2022-09-22

Author: Liongrass

_posts/2022-09-22-vancouver-socratic-05.md

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+---
+layout: post
+type: socratic
+title: "Vancouver Socratic 005"
+meetup: https://www.meetup.com/vancouver-bitcoiners/events/288449479/
+---
+
+## Announcements
+Please join us for today's Socratic Seminar. A special thank you to our sponsors [Adaptech Group](https://adaptechgroup.com/) and [Bull Bitcoin](https://www.bullbitcoin.com/), for food, refreshments and event space.
+
+### Presentation
+
+Merchant maps, how we discover shop
+
+- Magazines
+- Stickers at the door
+- Targeted promotions
+
+Bitcoin merchant adoption starting around 2012
+
+**How do discover merchants that accept bitcoin?**
+
+- OpenStreetMaps is open source and adaptable through tags
+- [Coinmap](https://coinmap.org/) began displaying this data through an easy to navigate web interface
+- [CoinATMRadar](https://coinatmradar.com/) began building its own proprietary database
+- Point of Sale services may have their own proprietary maps, e.g. [IBEXMercado](https://www.ibexmercado.com/ibex-pay)
+
+**The case for OpenStreetMaps**
+
+- Open
+- Wiki-style editing process (or use a [web form](https://www.btcmap.org/add-location))
+- Adaptable
+- Easy to build on top of or integrate, e.g. local communities or payment processors
+- Data is often mirrored into corporate competitors
+
+Tags commonly used:
+
+```
+currency:XBT=yes
+payment:onchain=no
+payment:lightning=yes
+payment:lightning_contactless=yes
+survey:date=yyyy-mm-dd
+```
+
+
+### Mailing Lists
+
+#### bitcoin-dev
+
+- [Progress on Silent Payments PR](https://bitcoinops.org/en/topics/silent-payments/) Silent payments are a clever way to send BTC to somebody's public key without making this obvious to an observer
+- [Joinstr](https://github.com/1440000bytes/joinstr) a proof of concept for a coinjoin implementation over Nostr
+- [Cashu](https://github.com/callebtc/cashu) easy to run (?) chaumian e-cash implementation that integrates with off- and on-chain payments
+
+#### lightning-dev
+
+- [Offline PoS now flashable from the browser](https://lnbits.github.io/lnpos/installer/) Easy to use web interface to flash your Offline PoS with the latest firmware
+- [Guide to channel jamming attacks](https://jamming-dev.github.io/book/) Great resources to learn about channel jamming and mitigation
+
+<!-- #### dlc-dev -->
+
+
+### Optech
+
+- [160 million hacked from "crypto" market maker Wintermute](https://decrypt.co/110131/algorithmic-market-maker-wintermute-hacked-for-160m)
+
+<!-- ### Bitcoinomics -->
+
+
+
+## Network Data
+
+- [Mempool visualization is 🔥](https://twitter.com/mempool/status/1571846821151793152)
+- [Mempool now showing Lightning channel opens](https://mempool.space/tx/036df36d0acda706e926e4156615dd8e34e444ad2ff433c3aff2e78443a003e2:1)
+
+
+
+<!-- ## Research -->
+
+
+
+<!-- ## InfoSec -->
+
+
+## Pull Requests and repo updates
+
+<!-- ### Bitcoin Core -->
+
+<!-- ### rust-bitcoin -->
+
+<!-- ### secp256k1 -->
+
+<!-- ### secp256k1-zkp -->
+
+<!-- ### BIPs -->
+
+<!-- ### eclair -->
+
+### c-lightning
+
+### lnd
+
+
+<!-- ### rust-lightning -->
+
+
+<!-- ### BOLTS -->
+
+### New Releases
+
+
+
+## Events and Podcasts
+
+<!-- ## Mining -->
+
+## Miscellaneous
+
+
+
+<iframe
+id="btcmap"
+title="BTC Map"
+width="100%" height="480"
+allowfullscreen="true"
+src="https://www.btcmap.org/map?lat=49.326912087086605&long=-122.85976409912111&lat=49.11747845930749&long=-123.3424758911133"
+></iframe>