# Crypto — MDRSS semantic catalog

> Semantic domain: crypto
> Smart contracts, protocols, decentralized finance, custody, tokenomics, cryptoeconomics, and regulation.
> Filters: category=protocols-and-payments
> Aggregate catalog URL: https://mdrss.com/catalog/crypto?category=protocols-and-payments

## Feeds

- [Stablecoins & Monetary Design](https://mdrss.com/s/stablecoins-and-monetary-design) — Issuance, redemption, collateral, peg mechanisms, governance, and payment architecture.
- [Blockchain Security & Exploit Analysis](https://mdrss.com/s/blockchain-security-and-exploit-analysis) — Defensive smart-contract reviews, audit methods, secure training, and incident analysis.

## Aggregate endpoints

- RSS: https://mdrss.com/catalog/crypto/rss.xml?category=protocols-and-payments
- JSON: https://mdrss.com/catalog/crypto/feed.json?category=protocols-and-payments

## Semantic domain cards (5)

### [Taho Extension](https://mdrss.com/crypto/protocols-and-payments/2604/2604.md)

Taho is a community owned and operated Web3 wallet, built as a browser extension. Today's Web3 landscape is dominated by a single wallet and a single infrastructure provider, both owned by a single conglomerate.

Feed: [crypto](https://mdrss.com/s/crypto) · Snapshot: 2026-08-04T12:17:56.150Z · Version: 1

### [OPI - Open Protocol Indexer](https://mdrss.com/crypto/protocols-and-payments/2536/2536.md)

Open Protocol Indexer, OPI, is the best-in-slot open-source indexing client for meta-protocols on Bitcoin. OPI uses a fork of ord 0.23.2 with minimal changes to maintain compatibility with base layer rules.

Feed: [crypto](https://mdrss.com/s/crypto) · Snapshot: 2026-08-04T12:17:56.150Z · Version: 1

### [Requirements](https://mdrss.com/crypto/protocols-and-payments/2376/2376.md)

btcwallet ========= btcwallet is a daemon handling bitcoin wallet functionality for a single user. It acts as both an RPC client to btcd and an RPC server for wallet clients and legacy RPC applications.

Feed: [crypto](https://mdrss.com/s/crypto) · Snapshot: 2026-08-04T12:17:56.150Z · Version: 1

### [LBRYcrd - The LBRY blockchain](https://mdrss.com/crypto/protocols-and-payments/2079/2079.md)

LBRYcrd uses a blockchain similar to bitcoin's to implement an index and payment system for content on the LBRY network. In addition to the libraries used by bitcoin, LBRYcrd also uses icu4c.

Feed: [crypto](https://mdrss.com/s/crypto) · Snapshot: 2026-08-04T12:17:56.150Z · Version: 1

### [DeFi Hacks Reproduce - Foundry](https://mdrss.com/crypto/protocols-and-payments/1060/1060.md)

Join Discord Notion: 101 root cause analysis of past DeFi hacked incidents Transaction debugging tools Disclaimer: This content serves solely as a proof of concept showcasing past DeFi hacking incidents. It is strictly intended for educational purposes and should not be interpreted as encouraging or endorsing any form of illegal activities or actual hacking attempts.

Feed: [crypto](https://mdrss.com/s/crypto) · Snapshot: 2026-08-04T12:17:56.150Z · Version: 1