The Human Rights Foundation (HRF) has unveiled a set of bounty challenges worth 20 BTC. This initiative is geared towards supporting open-source Bitcoin developers who are creating tools and services to enhance Bitcoin's capabilities. 

These specific challenge areas, inspired by the HRF's global work with activists and its research, were meticulously selected to promote usability and augment privacy capabilities in Bitcoin, the Lightning Network, ecash, and Nostr.

The challenges are available until the end of 2024, with any unclaimed rewards being redirected into the HRF's Bitcoin Development Fund. 

The bounties focus heavily on privacy, resistance to censorship, and self-sovereignty, drawing significant attention to some of the more pressing issues that Bitcoin faces in today's world.

Bounty 1

The first bounty, worth 2 BTC, aims to port the Bitcoin UI Kit from its existing Figma file format to the open-source Penpot project, making this comprehensive set of design components more accessible and promoting free, self-hosted usage for Bitcoin project development.

Bounty 2

The second bounty, offering 2 BTC, seeks a serverless solution for a version 2 payjoin protocol that enables transactions without a public server, utilizing BIP-21 unified Bitcoin URIs, and avoiding reliance on third parties that might compromise user privacy.

Bounty 3

The third bounty, valued at 2 BTC, seeks the development of a Nostr client implementation for end-to-end encrypted group chats, designed to prevent metadata leakage to possible malicious third parties and safeguard message content, user identity, and frequency of communication.

Bounty 4

The fourth bounty, also worth 2 BTC, is for creating a multi-platform, open-source mobile Bitcoin wallet that can process Silent Payments without needing a client-side full node, and is compatible with other mobile wallets, and must be in compliance with the Silent Payments BIP authored by Josie Bake.

Bounty 5

The fifth 2 BTC bounty is for integrating a bolt 12 offer generator into a mobile wallet, allowing offers to be communicated directly from a phone screen to a user without needing to copy, paste, or scan a QR code, much like displaying a Bitcoin or Lightning address.

Bounty 6

The sixth bounty, valued at 2 BTC, is aimed at developing a self-custodial Lightning address generator within a mobile wallet, accessible solely via a smartphone, without the user needing to set up their own web server.

Bounty 7

The seventh bounty, offering 2 BTC, requires a mobile integration of border wallet functionality into an existing Bitcoin wallet, facilitating users to generate and practice recalling their seed phrase, especially during cross-jurisdictional travel.

Bounty 8

The eighth bounty, worth 2 BTC, seeks to introduce easy 2-of-3 multi-signature functionality within a mobile wallet, maintaining self-custody and providing an open-source method for fund recovery beyond the multi-signature application itself.

Bounty 9

The ninth bounty, a 2 BTC reward, calls for a self-custodial wallet implementation using FROST (flexible round-optimal Schnorr threshold signatures), which would facilitate modification of the signer set without transferring funds to a different address.

Bounty 10

The tenth and final 2 BTC bounty is divided into four 0.5 BTC parts. The tasks include creating iOS and Android Cashu apps with fully functional, open-source wallets supporting multiple mints and seed phrase backups for fund recovery, and allowing ecash transfers via Nostr. It also involves creating a Cashu web widget for anonymous payments for paywalled content and actualizing Cashu-TS backup restore to enable users to restore balances across various Cashu implementations, enhancing user security with a seed phrase backup scheme.

The HRF announced this as the first batch of 10 Bitcoin challenges, with the possibility of adding more over time. 

The 2 BTC bounty will be awarded to the team or individual developer who successfully solves any of the challenges, with the best submission selected by external industry experts. 

For more details or inquiries about participation, individuals or parties may visit or contact

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