Marek Narozniak is a Polish physicist who works on a MimbleWimble implementation that can get added to Bitcoin via extension blocks to become a privacy layer. He also specializes in quantum computing, and busts some FUD about their threat. Time stamps: Introduction to Mimblewimble and Grin (00:00:40) The Privacy Model of Mimblewimble (00:02:07) What is Mimblewimble and Grin? (00:03:47) Scalability and Growth of Grin (00:05:18) Marek's Interest in Grin and Quantum Computing (00:07:16) Challenges and Funding of Grin Development (00:13:36) CoinJoin on Bitcoin (00:15:41) CoinJoin and Privacy in Mimblewimble (00:16:49) The Relevance of Mimblewimble and Grin to Bitcoin (00:22:18) Bitcoin Philosophy (00:24:15) Scalability and Design of Grin (00:25:37) Compatibility with Bitcoin (00:27:31) Quantum Computing and Bitcoin (00:38:31) Quantum Resistance in Blockchain Networks (00:45:02) Node Software and Wallet Connectivity (00:46:27) Running a Node and Raspberry Pi (00:47:49) Quantum Computing and Qubits (00:50:02) Quantum Computers and Bitcoin (00:52:07) Bitcoin and Cryptography (00:52:42) Bitcoin and Investment (00:56:01) Bitcoin Adoption and Use Cases (00:57:31) Polish Bitcoin Association and Government Perception (01:02:46) Government Digital Signature and Privacy (01:04:32) Privacy and Bitcoin (01:05:44)