# Blockchain Commons Library and Tool Implementations Wolf McNally © 2025 Blockchain Commons These lists are not exhaustive, but cover libraries and tools where the differential comparison of implementations is relevant. ## Libraries The names in this list are the GitHub repositories containing the implementations. | Functionality | Swift | Rust | C++ | TypeScript | |-------------------------------|----------------------------|---------------------------|----------------|----------------------------| | Bitcoin<sup>1</sup> | ✅ BCFoundation | | | | | Bytemojis | | ✅ bc-ur-rust | | | | dCBOR | ✅ BCDCBORSwift | ✅ bc-dcbor-rust | | ✅ bc-dcbor-ts<sup>2</sup> | | dCBOR Tagged Data Summarizers | | ✅ bc-components-rust | | | | ED25519 Keys | | ✅ bc-components-rust | | | | Envelope Diffing | ✅ BCEnvelopeSwift | | | | | Envelope Expressions | | ✅ bc-envelope-rust | | | | Envelope Flat Formatting | | ✅ bc-envelope-rust | | | | Envelope Mermaid Output | ✅ BCEnvelopeSwift | | | | | GSTP | | ✅ gstp-rust | | | | LifeHash | ✅ LifeHash<sup>3</sup> | | ✅ bc-lifehash | | | Provenance Mark | ✅ Provenance | ✅ provenance-mark | | | | QR Code Generator | ✅ QRCodeGenerator | | | | | Reference | | ✅ bc-components-rust | | | | SSH Keys | | ✅ bc-components-rust | | | | SSKR | ✅ BCLibsSwift<sup>3</sup> | ✅ bc-sskr-rust | ✅ bc-sskr | | | SSS | ✅ BCLibsSwift<sup>3</sup> | ✅ bc-shamir-rust | ✅ bc-shamir | | | UR | ✅ URKit | ✅ bc-ur-rust<sup>4</sup> | ✅ bc-ur | | | XID (CBOR/UR Type) | | ✅ bc-components-rust | | | | XID Document | | ✅ bc-xid-rust | | | <sup>1</sup> Various bitcoin address and PSBT functionality. <sup>2</sup> Incomplete, proof of concept. <sup>3</sup> Swift implementation uses C++. <sup>4</sup> Rust implementation is wrapper around third-party Rust implementation. ## Command Line Tools The names in this list are the names of the executables. | | Swift | Rust | C++ | Python | |---------------|:-------------:|:----:|:---:|:-------------:| | bytewords | | | ✅ | | | dcbor | | ✅ | | | | envelope | ⚠️<sup>1</sup> | ✅ | | | | keytool | | | ✅ | | | lifehash | ⚠️<sup>2</sup> | | ✅ | | | seedtool | | ✅ | | | | ssh_envelope | | | | ⚠️<sup>3</sup> | **Notes:** <sup>1</sup> Deprecated in favor of Rust implementation. <sup>2</sup> Deprecated in favor of C++ implementation. <sup>3</sup> Functionality is available in the Rust `envelope` tool.