SF Bitcoin Devs

Hosts of technical/developer-focused bitcoin meetups in San Francisco. Videos of previous talks:

[SF Bitcoin Devs @SFBitcoinDevs]

This Thursday in SF: Socratic Seminar #70 from SF Bitcoin Devs at Presidio Bitcoin.

Bitcoin Core PRs, network stats, and research papers — debated live.

Thu May 14 · 6 PM PT
38 Keyes Ave Suite 300

https://t.co/mpZBjvucBp

[SF Bitcoin Devs @SFBitcoinDevs]

Meetup tomorrow
6:00
@DigitalGarage

https://t.co/gfhD8MEsWv

[SF Bitcoin Devs @SFBitcoinDevs]

@benthecarman @puckberley Well well well ;)

[SF Bitcoin Devs @SFBitcoinDevs]

Starting 30 minutes earlier than usual. 6:00 Thursday 3/5

https://t.co/kQ8Cv9lGHj

[SF Bitcoin Devs @SFBitcoinDevs]

Socratic Seminar Tonight At Stanford

https://t.co/syDaSuiiue

[Bitcoin Optech @bitcoinoptech]

Liam Eagen joined Optech to discuss Newsletter #390:

News
● Argo: a garbled-circuits scheme with more efficient off-chain computation (0:48)
● LN-Symmetry update (26:05)

Selected Q&A from Bitcoin Stack Exchange
● What is stored in dbcache and with what priority? (34:21)
● Can one do a coinjoin in Shielded CSV? (24:02)
● In Bitcoin Core, how to use Tor for broadcasting new transactions only? (36:47)
● Brassard-Høyer-Tapp (BHT) algorithm and Bitcoin (BIP360) (38:31)
● Why does BitHash alternate sha256 and ripmed160? (39:24)

Releases and release candidates
● Libsecp256k1 0.7.1 (41:09)

Notable code and documentation changes
● Bitcoin Core #33822 (42:59)
● Bitcoin Core #34269 (44:50)
● Core Lightning #8850 (47:38)
● LDK #4349 (49:16)
● Rust Bitcoin #5470 (50:54)
● Rust Bitcoin #5443 (51:26)
● BDK #2037 (52:51)
● BIPs #2076 (55:49)
● BIPs #1500 (59:39)

[SF Bitcoin Devs @SFBitcoinDevs]

Kick off 2026 with Socratic Seminar! This Thursday 1/8

https://t.co/4UP25N8XuG

[Bitcoin Optech @bitcoinoptech]

Anthony Towns (@ajtowns) and Mikhail Kudinov (@kudinov_mikhail) joined Optech to discuss Newsletter #386.

A notice about the wallet migration bug in Bitcoin Core was discussed at (56:30)

News
● Building a vault using blinded co-signers (1:04:09)
● Peer feature negotiation (1:40)

Changing consensus
● Year 2106 timestamp overflow uint64 migration (1:07:47)
● Relax BIP54 timestamp restriction for 2106 soft fork (1:11:36)
● Understanding and mitigating a CTV footgun (1:16:30)
● CTV activation meeting (1:21:00)
● `OP_CHECKCONSOLIDATION` to enable cheaper consolidations (1:23:11)
● Hash-based signatures for Bitcoin's post-quantum future (20:47)

Releases and release candidates
● BTCPay Server 2.3.0 (1:28:29)

Notable code and documentation changes
● Bitcoin Core #33657 (1:30:25)
● Bitcoin Core #32414 (1:33:23)
● Bitcoin Core #32545 (1:39:18)
● Bitcoin Core #33892 (1:42:13)
● Core Lightning #8784 (1:44:35)
● LND #9489 (1:45:54)
● BIPs #2051 (1:50:09)
● BOLTs #1299 (1:56:39)
● BOLTs #1305 (1:59:46)

[SF Bitcoin Devs @SFBitcoinDevs]

👇👇👇👇👍👍👍👍👍

[SF Lightning Developers @SFLightningDevs]

Meetup tonight @PresidioBitcoin
Let’s go!!

https://t.co/he8fiRFFbO

[SF Bitcoin Devs @SFBitcoinDevs]

Don’t forget the meetup is tonight 👇👇

[SF Bitcoin Devs @SFBitcoinDevs]

Meetup is this TUESDAY 11/4 this month.
At Stanford

https://t.co/EbVPBtqF40

[SF Bitcoin Devs @SFBitcoinDevs]

Meetup is this TUESDAY 11/4 this month.
At Stanford

https://t.co/EbVPBtqF40

[₿ayareabitcoiners @bayareabtc]

Let’s Gooooo
Holiday Party 12/13
12:00-3:00

https://t.co/n7F4b4vy15

[SF Bitcoin Devs @SFBitcoinDevs]

🎉 🎈 🎊

[₿ayareabitcoiners @bayareabtc]

Let’s Gooooo
Holiday Party 12/13
12:00-3:00

https://t.co/n7F4b4vy15

[SF Bitcoin Devs @SFBitcoinDevs]

@bayareabtc 👀

[SF Bitcoin Devs @SFBitcoinDevs]

Bitdevs meetup Thursday 10/2 @PresidioBitcoin

https://t.co/hCmGQsu8Cf

[SF Bitcoin Devs @SFBitcoinDevs]

Bit devs this Thursday 9/4
@PresidioBitcoin

https://t.co/4qpkU0LIoR

[SF Bitcoin Devs @SFBitcoinDevs]

👇👇👇👇 Thursday

[Presidio Bitcoin @PresidioBitcoin]

See you soon @SFLightningDevs !

[SF Bitcoin Devs @SFBitcoinDevs]

Bitdevs tonight!!!!!
@PresidioBitcoin

https://t.co/AOhHxLktb5

[SF Bitcoin Devs @SFBitcoinDevs]

@bayareabtc @LakeBitcoin @SFLightningDevs @PresidioBitcoin There is a meetup tonight!

https://t.co/AOhHxLktb5

[Austin @_austin_f]

Friends, I’m hosting another Programming Lightning workshop at the stunning @PresidioBitcoin!

During this 1-day workshop, we'll build a Lightning channel from scratch. Along the way, we'll leverage the following educational tools to ensure that participants come away with a deep understanding of topics such as asymmetric commitment transactions, revocation keys, HTLCs, and more:
- Coding exercises
- Socratic method (question-driven learning)
- LOTS of diagrams
- Small-group discussions, where participants teach each other to reinforce concepts collaboratively