Timechain
Search Donate
Sponsors
Cake Wallet, private Bitcoin and Monero walletSideShift.ai, no-signup crypto exchangeOrangeRock, non-custodial bitcoin spot and perps tradingBraiins Hashpower, buy and sell Bitcoin hashrateLayer Two Labs, drivechains for Bitcoin
S16 E8 · 1:58:29 · 18 Feb 2025

S16 E8: Alex Romanov on Beam, MimbleWimble & Privacy

Released at block 884,256
MP3 (163 MB)

The audio keeps playing while you browse the site.

Ask the Archive

Embed this episode

Paste this on your site or blog. It is a small player that streams from here: no trackers, no cookies, no ads.

Preview the player

Launched on January 3rd 2019, a whole decade after Bitcoin, Beam is the first MimbleWimble implementation to hit the markets. Unlike its smiley cousin Grin, Beam is organized more like a start-up, was more efficient in raising VC funding, and appears to focus more on smart contracts and interoperability with other chains.

In this episode, Beam CTO Alex Romanov explains everything about the network: what it is, how it works, and what it aims to accomplish with the MimbleWimble technology.

Time stamps:

Introducing Alex Romanov (00:00:24)
Beam's Launch and MimbleWimble (00:00:50)
Alex's Journey to Beam (00:03:01)
Beam vs. Monero vs. Zcash (00:04:25)
Technical Aspects of Mimblewimble (00:07:12)
Unique Properties of Beam Transactions (00:09:31)
Blockchain Analysis and Pruning (00:12:15)
Misconceptions About Mimblewimble (00:13:12)
Responding to Criticism (00:14:21)
The Impact of the Ivan Bogatyy Incident (00:18:01)
Discussion on UTXO Attacks (00:20:21)
Dandelion Protocol and Transaction Origin Obfuscation (00:21:28)
Decoy Inputs in Beam (00:22:42)
Integration of Lelantus-based Solutions (00:23:46)
Overview of Beam Wallet Features (00:24:42)
Introduction to Beam's Smart Contracts (00:28:20)
Confidential Stablecoin: Nephrite (00:30:59)
Comparison of Privacy Protocols (00:33:35)
User Experience and Usability in Privacy Coins (00:38:23)
DAO Voting System (00:39:26)
Staking and Layer 2 Development (00:40:00)
Popularity of Privacy Coins (00:40:41)
The Evolution of Privacy in Blockchain (00:43:24)
Beam vs. Ethereum (00:46:20)
User Need for Privacy (00:48:17)
Social Shift Towards Privacy (00:50:13)
Comparison of Beam and Grin (00:51:19)
Decentralized GitHub on Beam (00:52:11)
Beam's Smart Contracts vs. Ethereum (00:55:14)
Beam Wallet Interface (00:55:46)
Atomic Swaps & Asset Swaps Explained (00:56:22)
Native Swapping with Bitcoin (00:57:51)
Decentralization Concerns (00:59:01)
Messaging Layer in Beam Wallet (01:00:50)
Beam's Messaging System (01:03:53)
Maximum Anonymity Set Feature (01:10:47)
Exchange Withdrawal Addresses (01:13:33)
Long Addresses in Beam (01:14:29)
Roadmap Features (01:16:28)
Confidential DeFi Article (01:18:33)
Mining Beam with GPUs (01:22:01)
Community and Mining Pools (01:23:01)
Proof of Work vs. Proof of Stake (01:24:10)
Investment Pitch for Beam (01:25:12)
Funding Challenges in Privacy Projects (01:26:11)
Collaboration in Privacy Space (01:27:20)
Confusion Over Beam Tickers (01:29:30)
Final Thoughts on Beam's Development (01:33:36)
The Importance of Feedback (01:36:44)
Beam and Monero Bridge Collaboration (01:37:08)
Why not Build on Bitcoin (01:38:06)
Pruning the Blockchain (01:38:40)
Mimblewimble’s Harry Potter References (01:39:51)
Marketing Challenges in Crypto (01:43:20)
Price Action and Exchange Listings (01:44:10)
Need for Deeper Analysis (01:46:27)
The Scams Narrative (01:46:37)
Innovation through Competition (01:50:08)
Usability Challenges in Crypto (01:52:50)
Positive Features of Beam Wallet (01:54:05)
Local First Design in Beam (01:54:27)
Ethereum Wallets and Features (01:55:21)
Local Application Architecture (01:55:53)
Hardware Wallet Integration (01:56:20)
Decentralization Goals (01:56:56)
Privacy vs. Usability Trade-off (01:57:08)

Verify this episode

This is the SHA-256 fingerprint of the MP3 as published here, timestamped in the Bitcoin blockchain with OpenTimestamps. If one byte of the file changes, the fingerprint changes.

SHA-256
7367dce8b3675e67a4a0ca1232c6670d17847592ceae7572af96dc69992478de
Proof
2025-02-18_s16_e8_alex_romanov_beam_mimblewimble_privacy_-_18.02.2025_01.06.mp3.ots · all episode hashes (proof)
Status
Anchored in Bitcoin block 974,312
How to check it yourself
  1. Download the MP3 and the proof into the same folder.
  2. Run sha256sum 2025-02-18_s16_e8_alex_romanov_beam_mimblewimble_privacy_-_18.02.2025_01.06.mp3 (on a Mac: shasum -a 256 2025-02-18_s16_e8_alex_romanov_beam_mimblewimble_privacy_-_18.02.2025_01.06.mp3). The result must match the SHA-256 above.
  3. Install the OpenTimestamps client (pip install opentimestamps-client) and run ots verify 2025-02-18_s16_e8_alex_romanov_beam_mimblewimble_privacy_-_18.02.2025_01.06.mp3.ots. It hashes the MP3 again and checks the proof against your own Bitcoin node, then prints the block and the date the file existed by. Without a node, ots info 2025-02-18_s16_e8_alex_romanov_beam_mimblewimble_privacy_-_18.02.2025_01.06.mp3.ots shows the block height to look up in any block explorer.

Keywords from the feed: Bitcoin, Beam, privacy-focused cryptocurrency, Mimblewimble protocol, Alex Romanov, CTO of Beam, cryptocurrency space, Monero, Zcash, transaction sizes, privacy features, misconceptions, criticisms, historical context, competition, blockchain sizes, non-private transactions, scalable solution, compact blocks, efficient transaction processing, UTXO set, community-driven projects, Grin, traceability, Dandelion protocol, obfuscates transaction origins, decoy inputs and outputs, Lelantus-based technology, Beam wallet, NFT gallery, decentralized exchange (DEX), voting mechanism, atomic swaps, Nephrite stablecoin, confidential DeFi, proof of work, proof of stake, funding challenges, technological innovations, community engagement, local-first design, decentralized applications, user-friendly interfaces, accessibility, Ethereum Virtual Machine (EVM), smart contracts, privacy solutions, anonymity set, messaging layer, distributed hash tables, market confusion, collaboration, educational efforts, cryptocurrency adoption, private keys, self-custody, technical advancements, user behavior, operational security, speculative trading, privacy guarantees, on-chain behavior

0:000:00