LOCATION CHANGE!

We are back at Improving Inc this month. They have moved locations, double check the address below.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: Improving Inc 3033 Excelsior Blvd, Suite 180, Minneapolis, MN 55416. Follow the abstract orange art piece to the elevators, go up to floor 1, and its straight down the hallway in Suite 180.
• When: Tuesday May 12h. Social gathering starts at 5pm. Socratic Seminar from 5:30 - 7pm.
• Happy Hour at Steel Toe or somewhere else.

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

TBD

LOCATION CHANGE!

We are back at Improving Inc this month. They have moved locations, double check the address below.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: Improving Inc 3033 Excelsior Blvd, Suite 180, Minneapolis, MN 55416. Follow the abstract orange art piece to the elevators, go up to floor 1, and its straight down the hallway in Suite 180.
• When: Tuesday April 14th. Social gathering starts at 5pm. Socratic Seminar from 5:30 - 7pm.
• Happy Hour at Steel Toe or somewhere else.

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

TBD

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

This month’s theme will be vibe coding, OpenClaw, and agentic payments!

Bring your laptops!

Details

• Where: Improving Inc 3033 Excelsior Blvd, Suite 180, Minneapolis, MN 55416. Follow the abstract orange art piece to the elevators, go up to floor 1, and its straight down the hallway in Suite 180.
• When: Tuesday March 10th. Social gathering starts at 5pm. Socratic Seminar from 5:30 - 7pm.
• Happy Hour at Steel Toe.

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

Agents

• OpenClaw
• Star History
• NanoClaw
• IronClaw
• Open-Source AI Needs to Get Serious
• L402
• x402
• Google CLI
• Unhuman.deals
• clawi.ai
• Lobster University
• Cloaked Wireless
• Marmot Protocol in NanoClaw
• Marmot CLI

Vibe Coding

• Large Scale Deanonymization with LLMs
• OpenCode
• Claude Code
• Codex
• Anthropic Skilljar

Model Providers

• MapleAI
• Routstr
• OpenRouter
• Venice AI
• Venice AI Privacy
• Privacy Policies
• Qwen

Bitcoin

• Binohash
• Forkalicious
• BIP54 Compatible Block
• Social Replay Exploit
• Cake Wallet adds Lightning
• Lattice HD Wallets: Post-Quantum BIP32 Hierarchical Deterministic Wallets from Lattice Assumptions
• MtGox Hardfork

Misc

• Free Internetworking Peering System
• GrapheneOS Partners with Motorola
• Fedimint Lightning Gateway on Start9

LOCATION CHANGE!

We are back at Improving Inc this month. They have moved locations, double check the address below.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Also, this is our three year aniversary of BitDevs in Minneapolis!

Details

• Where: Improving Inc 3033 Excelsior Blvd, Suite 180, Minneapolis, MN 55416. Follow the abstract orange art piece to the elevators, go up to floor 1, and its straight down the hallway in Suite 180.
• When: Tuesday February 10th. Social gathering starts at 5pm. Socratic Seminar from 5:30 - 7pm.
• We will figure out a new spot for happy hour given this is our first time at this location.

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

Bitcoin

• TAPSCRIPT_v2 (Great Script Restoration)
• Disposing of “dust attack” UTXOs
• Sigbash v2
• IbisWallet
• BIP110 Signaling
• Addressing remaining points on BIP54
• Falcon Post-Quantum Signature Scheme Proposal
• Mitigating the Impact of the Quantum Freeze

Lightning

• deletefwdinghistory

Misc

• The BitVM Bridge
• Fedimint v0.10.0 - Lighthouse

Welcome! We are back at the Big Brothers Big Sisters building in Minneapolis this month while Improving Inc is moving. See below for address.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: 3110 N Washington Ave, Minneapolis
• When: Tuesday January 20th. Socratic Seminar from 6pm - 8pm.
• La Doña Cervecería Brewery for happy hour

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

Agenda

Bitcoin

• Bitcoin Core v30 Migration Bug
• Blockstream Jade Security Disclosure
• Hash Based Signature Schemes for Bitcoin
• SHRINCS
• BIP360 Update
• Bithoven
• HornetUTXO
• Swift Bitcoin

Misc

• Arc as a Channel Factory: Compressed Liquidity Management for Improved Payment Feasibility
• Arkade + Fedimint
• Silent Payments via Nostr

Welcome! We are back at the Big Brothers Big Sisters building in Minneapolis this month while Improving Inc is moving. See below for address.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: 3110 N Washington Ave, Minneapolis
• When: Tuesday December 9th. Socratic Seminar from 6pm - 8pm.
• La Doña Cervecería Brewery for happy hour

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

Agenda

Bitcoin

• Cluster Mempool merged to master
• Motion to activate BIP3
• Consensus bug on NBitcoin
• LNHANCE
• Taproot Swaps
• Propagation Delay and Mining Centralization: Modeling Stale Rates
• OP_CIV Post-Quantum Signature Aggregation

Lightning

• Zero-fee commitments using v3 transactions
• LND v0.20

Misc

• BOSS Challenge

Demo: Kyle - sats tracking app

Welcome! We have a new host this month while Improving Inc is moving. We will be at the Big Brothers Big Sisters building in Minneapolis. See below for address.

This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: 3110 N Washington Ave, Minneapolis
• When: Tuesday November 4th. Socratic Seminar from 6pm - 8pm.
• We will figure out a spot for Happy Hour afterwards

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• TC Bitcoin
• Twitter
• Website
• SimpleX

Agenda

Bitcoin

• Bitcoin Core v30 is released
• IDB Improvements in v30
• Perf Improvements
• Public Disclosure of 4 Bitcoin Core Security advisories
• Reduced Data Temporary Softfork
• BIP444 Gambling
• Stats on compact block reconstruction
• BIP Proposal: Limit ScriptPubKey Size >= 520 Bytes Consensus
• BIP: Chain Code Delegation for Private Collaborative Custody
• Arkade
• Arkade Launch
• OP_TEMPLATEHASH vs OP_CTV

Misc

• Golden: Lightweight Non-Interactive Distributed Key Generation
• Fedimint v0.9.0 Smooth Operator
• Ecash App
• DoS in Cashu

BitDevs for 9/9/25 has been cancelled. There was a fire in Northeast Minneapolis that is impacting Improving Inc. They have no power and no internet.

Instead we will be meeting at 6pm at Malcolm Yards for a more informal discussion.

Agenda (Canceled)

Bitcoin

• Presidio Bitcoin Quantum Summit Summary
• Taproot Script Path Spends are Quantum secure
• Confidential Script: Emulate soft forks using stateless TEE
• Utreexo BIPS
  • utreexo-accumulator-bip
  • utreexo-p2p-bip
  • utreexo-validation-bip
• Eclipsing Bitcoin Nodes with BGP Interception Attacks
• Sharing Block Templates

Lightning

• Disclosure: LND gossip_timestamp_filter DoS
• Rebuilding the Lightning Network’s Foundations

Misc

• Fedimint on Umbrel
• A survey of bitcoin yield: What’s the opportunity cost of Ark liquidity?
• Not in The Prophecies: Practical Attacks on Nostr
• el-tor

Welcome back! Big thanks to our host Improving Inc for providing the space! This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: Improving Inc 1515 NE Central Ave Minneapolis, MN 55413
• When: Tuesday August 12th. Socratic Seminar from 5pm - 7pm. Social begins at 5pm, seminar will start at 5:30pm.
• Happy Hour afterwards at Indeed Brewery

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• Twitter
• Website
• SimpleX

Agenda

• Introductions
• Socratic Seminar Questions
• Discussion

• Agenda

• Discussion

Bitcoin

• Coinjoin Implementation Comparisons
• peer-observer
• Chain Code Delegation: Private Access Control for Bitcoin Keys
• A simple backup scheme for wallet accounts
• Presidio Bitcoin Quantum Summit Summary
• Sub 1sat/vbyte transactions
  • Luxor Block Templates

Misc

• Leaf Splitting in Spark
• Simplicity activated on Liquid
• SimplicityHL
• Tor dropping OS spoofing: What to know and effects joeFi
• Fedimint v0.8.0
  • Start9 Fedimint

Welcome back! Big thanks to our host Improving Inc for providing the space! This meetup will be run in the format of a Socratic Seminar, inspired by other BitDevs Socratic Seminars across the country.

Details

• Where: Improving Inc 1515 NE Central Ave Minneapolis, MN 55413
• When: Tuesday July 8th. Socratic Seminar from 5pm - 7pm. Social begins at 5pm, seminar will start at 5:30pm.
• Happy Hour afterwards at Indeed Brewery

Rules

• No Photos
• Be Respectful
• Keep the conversation technical
• Chatham House Rule

Helpful Links

• Twitter
• Website
• SimpleX

Agenda

• Introductions
• Socratic Seminar Questions
• Discussion

News

• Plebfi July 26-27 Miami, FL

Bitcoin

• Fingerprinting nodes via addr requests
• What’s a good stopping point? Making the case for the capabilities enabled by CTV+CSFS
• The case for privatizing Bitcoin core
• Wallet Clustering Basics
• Easy Bitcoin Address Server
• OP_CAT enables Winternitz Signatures
• Sub 1 sat/vbyte transactions mined

Lightning

• LND BOLT12
• Wallet of Satoshi implements Spark
• Statechains

Demo: Carbine, a new Fedimint wallet