# diem/diem

Diem’s mission is to build a trusted and innovative financial network that empowers people and businesses around the world.

Repository: https://github.com/diem/diem
Canonical: https://ross.abutalabs.com/products/diem
Homepage: https://diem.com
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: blockchain
Last push: 2026-08-23T17:09:20+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 2710, "days_push": 10, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 16667, forks 2542 (observed 2026-08-28T04:11:16.957188+00:00)

## What it is
Diem Core is a Rust implementation of the Diem blockchain, a decentralized programmable distributed ledger designed for a low-volatility stablecoin payment network. It includes the Move smart contract language and the DiemBFT consensus protocol; the project's assets were sold to Silvergate in 2022 and it is no longer actively developed.

## Use cases
- run a permissioned blockchain validator node
- study BFT consensus protocol implementations
- learn the Move smart contract language
- build a prototype payment network on a distributed ledger
- research stablecoin blockchain architecture

## When to choose
- you need reference code for DiemBFT/HotStuff-style consensus
- you want to study Move's linear-logic resource type system
- you're researching the design of regulated stablecoin networks

## When to avoid
- you want a production blockchain for new projects - assets were sold and development ceased
- you need an actively maintained smart contract platform - consider Aptos or Sui instead
- you expect stable APIs - the code was explicitly a prototype

## Facets
- artifact type: application
- maturity: abandoned
- function: blockchain, programming-language, cryptography
- domain: blockchain, fintech
- platform: rust, windows
- tags: move, bft-consensus, stablecoin, distributed-ledger, smart-contracts, cryptocurrency, linux, macos

## Member repositories
- diem/diem (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:16.957188+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:04:48.919422+00:00, confidence not recorded.
  - readme: https://github.com/diem/diem (fetched 2026-08-28T04:11:16.957188+00:00, sha 39befc18e4ba)
  - homepage: https://diem.com (fetched 2026-08-29T08:02:14.769337+00:00, sha 6c6b92baf7e4)
  - site_page: https://developers.diem.com/docs/welcome-to-diem (fetched 2026-08-29T08:02:14.778573+00:00, sha eee85c192178)
  - site_page: https://developers.diem.com/docs/technical-papers/the-diem-blockchain-paper (fetched 2026-08-29T08:02:14.781877+00:00, sha bc14eeb41f06)
  - site_page: https://developers.diem.com/docs/technical-papers/move-paper (fetched 2026-08-29T08:02:14.783402+00:00, sha 942882f51120)
  - site_page: https://developers.diem.com/docs/technical-papers/state-machine-replication-paper (fetched 2026-08-29T08:02:14.784976+00:00, sha 2ac199fb7ab2)
- Data as of 2026-08-30T08:39:29.467469+00:00.