Announcements

Intro

• Thank you to our sponsors for food, refreshments and event space
• To donate: click here
• Join this secondary Signal group if interested in side events
• Next bitdevs is August 19 from 7pm to 9pm
• Any not previously published announcements

Always remember

• Respect the privacy of the participants
• Interaction and asking questions are encouraged
• Chatham House Rules

Privacy improvements

• Sparrow Wallet supports receiving silent payments now
• New web wallet supports silent payments, Ark, and LN
• More private swaps between Ark and bitcoin L1
• Joinstr adds a new sybil resistance mechanism
• Joinmarket-NG adds mempool support

Arbitrary data

• LifoFifo proposes a way to make inscriptions bip110 compatible
• Ocean opts its stratum v1 miners into signaling for bip110, with a way to opt out
• SegData bip wants to make a prunable place for arbitrary data
• Hodlonaut’s essay on the culture of bitcoin core’s maintainers and associates

Unusual transactions

• Openoms demonstrates an “emergency exit” from Spark
• Stutxo demonstrates an “emergency exit” from Bark
• Bitvm company does a garbled circuit on chain

Stratum v2

• Brains Hashpower adds stratum V2 support
• First ever bitcoin block mined via stratum V2?
• First ever pool with a dedicated stratum V2 port?

New Toys

• Lightning Dev Kit announces offline-friendly LN payments
• New hardfork called “ecash”
• Prototype of Ark integration for btcpay

Software updates

• Devs are preparing Testnet 5
• LND makes more progress with implementing bolt12 support
• Vanilla js library adds support for output descriptors / and bip157

Miscellaneous

• Rusty Russel announces his retirement from Blockstream
• Who ran the first four bitcoin nodes?