Location

The event will be hosted at NodeNBO:

Gigiri, Nairobi

nodenbo.com

Map

Announcements

Join us on our Bitcoin Socratic Seminar #32. A special thank you to our sponsor Btrust for food and refreshments.

Reminders

• We prefer no photos and no videos during the event
• Chatham House Rule
• Leave the meeting space as clean as you found it
• Suggest topics for the next Socratic Seminar! Where to find topics?

Topics

Bitcoin

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MC: Brandon

• Bitcoin Core 32.0 release candidate — rc1 tagged Sep 14, final release targeted for Oct 10; parallel input fetching during block validation (up to ~3x faster IBD in testing), and 29.x reaches end of maintenance
  • -walletnotify command injection fix (#36048)
  • Unbounded memory growth in the replacement HTTP server (#36123) — sixteen REST connections grew memory by 3.2 GB before the fix
  • Block templates enforce BIP54 minimum timestamps (#35949)
• Bounds on chain length with BIP-54 timewarp fixes
• BIP332: stale chain tip relay finalized — follow-up to the stale block tips draft discussed at #31
• Implicit deletions and improvements in Utreexo IBD — uses SwiftSync hintsfiles to cut ~200GB of deletion proofs during IBD to near-zero
• Draft BIP: unspendable taproot internal keys in descriptors
  • Unspendable keys in descriptors
• Universal opt-in replay protection? — revived after the BIP-110 fork-off

MC: Frank

• PQC output type discussion — bundling cross-input signature aggregation with P2TRv2, wallet adoption, and hash-based signature fees
  • SHRINCS hash-based signatures draft BIP — 48-byte pubkeys, 548-byte stateful signatures with a 5,777-byte stateless fallback
  • DropKick: a commit/reveal rescue for non-PQC coins
  • Standardizing an exposure classification for existing outputs (pre-BIP)
• Block-wide signature aggregation via SNARKs
• Comparing Bitcoin covenant proposals for vaults
  • Covenants.diy: a node editor for covenant scripts
  • Depots: theft-proof, self-custodial Bitcoin for billions of users
• A design bar for coercion-resistant custody

Mining

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MC: Kurt

• Building Bitshoka

Lightning Network

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MC: Isaack

• Core Lightning 26.06.7 security release — the patch promised at #31; source withheld 14 days, verifiable via reproducible builds
  • Disclosure: crashing CLN with a flood of pings — OOM without needing a channel, fixed with backpressure in connectd
  • Responsible disclosure and white hacking: it’s about caring
• LND v0.21.3-beta — peer resource limits, ping rate limiting, channel_update encoding fix, dust HTLC resolution
  • LND #11061: BOLT12 invoice signing and verification
• LDK v0.3-rc1 — RBF for splices, splice-in and splice-out in one splice, anchors by default
  • LDK v0.2.6 security release — deserialization DoS and splice fee-inflation fixes
• Eclair 0.14.3 security release — fixes in channel closing, splicing and on-the-fly funding
• PQLN: post-quantum security for Lightning’s off-chain surfaces
• Towards a k-of-n Lightning node

eCash

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MC: Martin

• Fedimint v0.12.0 “Second Nature” — v2 modules (lnv2, mintv2, walletv2) default for new federations, Iroh 1.0, UniFFI bindings for Kotlin and Swift
  • Fedimint v0.12.1 / v0.11.3 — Lightning gateway LNv1 payment bug fix; gateway operators urged to upgrade
• CDK v0.18.0 — database-authoritative mint config, NUT-16 animated QR tokens, deterministic DLEQ nonces
  • CDK v0.18.1
• Institutional-grade spending policies for statechains

Show & Tell

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MC: Vlad & Collin

• Kesh Labs

MC: Isaack

• Payment Channels

Upcoming Events & Announcements

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MC: Sharon

• Africa Bitcoin Conference 2026

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Submit suggestions for next meeting!

Issues on Github: https://github.com/BitDevsNBO/bitdevsnbo.org/issues