Jameson Lopp (@lopp) — Twitter Score 610 out of 1000

Jameson Lopp co-founded Casa, a Bitcoin key management and self-custody security company, and works there as Chief Security Officer. Casa was co-founded with Nick Neuman and Jeremy Welch. He self-identifies as a "Professional Cypherpunk" and is a vocal advocate for Bitcoin self-custody, individual financial sovereignty, and personal OPSEC. Jameson Lopp's Twitter Score is 610 out of 1000 (an Excellent rating) as of August 2026, placing him at rank #175 (top 0.1%) out of 483,944 accounts tracked on this platform, with 531,120 followers as of August 2026.

Jameson Lopp previously worked at BitGo as Lead Infrastructure Engineer from 2015 to early 2018 before co-founding Casa. He created Statoshi, an open-source fork of Bitcoin Core that logs Bitcoin node network metrics into a usable format, accessible at statoshi.info, and operates lopp.net, a Bitcoin education and information resource he built and maintains. Jameson Lopp has published 55,672 posts on the platform.

Jameson Lopp's company raised $21 million in a Series A round in May 2022, led by Acrew Capital, with participation from Positive Sum, Naval Ravikant, Scott Belsky, Avon Ventures, Tioga Capital, Stillmark, Castle Island Ventures, and Lerer Hippeau. In October 2017, an unidentified attacker called 911 falsely reporting a shooting and hostage situation at his home in a swatting incident; Jameson Lopp was away at the time and unharmed, but the event led him to adopt extensive personal security measures including anonymous LLCs, a decoy address, and off-grid living.

Jameson Lopp has conducted on-chain analysis of Bitcoin address poisoning attacks, scanning the entire blockchain and identifying approximately 48,000 suspected attacks since 2023, and maintains a public GitHub database of known physical attacks on Bitcoin and crypto asset holders. He is an advisor to AnchorWatch and serves as a Steering Committee Member of the CryptoCurrency Security Standard (CCSS) / C4. Jameson Lopp's portfolio includes Citrea and Magnolia. Jameson Lopp has been mentioned by 1,354 accounts, with 5,597 total mentions.

Who follows Jameson Lopp on X?

Jameson Lopp draws a focused audience within the Bitcoin and crypto security community. The accounts that follow Jameson Lopp include 2,583 founders, 559 angel investors, 1,090 influencers and 80 VCs, among them Balaji, Solana, Erik Voorhees, jesse.base.eth, Toly and Cobie.