Good Morning, Bitcoin - Tuesday, May 20th, 2025

News

• Wallet of Satoshi teases a comeback in the US market with a non-custodial product. According to an announcement on X, the widely popular custodial Lightning wallet is preparing to re-enter the United States market with a non-custodial wallet. It is unclear whether the product will be open-source, but the project has clarified that "there will be no KYC on any Wallet of Satoshi, ever!" Wallet of Satoshi ceased serving customers in the United States in November 2023.

• Vulnerability disclosure: Remote crash due to addr message spam in Bitcoin Core versions before v29. Bitcoin Core developer Antoine Poinsot disclosed an integer overflow bug that crashes a node if spammed with addr messages over an extended period. A fix was released on April 14, 2025, in Bitcoin Core v29.0. The issue is rated Low severity.
• Coinbase Know Your Customer (KYC) data leak. The U.S. Department of Justice, including its Criminal Division in Washington, is investigating a cyberattack on Coinbase. The incident involved cybercriminals attempting to extort $20 million from Coinbase to prevent stolen customer data from being leaked online. Although the data breach affected less than 1% of the exchange's users, Coinbase now faces at least six lawsuits following the revelation that some customer support agents were bribed as part of the extortion scheme.
• Fold has launched Bitcoin Gift Cards, enabling users to purchase bitcoin for personal use or as gifts, redeemable via the Fold app. These cards are currently available on Fold’s website and are planned to expand to major retailers nationwide later this year.

"Our mission is to make bitcoin simple and approachable for everyone. The Bitcoin Gift Card brings bitcoin to millions of Americans in a familiar way. Available at the places people already shop, the Bitcoin Gift Card is the best way to gift bitcoin to others," said Will Reeves, Chairman and CEO of Fold.

• Corporate treasuries hold nearly 1.1 million BTC, representing about 5.5% of the total circulating supply (1,082,164 BTC), per BitcoinTreasuries.net data. Recent purchases include Strategy adding 7,390 BTC (total: 576,230 BTC), Metplanet acquiring 1,004 BTC (total: 7,800 BTC), Tether holding over 100,521 BTC, and XXI Capital, led by Jack Mallers, starting with 31,500 BTC.
  • Meanwhile, a group of investors has filed a class action lawsuit against Strategy and its executive Michael Saylor. The lawsuit alleges that Strategy made overly optimistic projections using fair value accounting under new FASB rules while downplaying potential losses.
• The U.S. Senate voted to advance the GENIUS stablecoin bill for further debate before a final vote to pass it. Meanwhile, the House is crafting its own stablecoin legislation to establish a regulatory framework for stablecoins and their issuers in the U.S, reports CoinDesk.
• French 'crypto' entrepreneurs get priority access to emergency police services. French Minister of the Interior, Bruno Retailleau, agreed on measures to enhance security for 'crypto' professionals during a meeting on Friday. This follows a failed kidnapping attempt on Tuesday targeting the family of a cryptocurrency exchange CEO, and two other kidnappings earlier this year.
• Brussels Court declares tracking-based ads illegal in EU. The Brussels Court of Appeal ruled tracking-based online ads illegal in the EU due to an inadequate consent model. Major tech firms like Microsoft, Amazon, Google, and X are affected by the decision, as their consent pop-ups fail to protect privacy in real-time bidding, writes The Record.
• Telegram shares data on 22,777 users in Q1 2025, a significant increase from the 5,826 users' data shared during the same period in 2024. This significant increase follows the arrest of CEO and founder Pavel Durov last year.
• An Australian judge has ruled that Bitcoin is money, potentially exempting it from capital gains tax in the country. If upheld on appeal, this interim decision could lead to taxpayer refunds worth up to $1 billion, per tax lawyer Adrian Cartland.

Use the tools

• Bitcoin Safe v1.3.0 a secure and user-friendly Bitcoin savings wallet for beginners and advanced users, introduces an interactive chart, Child Pays For Parent (CPFP) support, testnet4 compatibility, preconfigured testnet demo wallets, various bug fixes, and other improvements.
• BlueWallet v7.1.8 brings numerous bug fixes, dependency updates, and a new search feature for addresses and transactions.
• Aqua Wallet v0.3.0 is out, offering beta testing for the reloadable Dolphin card (in partnership with Visa) for spending bitcoin and Liquid BTC. It also includes a new Optical Character Recognition (OCR) text scanner to read text addresses like QR codes, colored numbers on addresses for better readability, a reduced minimum for spending and swapping Liquid Bitcoin to 100 sats, plus other fixes and enhancements.

• The latest firmware updates for COLDCARD Mk4 v5.4.3 and Q v1.3.3 are now available, featuring the latest enhancements and bug fixes.
• Nunchuk Android v1.9.68.1 and iOS v1.9.79 introduce support for custom blockchain explorers, wallet archiving, re-ordering wallets on the home screen via long-press, and an anti-fee sniping setting.
• BDK-cli v1.0.0, a CLI wallet library and REPL tool to demo and test the BDK library, now uses bdk_wallet 1.0.0 and integrates Kyoto, utilizing the Kyoto protocol for compact block filters. It sets SQLite as the default database and discontinues support for sled.
• publsp is a new command-line tool designed for Lightning node runners or Lightning Service Providers (LSPs) to advertise liquidity offers over Nostr.

"LSPs advertise liquidity as addressable Kind 39735 events. Clients just pull and evaluate all those structured events, then NIP-17 DM an LSP of their choice to coordinate a liquidity purchase," writes developer smallworlnd.

• Lightning Blinder by Super Testnet is a proof-of-concept privacy tool for the Lightning Network. It enables users to mislead Lightning Service Providers (LSPs) by making it appear as though one wallet is the sender or recipient, masking the original wallet. Explore and try it out here.

• Mempal v1.5.3, a Bitcoin mempool monitoring and notification app for Android, now includes a swipe-down feature to refresh the dashboard, a custom time option for widget auto-update frequency, and a fix for a widget refresh bug when Android battery/data saver mode is enabled.
• Nix-bitcoin v0.0.123 allows replacing the bitcoind package with the latest Bitcoin Knots version from nixpkgs. Set services.bitcoind.package = config.nix-bitcoin.pkgs.bitcoind-knots; in your config to enable this.
• Damus Notedeck v0.4.0 beta introduces the Dave Nostr AI assistant, support for zaps and the Nostr Wallet Connect (NWC) wallet interface, full-text note search, GIFs and fullscreen images, multiple media uploads, user tagging, relay list and mute list support, along with various other improvements.
• Nostur v1.21.0, a Nostr client for Mac, iPhone, and iPad, adds support for follow packs, Blossom servers (uploading and mirroring), post previews for picture-only posts, an audio-only bar, and other enhancements.

• spacestr is a profile editor for Nostr that brings a nostalgic MySpace-style customization experience.
• Validating Lightning Signer v0.14.0-rc.1 is now available for testing.
• LND v0.19.0-beta.rc5 is now available for testing.
• Core Lightning v25.05rc1 is now available for testing.
• Cashu Nutshell v0.17.0, a Chaumian Ecash wallet and mint for Bitcoin Lightning based on the Cashu protocol, introduces Blind Authentication to enhance user privacy by anonymizing authentication within the set of registered users. It also improves multinut payments by making them more reliable through querying multiple routes before failing, along with other enhancements.
• Cashu Dev Kit (CDK) v0.9.2 adds support for HTLCs from hash, optional transport and NUT-10 secret on payment requests, and multi-part payments support in cdk-cli.
• Nostr-PHP v1.8.0 implements NIP-05 lookups, fixes and improves tests for NIP-44 implementation, removes the CLI tool from the library, adds extra metadata fields for profiles, completes the implementation of Relay and RelaySet methods, and introduces support for NIP-17 Private Direct Messages.
• Plebeian.market, a Bitcoin-only peer-to-peer marketplace, is laying the groundwork for a brand-new system with the NIP-99 migration (in progress).
• LNemail.net offers a private disposable email service that can be paid for via the Lightning Network.
• Mullvad has launched a Mullvad VPN loader, a fast and secure application for installing the Mullvad VPN desktop app on Windows and macOS.
• SimpleX Chat v6.3.4 includes a fix for mentions with trailing punctuation, recognizes domain names as links, and features other bug fixes and improvements.
• Tor Browser v14.5.2 is now available with the latest updates and improvements.

Other stuff

• BTC Sessions has produced a brand new tutorial that guides users on how to make the most of the Electrum Bitcoin wallet

• Mempool Research has published an analysis of Bitcoin's UTXO Set, revealing that nearly half of the UTXOs are valued under 1000 satoshis, approximately 30% are related to inscriptions, and over 100,000 Counterparty UTXOs are more than 10 years old.
• BitMEX Research has published a report on the 2015 spam attacks on Bitcoin.
• Bisq has shared a post recapping the results of a survey conducted to better understand the needs and preferences of potential users of the upcoming Bisq Easy mobile app.
• Solo Satoshi has written an article about the upcoming ASIC chip independence revolution in Bitcoin home mining.
• The Bitcoin Manual has published a guide explaining what a Dark Mempool is.
• vnprc has published a detailed explainer on what a Hashpool is and how it works.
• Tails has released the final report on its latest security audit, focusing on critical components of Tails.
• Frank Corva sat down with Amethyst's creator, Vitor Pamplona, to discuss the state of the Nostr protocol in 2025.

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