{"adoption": {"forks": 614, "observed_at": "2026-08-28T04:08:16.106432+00:00", "stars": 3746}, "canonical_url": "https://ross.abutalabs.com/products/cardano-sl", "card": {"archived": true, "artifact_type": "application", "description": "Cryptographic currency implementing Ouroboros PoS protocol", "domain": ["blockchain", "microservices"], "enriched": true, "function": ["cryptography", "networking", "cli"], "health_score": 10, "homepage": null, "language": "Haskell", "license": "Apache-2.0", "license_family": "permissive", "maturity": "abandoned", "member_repos": ["input-output-hk/cardano-sl"], "name": "input-output-hk/cardano-sl", "platform": ["windows", "cross-platform"], "pushed_at": "2020-07-30T15:22:04+00:00", "repo": "input-output-hk/cardano-sl", "stars": 3746, "tags": ["cardano", "ouroboros", "proof-of-stake", "blockchain-node", "deprecated", "haskell", "cryptocurrency", "linux", "macos"], "topics": ["haskell", "stake-blockchain-protocol", "cryptocurrency"], "urls": [], "use_cases": ["run a Cardano proof-of-stake blockchain node", "study the Ouroboros consensus protocol implementation", "explore legacy Cardano SL source code", "research proof-of-stake cryptocurrency design in Haskell"], "what_it_is": "Cardano SL is the original Haskell implementation of the Cardano cryptocurrency, implementing the Ouroboros proof-of-stake consensus protocol. The codebase is deprecated and superseded by the modular Shelley-era components such as cardano-node and cardano-wallet.", "when_to_avoid": ["you want to run or build on Cardano today - use cardano-node and related components instead", "you need an actively maintained blockchain node", "you want Shelley-era features or current wallet support"], "when_to_choose": ["you need to read or audit the original Ouroboros PoS implementation", "you are researching the history of Cardano's codebase"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/cardano-sl", "repo": "input-output-hk/cardano-sl", "role": "main", "score": 10}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:08:16.106432+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:29:02.973556+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b12870750c4128f0fb92503715776b578b1d11dc1b755f1e0c4bb01783f54800", "fetched_at": "2026-08-28T04:08:16.106432+00:00", "kind": "readme", "missing": false, "url": "https://github.com/input-output-hk/cardano-sl"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["archived"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3610, "days_push": 2225, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 10, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}