on the SegWit consensus BIP, the soft fork the whole 2015–2017 war was fought over, and he also appears in Ethereum's early contributor list.[1][3]

Contents

  1. Specifications
  2. On the show
  3. References

Specifications

The bitcoin/bips index lists Eric Lombrozo, Johnson Lau and Pieter Wuille as authors of BIP-141, “Segregated Witness (Consensus layer)”, and Lombrozo with Wuille on BIP-144, its peer-services companion[1]. The index also lists him on BIP-112 (CHECKSEQUENCEVERIFY), BIP-83 (dynamic hierarchical deterministic key trees), BIP-123 (BIP Classification) and BIP-124[1]. His GitHub account, CodeShark, was created in July 2011[2].

On the show

Vlad noted on Bitcoin Takeover that Lombrozo appears on the Early Days of Ethereum contributor grid, calling him “one of the architects of SegWit”[3]. In another episode Vlad cited Lombrozo's argument that in 2016 it was unclear whether Bitcoin would survive another year[4].

References

  1. primarybitcoin/bips README (BIP index with authors) [archived]
  2. primaryGitHub profile CodeShark (Eric Lombrozo), account created 4 Jul 2011 [archived]
  3. episodeS17 E42: Vlad on Eric Lombrozo in Early Days of Ethereum▶ listen at 3:50:03timestamp transcript-derived, pending a listen [archived]
  4. episodeS17 E19: Vlad on Eric Lombrozo and 2016▶ listen at 3:51:09timestamp transcript-derived, pending a listen [archived]

Related

Segregated Witness
The 2017 soft fork that moved signatures out of the legacy block, fixed malleability and became the centre of
Pieter Wuille
Bitcoin Core developer (sipa), co-founder of Blockstream, and author or co-author of the BIPs behind SegWit, v
Block size war
The 2015–2017 fight over Bitcoin's 1 MB limit that produced the first durable chain split.
Ethereum Classic (comparison — not a Bitcoin fork)
Not a Bitcoin fork: the original Ethereum chain that kept running when the Ethereum Foundation's July 2016 har
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