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Bitcoin

A collection of 30 posts

Bitauth IDE v1.0.0 Released

Bitauth IDE v1.0.0 Released

The first long-term stable (LTS) release of Bitauth IDE, v1.0.0, is now available. This upgrade significantly improves performance, enables offline usage, and clears the way for future development.

Libauth v2.0.0 Released

Libauth v2.0.0 Released

Libauth v2.0.0 is now available, and the library has reached over 1 million annual downloads, with consistent growth in daily downloads.

Bitcoin Cash Upgrade 2024

Bitcoin Cash Upgrade 2024

Libauth, Chaingraph, and Bitauth IDE support one Cash Improvement Proposal (CHIP) for the 2024 Bitcoin Cash Upgrade.

Bitcoin Cash Podcast #79: CashTokens Creation

Bitcoin Cash Podcast #79: CashTokens Creation

I joined the Bitcoin Cash Podcast to talk about the history behind CashTokens, Bitcoin Cash technical infrastructure, and directions for future development.

CHIP: ZCEs – Instant, Secure Payments on Bitcoin Cash

CHIP: ZCEs – Instant, Secure Payments on Bitcoin Cash

Zero-Confirmation Escrows (ZCEs) enable instant, incentive-secure payments on Bitcoin Cash. They require no setup delay or ongoing relationship, and can be safely accepted without a waiting period.

AMA on r/btc: Build Decentralized Apps on Bitcoin Cash with PMv3

AMA on r/btc: Build Decentralized Apps on Bitcoin Cash with PMv3

I was r/btc on Reddit on May 2, 2021 for an AMA (Ask Me Anything). Some topics covered included prediction markets, PMv3, CashTokens, and Bitcoin Cash development.

Video: Prediction Markets on Bitcoin Cash

Video: Prediction Markets on Bitcoin Cash

I spoke with George Donnelly about hashed witnesses, PMv3, CashTokens, prediction markets, synthetic assets, decentralized exchanges, BCH scaling considerations, comparisons with ETH, and more.

PMv3: Build Decentralized Applications on Bitcoin Cash

PMv3: Build Decentralized Applications on Bitcoin Cash

Bitcoin Cash is already powerful enough to build and scale many applications planned for “global state” systems like Ethereum.

PMv3-Based CashTokens

PMv3-Based CashTokens

A post describing the original 2020 implementation of contract-validated tokens for Bitcoin Cash. Superseded by the CashTokens CHIP.

Prediction Markets on Bitcoin Cash

Prediction Markets on Bitcoin Cash

By cutting through misinformation, prediction markets can save lives, root out corruption, and revolutionize industries.

RFC: AllowReplay–Safer Splits for Bitcoin Cash

RFC: AllowReplay–Safer Splits for Bitcoin Cash

AllowReplay allows users to opt-in to replay protection on a per-signature basis, and it’s strictly beneficial to the implementing network.

Bitauth IDE Now Supports Active Code Path Highlighting

Bitauth IDE Now Supports Active Code Path Highlighting

Bitauth IDE now fades out code paths which are not evaluated by the active script, improving the readability of complex evaluations.

Time Travel in Bitauth IDE with Scenarios

Time Travel in Bitauth IDE with Scenarios

Testing Bitcoin and Bitcoin Cash authentication templates in Bitauth IDE is now easier with support for custom scenarios.

Libauth Has a New Logo

Libauth is an ultra-lightweight JavaScript library for Bitcoin, Bitcoin Cash, and Bitauth applications. Portable, zero dependencies.

Bitcoin-ts is now Libauth

Bitcoin-ts is now Libauth

Libauth is an ultra-lightweight JavaScript library for Bitcoin, Bitcoin Cash, and Bitauth applications. Portable + zero dependencies.

Deriving & Cracking BIP32 HD Keys in JavaScript

Deriving & Cracking BIP32 HD Keys in JavaScript

The new bitcoin-ts supports BIP32 Hierarchical Deterministic (HD) key derivation, including a method for reversing non-hardened derivation.

How to Write Custom Bitcoin Scripts in Bitauth IDE

How to Write Custom Bitcoin Scripts in Bitauth IDE

Bitauth IDE is an integrated development environment for bitcoin authentication. This guide explains features of the IDE and language.

New Examples Added to Bitcoin Script Debugger

New Examples Added to Bitcoin Script Debugger

BitAuth IDE now includes examples of 3 types of authentication schemes available for securing bitcoin: single signature (P2PKH), a 2-of-3…

Evaluate and Debug Bitcoin Cash Scripts in JavaScript

Evaluate and Debug Bitcoin Cash Scripts in JavaScript

A full TypeScript implementation of the BCH virtual machine is now available in bitcoin-ts, including both standard evaluation and a…

Schnorr Signature Support for JavasScript using WebAssembly

Schnorr Signature Support for JavasScript using WebAssembly

The latest version of bitcoin-ts [https://github.com/bitauth/bitcoin-ts] now includes support for signing and verifying Schnorr signatures over the secp256k1 curve. Schnorr functionality has been added to the library’s Secp256k1 [https://bitauth.github.io/bitcoin-ts/interfaces/secp256k1.html] WebAssembly interface [https://bitauth.github.io/bitcoin-ts/interfaces/secp256k1.

BitAuth IDE: Write and Debug Custom Bitcoin Scripts

BitAuth IDE: Write and Debug Custom Bitcoin Scripts

Bitauth IDE is a new open source project for designing advanced authentication schemes for bitcoin and bitcoin-like cryptocurrencies.

Scaling Blockchains: Panel at TABConf 2019

Scaling Blockchains: Panel at TABConf 2019

I took part in a panel on Scaling Blockchains with Paul Sztorc, Theo Goodman, and Allen Piscitello at TABConf 2019.

Just released: SHA-256, SHA-512, SHA-1, and RIPEMD-160 using WebAssembly

Just released: SHA-256, SHA-512, SHA-1, and RIPEMD-160 using WebAssembly

TL;DR: up to 20x better performance than JavaScript, and up to 4x faster than Node.js native bindings for small inputs. (But you should look at the benchmarks yourself.) You can now import WebAssembly implementations of the cryptographic hash functions used in cryptocurrencies like Bitcoin and Bitcoin Cash from

Just released: WebAssembly version of Secp256k1 (10x faster than Javascript)

Just released: WebAssembly version of Secp256k1 (10x faster than Javascript)

Bitcoin, Bitcoin Cash, and most other cryptocurrencies use the Elliptic Curve Digital Signature Algorithm (ECDSA) [https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm] to authenticate transactions. ECDSA can be used with a number of different elliptic curves [https://en.wikipedia.org/wiki/Elliptic-curve_cryptography], and Bitcoin’s creator

Defensive Consensus: a Concrete Example

Defensive Consensus: a Concrete Example

Imagine three different implementations of “Simple Bitcoin” exist: Europa, Ganymede, and Callisto.