Perth BitDevs
Zeus Wallet Upgrade
Zeus wallet v0.11.1 released with new features and improvements.
Perth Bloke Launches NostrMQ
NostrMQ is a new messaging queue protocol built on Nostr. Example use case: Mongo By Relays - no hosting, no API layer, ephemeral keys for encrypted responses.
The Filter Wars Continue
Aeon BTC decides to ban their node from connecting to Knots nodes and publishes a "Know Knots node list" so others can do the same. Gmax sees issues with the ban list potentially creating network splits and suggests the list only be used for outbound peers.
Node Fingerprint Attack
Daniela Brozzoni posted to Delving Bitcoin about research into identifying the same node on multiple networks using addr messages. Nodes send addr messages to advertise other potential nodes, but the researchers were able to fingerprint individual nodes using details from their specific address messages, allowing them to identify the same node running on multiple networks (such as IPv4 and Tor). Suggested mitigations include removing timestamps from address messages or randomizing them slightly.
Time to Talk About Forking: CTV & CSFS
70 developers signed a letter supporting CTV (OP_CHECKTEMPLATEVERIFY, BIP-119) and CSFS (OP_CHECKSIGFROMSTACK, BIP-348). O’Beirne posted the letter to the mailing list. Antoine Poinsot and Greg Sanders started their own CTV discussion thread. Open question: OP_NOP4 and legacy script, or OP_SUCCESS and Tapscript only?
BitVM3 and Garbled Circuits
New BitVM3 proposal using garbled circuits for off-chain computation verification on Bitcoin.
Descriptor Encrypt
Josh Doman announced a Rust library that deterministically encrypts wallet descriptors so they can only be decrypted by the set of keys that can spend the funds. This enables secure public backups where sensitive wallet information needs to remain hidden from unauthorized parties.
Bitcoin Treasury Update
Bitcoin entities have increased holdings by 18% in 2025. Major moves include Strategy’s $84B capital raise plan, Trump Media planning to raise $2.5B, Green Minerals (Norway) purchasing $1.2B, GameStop’s $513M Bitcoin purchase, Metaplanet’s goal of holding 210,000 BTC by 2027, Twenty One Capital launching with over 42,000 BTC, and many more corporate treasury strategies.
Ashigaru Whirlpool Released
The Ashigaru Open Source Project has released Ashigaru Whirlpool, a version of Samourai Wallet’s Whirlpool, allowing users to coinjoin again. Alongside the coordinator code, the project has launched a desktop client terminal application (available on Linux, macOS, and Windows), forked from Sparrow Terminal.
Frostsnap Released
The first hardware wallet that is not a trusted third party. Frostsnap devices are not trusted to generate keys on their own - they involve your phone or laptop in sensitive operations to disrupt any possibility of device attacks. Built on FROST (Flexible Round-Optimised Schnorr Threshold), which enables true t-of-n thresholds. Unlike MuSig/MuSig2 where all participants must be online, FROST allows any subset of t participants to sign. Distributed Key Generation ensures every participant contributes equally without a trusted dealer.
Frostsnap Additional Context
Additional diagrams and reference material for the Frostsnap discussion.
Wallets Using Spark
Spark is an off-chain scaling solution built on top of Statechains. Wallet of Satoshi’s new "non-custodial" version is built on Spark. Blitz Wallet integrates Bitcoin Lightning Network, Liquid sidechain, and eCash to balance trade-offs and make self-custodial payments easier. The new Breez SDK is also built on Spark’s L2. Blitz introduces a "custodial ladder" to help users transition to full self-custody at their own pace.