# 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 |
|-------------------------------|----------------------------|---------------------------|----------------|----------------------------|
| Bitcoin¹ | ✅ BCFoundation | | | |
| Bytemojis | | ✅ bc-ur-rust | | |
| dCBOR | ✅ BCDCBORSwift | ✅ bc-dcbor-rust | | ✅ bc-dcbor-ts² |
| 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 | ✅ LifeHash³ | | ✅ bc-lifehash | |
| Provenance Mark | ✅ Provenance | ✅ provenance-mark | | |
| QR Code Generator | ✅ QRCodeGenerator | | | |
| Reference | | ✅ bc-components-rust | | |
| SSH Keys | | ✅ bc-components-rust | | |
| SSKR | ✅ BCLibsSwift³ | ✅ bc-sskr-rust | ✅ bc-sskr | |
| SSS | ✅ BCLibsSwift³ | ✅ bc-shamir-rust | ✅ bc-shamir | |
| UR | ✅ URKit | ✅ bc-ur-rust⁴ | ✅ bc-ur | |
| XID (CBOR/UR Type) | | ✅ bc-components-rust | | |
| XID Document | | ✅ bc-xid-rust | | |

¹ Various bitcoin address and PSBT functionality.
² Incomplete, proof of concept.
³ Swift implementation uses C++.
⁴ 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 | ⚠️¹ | ✅ | | |
| keytool | | | ✅ | |
| lifehash | ⚠️² | | ✅ | |
| seedtool | | ✅ | | |
| ssh_envelope | | | | ⚠️³ |

**Notes:**

¹ Deprecated in favor of Rust implementation.
² Deprecated in favor of C++ implementation.
³ Functionality is available in the Rust `envelope` tool.