Emin Mahrt

@emin

Joined on Aug 24, 2018

  • Date/Time: July 23, 2025, 14:16 EAT Overall Summary Anton and Emin discussed integrating Bitcoin and Bitcoin Lightning with crypto debit cards, focusing on user experience, technical challenges, and business strategy. They emphasized seamless crypto-to-fiat transactions, biometric security, and targeting the German market initially, with plans for scaling globally:hiveTranscript. Key Points Bitcoin and Bitcoin Lightning are both central to the conversation, with Lightning experiencing exponential growth through multiple implementations and new business models like liquidity provision and microtransaction fees:hiveTranscript. The user experience aims to be as simple as traditional banking apps, with biometric authentication and passkeys replacing passwords and PINs:hiveTranscript. Two funding models discussed: pre-funding (user tops up card with crypto converted to fiat) and just-in-time funding (automatic conversion at transaction time), with pre-funding being simpler to implement initially:hiveTranscript. The integration requires handling multi-state transactions on blockchain with escrow and pre-authorization to match traditional card payment flows:hiveTranscript.
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  • Application Structure 1. Entry Points Welcome Screen: First-time users land here with a simple "Login with Passkey" button Main Application: Authenticated users go directly to the tab-based interface 2. Main Navigation (Tab Bar) The application uses a three-tab navigation structure: Bitcoin Tab This is the primary functional area with:
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  • 2025 06 28 - What Emino Built Today for the Nuri Bitcoin Wallet App 💳 Morning Work (9:35 AM - 12:24 PM) Created reusable menu items - Built a template for menu rows that we can use throughout the app (like building LEGO blocks we can reuse) Fixed color issues - Some text colors weren't working properly, so I fixed them Reorganized the Card screen - Made the list of card features look cleaner and more organized Adjusted spacing - Made sure buttons and text are properly aligned (like arranging furniture in a room) Added a toggle for card details - Created an eye icon that opens/closes to show or hide sensitive card information Added QR code to the card - Now when you tap the small card image, it shows a bigger QR code that you can share Started building a notification system - Began work on those little pop-up messages that appear when you copy something (but decided to remove it later)
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  • 2025 06 28 Changelog Emino Code Changelog for June 28, 2025 - Nuri Bitcoin Wallet Branch: ui-ux-font-and-forms Morning Session (9:35 AM - 12:24 PM) 9:35:09 - feat: introduce NuriMenuRow reusable component and refactor SecurityView to use it 9:38:50 - fix: use asset color for default subtitleColor to resolve access control build error 9:45:16 - refactor: CardView uses NuriMenuRow for feature list 9:47:45 - chore: use default grey subtitle color in CardView list 9:53:12 - style: increase NuriCardIllustration horizontal padding to align with list rows
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  • Ansager Ich bin ein Amerikaner. Der Einwanderungs- und Einbürgerungsdienst der Vereinigten Staaten hat in Zusammenarbeit mit der National Broadcasting Company eine Reihe eingebürgerter Staatsbürger eingeladen, über die amerikanische Staatsbürgerschaft zu sprechen, die sie kürzlich erworben haben – einen Besitz, den wir selbst als selbstverständlich betrachten, der aber für sie noch neu und aufregend ist. Heute freuen wir uns, als Gast in dieser Sendung den herausragenden Wissenschaftler Dr. Albert Einstein begrüßen zu dürfen, der heute Morgen, erst vor wenigen Stunden, seine Einbürgerungsprüfung abgelegt hat. Es könnte sicherlich keinen besseren Zeitpunkt für Dr. Einstein geben, mit Herrn Marshall Dimock, dem zweiten stellvertretenden Staatssekretär des Arbeitsministeriums, einige der Gründe für seine Wertschätzung der amerikanischen Staatsbürgerschaft zu besprechen. Marshall Dimock
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  • The goal of Nuri.com is to provide an entry point for the next 1 Billion people joining Bitcoin over the next 5 years. Audience First time Bitcoin users All ages and genders Non technical folks Promise: Be Your Own Bank 100% Bitcoin ownership (unseizable digital cash) Easy purchase of Bitcoin
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  • Introduction and Project Overview This project aims to encode and recover information using sound-based analogue models combined with digital fingerprinting and cryptographic verification. We draw inspiration from analogue gravity (e.g. sonic or acoustic black holes in fluid flow) where sound waves can be trapped like light in a black hole , as well as from AI watermarking techniques that hide robust codes in model outputs . The goal is to simulate a “digital black hole channel” using audio: information (the fingerprint) is embedded into a sound waveform, sent through a lossy or absorbing audio environment analogous to a black hole event horizon , and then partially recovered. By combining error-correcting codes and cryptographic primitives with this analogue approach, we will ensure that even small remnants of the signal can reveal a high-confidence fingerprint and provide verifiable proof of origin or ownership. Key components to integrate: • Analogue Sound-Wave Simulation: Using phononic black hole concepts (trapping and absorbing sound) as a channel model for information loss  . • Digital Fingerprinting & Error Correction: Embedding a robust fingerprint of the data (e.g. a BLAKE3 hash) with redundancy (e.g. RaptorQ fountain codes) so that partial recovery is sufficient  . • Cryptographic Verification: Using Bitcoin/Ethereum-grade cryptography (e.g. secp256k1 ECDSA signatures) to sign the fingerprint, enabling ownership proof and authenticity checks . Below is a structured technical plan broken into tasks. Each task includes technical goals, references to prior research or tools, and illustrative pseudocode or code snippets. The roadmap emphasizes how to combine partial fingerprint recovery with error correction for high-probability detection, how to use audio as a medium to simulate an information “black hole”, and how to integrate the analogue simulation with cryptographic verification.
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  • Hey, I've been working on a secure Bitcoin wallet concept and would love your thoughts. Here's the core idea: Key Security Goals No seed phrases to lose or expose No private key material ever in app memory Hardware-backed security at every level Physical verification required for transactions Nuri.com Prototype Registration, Login, Sign with Fingerprint Card
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  • Date: May 4, 2025 Compiled For: Internal Use / Reproducibility Goal To compile the BryanJacobs/FIDO2Applet open-source code into a .cap file and install it onto an IDEX Java Card using macOS (Apple Silicon), an Omnikey PC/SC reader, and specific Card Manager keys, enabling the card to function as a FIDO2 authenticator. System & Hardware Used Operating System: macOS Sonoma (approx. 15.3.1) on Apple Silicon (M4) Username: eminmahrt Card Reader: HID Global OMNIKEY 5422 Smartcard Reader (PC/SC)
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  • Date: Jan 13th 2025 Emin Mahrt Below is a concise request to our supplier for a biometric smart card that merges: Crypto Hardware Wallet (standard single-sig + optional MPC/threshold). FIDO2/WebAuthn (passkey). EMV Payment capabilities (Visa/Mastercard), prepared from the start but optional for the user. Key Addendum:
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  • Open AI o1 pro After analyzing the pitch deck for NURI, a biometric smart card solution for cryptocurrency and traditional finance, I have identified strengths, gaps, and improvements necessary to make it investment-ready. Below is a structured briefing for enhancing the deck, supported by additional research insights and concrete suggestions. Current Strengths in the Pitch Deck 1. Unique Product Proposition: • Combines biometric security, crypto wallet, Visa card, and FIDO2 passkey authentication in one device. • Highlights advanced security (Multi-Party Computation) and ease of use (no seed phrase). 2. Clear Monetization Plan: • Revenue streams from transactional fees, card sales, cross-border remittances, and in-app exchanges. 3. Market Opportunity:
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  • NPM FUND TL;DR: How the Bonding Curve Smart Contract Funds Open-Source Projects This system solves the funding problem for open-source projects by creating a self-sustaining economic model powered by token bonding curves. Here’s how it works: Continuous Funding Mechanism:Every time someone buys or sells tokens, a percentage of the transaction (e.g., 21%) goes to the project maintainers. This creates a reliable income stream for developers, funded directly by the community. Early Supporters Fund Development: Early adopters buy tokens at lower prices, providing initial capital for the project. As more people join, the token price increases, rewarding early supporters and funding the project further.
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  • To use your FIDO2/Passkey-compatible device (like the CryptoKona card) as part of an MPC (Multi-Party Computation) setup, you need to focus on leveraging the cryptographic capabilities of the FIDO2 protocol while integrating it into a distributed key management system. Here's how you can achieve this: 1. Understanding FIDO2/Passkey Limitations FIDO2/Passkey devices are primarily designed for authentication (e.g., logging into websites or apps) and not for key storage or blockchain transaction signing. However, they do have some cryptographic capabilities that can be repurposed for MPC: FIDO2 Key Pairs:FIDO2 devices generate a public-private key pair for each service (relying party). The private key is stored securely in the device's hardware and cannot be exported. The public key is shared with the service for verification. Signing Capabilities:
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