April 2026 Meetup Topics

[nickfarrow]

Link anything you'd like to discuss. Bitcoin software, tools, research, protocol upgrades (BIPs), mining and more.

[nickfarrow]

Wallet Fingerprinting: Able to guess the originating wallet for about 50% of recent transactions
https://ishaana.com/blog/wallet_fingerprinting/

[5t34k]

Nowhere encodes an entire website into a URL fragment. The site lives in the link itself and is never stored on a server.
The link is the site.
Eight tools (forum, event, fundraiser, store, petition, message, drop, art) publish without accounts or platform permission, simply generate and share the link.
https://hostednowhere.com/

[nickfarrow]

Reverse Engineering a Ledger Nano X Hardware Implant
https://x.com/joegrand/status/2047423001243926778

[M3rkl3-Tr33]

More on Hardware Implants.
https://grandideastudio.com/media/ledger_hardware_implant_slides.pdf

[nickfarrow]

Frostsnap Thaw: Reconstruct extended private keys from FROST backups if the original software is unavailable
https://github.com/frostsnap/frostsnap-thaw/

[nickfarrow]

BIP 322: Generic Signed Message Format
bitcoin/bips#2141
https://bips.xyz/322

[nickfarrow]

Tether Wallet
https://x.com/tetherwallet/status/2044024071705264330

and privacy concerns
https://sparkscan.io/address/spark1pgss8r39wdv3jz34tpuf68pchjvvs6upwghzujdasnht9q9pqm9436h7s5483v?network=mainnet

[nickfarrow]

Iranian Crypto Tolls in the Strait of Hormuz
https://www.trmlabs.com/resources/blog/iranian-crypto-tolls-in-strait-of-hormuz

[nickfarrow]

Tether Supports Freeze of More Than $344 Million in USDT
https://tether.io/news/tether-supports-freeze-of-more-than-344-million-in-usdt-in-coordination-with-ofac-and-u-s-law-enforcement/

[nickfarrow]

Copy Fail: An unprivileged local user can write 4 controlled bytes into the page cache of any readable file on a Linux system, and use that to gain root privileges
https://copy.fail

[craigman-1]

https://bitcoinindustrybody.org.au/

Just want to raise and discuss ABIB. I'm running a workshop next week.to support the interests of the Bitcoin community.

[craigman-1]

Yes this might be a graph including shit coins.

I'm trying to update it with current data to Orange pill people.

Image https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRK1BCyX1HwWLWxFKweP49knGWTtZqrwfVVcDfxiCeceF7aW1E5rXXXGY5q&s=10

Source: https://woobull.com/the-two-types-of-altcoins-an-investors-view/

[CicheR]

Exploit of KelpDAO's cross-chain bridge has cascaded into Aave & others

• https://www.forbes.com/sites/digital-assets/2026/04/18/withdraw-now-inside-aaves-sudden-200m-bad-debt-crisis/