Public record
Software health reportschema 0.14.0 · metrics 2.10.0 · 2026-07-18 22:15 UTC

MetacoSA / NBitcoin

Comprehensive Bitcoin library for the .NET framework.

C#MIT★ 1,942 stars⑂ 869 forkssince Apr 2014View on GitHub ↗
KindLibraryhow this is determined

MetacoSA/NBitcoin holds a health index of 73 out of 100, placing it in the Good band. It scores highest on Vitality (75/100) and lowest on AI Readiness (24/100). It was last updated 16 days ago. A single contributor accounts for most of its recent work.

73
overall / 100
Good

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

73
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 64 is calibrated to 73 on the published index scale (record calibration 2026-08-02).

Ownership

METACOOrganization
38 followers3 public repossince Jul 2015

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
NuGetNBitcoin.Altcoins6.0.3-15998 days agobitcoinaltcoinsbcashbgoldbitcoredashvergeterracoindogecoindystemfeathercoingroestlcoinlitecoinmonacoinpolisufoqtumviacoinzclassicliquidargoneummonetaryunitlbrycreditsxdsalthashneblioopticalbitcoin
NuGetNBitcoin.TestFramework5.0.2-13586 days agobitcoinaltcoinsbcashbgoldbitcoredashdogecoindystemfeathercoingroestlcoinlitecoinmonacoinpolisufoviacoinzclassicliquidargoneum

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

75Good · 21% of overall

Development activity

67Good
How it's scored
28.8/36Push recency — last push 16 days ago
11.8/36Commit cadence — 17/52 weeks with commits
16.5/18Commit volume — 68 commits in the last year
10/10OpenSSF Scorecard: Maintained — 27 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year68
human_commit_share—
days_since_last_push16
active_weeks_last_year17

Release discipline

88Excellent
How it's scored
16.2/27Ships releases — 45 version tags (no GitHub releases)
36/36Release recency — latest release 32 days ago
27/27Release cadence — a release every ~21.6 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count45
latest_release_tagv10.0.7
releases_from_tagsyes
days_since_latest_release32
mean_days_between_releases21.6
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

74Good · 17% of overall

Popularity & adoption

90Excellent
How it's scored
53.3/60Stars — 1,942 stars
24.5/25Forks — 869 forks
12.3/15Watchers — 164 watchers
Inputs used
forks869
stars1,942
watchers164
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

50Moderate
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges—
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_services—
has_pull_request_templateno

Ecosystem adoption (downloads)

82Excellent
How it's scored
65.3/80Total downloads — 1,943,645 downloads all-time across nuget
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesNBitcoin.Altcoins, NBitcoin.TestFramework
dependents—
ecosystemsnuget
total_downloads1,943,645
monthly_downloads—
unverified_packages_excluded—
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

68Good · 23% of overall

Maintainer resilience (bus factor)

36Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
3.9/22.5Commit distribution — top contributor authored 83% of commits
13.5/13.5Contributor breadth — 100 contributors
10/10OpenSSF Scorecard: Contributors — project has 18 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled100
top_contributor_share0.827

Issue & PR responsiveness

76Good
How it's scored
34.8/42Issue resolution — 83% of issues closed
23.5/30PR acceptance — 576/736 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
7.5/15OpenSSF Scorecard: Code-Review — Found 16/30 approved changesets -- score normalized to 5
Inputs used
merged_prs576
open_issues95
closed_issues460
prs_merged_7d—
prs_decided_7d—
prs_merged_30d—
prs_decided_30d—
issue_closed_ratio0.829
closed_unmerged_prs160
first_time_authors_30d—
first_time_prs_merged_30d—
first_time_prs_decided_30d—
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

72Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain — verified-domain status not read for this organization
11.4/25Owner reach — 38 followers of MetacoSA
16.4/25Track record — 3 public repos, account ~11 yr old
Inputs used
followers38
owner_typeOrganization
is_verified—
owner_loginMetacoSA
public_repos3
account_age_days4,015
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 2 package(s) on nuget
35/35Publish recency — latest publish 86 days ago
20/20Version history — 159 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesNBitcoin.Altcoins, NBitcoin.TestFramework
ecosystemsnuget
any_deprecatedno
min_days_since_publish86

Engineering Quality

Are baseline engineering and documentation practices in place?

58Moderate · 19% of overall

Engineering practices

46Weak
How it's scored
24/24CI workflows — 2 workflow(s)
0/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
16/20OpenSSF Scorecard: CI-Tests — 15 out of 17 merged PRs checked by a CI test -- score normalized to 8
Inputs used
has_ciyes
has_testsno
has_editorconfigyes
has_linter_configno
has_precommit_configno

Documentation

75Good
How it's scored
30/30README
25/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
0/10Topics
10/10Wiki
Inputs used
topics—
has_wikiyes
homepage—
docs_site—
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

52Moderate · 16% of overall

Security posture

52Moderate
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — branch protection not enabled on development/release branches
2/2.5CI-Tests — 15 out of 17 merged PRs checked by a CI test -- score normalized to 8
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
3.8/7.5Code-Review — Found 16/30 approved changesets -- score normalized to 5
2.5/2.5Contributors — project has 18 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
0/7.5Dependency-Update-Tool — no update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 27 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
4.5/5SAST — SAST tool detected but not run on all commits
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate5.2
Excluded from scoring (no data or not applicable): Packaging, Signed-Releases. Remaining weights renormalized.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

24At Risk · 4% of overall

Agent context & guidance

1Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
0/40Legible commit history — no data
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share—
agent_instruction_files—
agent_instruction_max_bytes—
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

Verify loop (build / test / typecheck)

13Critical
How it's scored
0/18One-command bootstrap
0/22Automated tests
0/11Lint / format config
11/11Static type checking — C# (statically typed)
0/10Reproducible environment
0/10Demonstrated agent practice — no data
0/8Automated maintenance — no data
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsno
lockfiles—
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share—
toolchain_manifests—
dependency_bot_commit_share—
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.

Code legibility for models

98Exceptional
How it's scored
45/45Type-checkable code — C# (statically typed)
52.9/55Manageable file sizes — 26/673 source files over 60KB
Inputs used
primary_languageC#
largest_source_bytes615,296
source_files_sampled673
oversized_source_files26

Key facts

1,942GitHub stars
100contributors
68commits, last 12 months
16days since last push
45releases
1bus factor
95open issues
NuGetpackage ecosystems

More detail

OpenSSF Scorecard 5.2 / 10
5.2aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-07-18 22:15 UTC

10Binary-Artifactsno binaries found in the repo
0Branch-Protectionbranch protection not enabled on development/release branches
8CI-Tests15 out of 17 merged PRs checked by a CI test -- score normalized to 8
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
5Code-ReviewFound 16/30 approved changesets -- score normalized to 5
10Contributorsproject has 18 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained27 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
9SASTSAST tool detected but not run on all commits
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 15
RegistryPackageVersion constraintManifest
NuGetMicrosoft.SourceLink.GitHub1.0.0NBitcoin.Altcoins/NBitcoin.Altcoins.csproj
NuGetBenchmarkDotNet0.14.0NBitcoin.Bench/NBitcoin.Bench.csproj
NuGetBenchmarkDotNet.Diagnostics.Windows0.14.0NBitcoin.Bench/NBitcoin.Bench.csproj
NuGetMicrosoft.SourceLink.GitHub1.0.0NBitcoin.Secp256k1/NBitcoin.Secp256k1.csproj
NuGetSystem.Runtime.InteropServices.RuntimeInformation4.3.0NBitcoin.TestFramework/NBitcoin.TestFramework.csproj
NuGetMicrosoft.SourceLink.GitHub1.0.0NBitcoin.TestFramework/NBitcoin.TestFramework.csproj
NuGetcoverlet.collector3.2.0NBitcoin.Tests/NBitcoin.Tests.csproj
NuGetMicrosoft.NET.Test.Sdk17.12.0NBitcoin.Tests/NBitcoin.Tests.csproj
NuGetMicrosoft.CSharp4.7.0NBitcoin.Tests/NBitcoin.Tests.csproj
NuGetxunit2.9.2NBitcoin.Tests/NBitcoin.Tests.csproj
NuGetxunit.runner.visualstudio2.4.1NBitcoin.Tests/NBitcoin.Tests.csproj
NuGetNewtonsoft.Json13.0.1NBitcoin/NBitcoin.csproj
NuGetSystem.Buffers4.5.0NBitcoin/NBitcoin.csproj
NuGetMicrosoft.Extensions.Logging.Abstractions1.0.0NBitcoin/NBitcoin.csproj
NuGetMicrosoft.SourceLink.GitHub1.1.1NBitcoin/NBitcoin.csproj
All dependencies 13

Full resolved dependency set from the GitHub dependency graph: 13 direct and 0 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
NuGetBenchmarkDotNet0.14.0direct
NuGetBenchmarkDotNet.Diagnostics.Windows0.14.0direct
NuGetcoverlet.collector3.2.0direct
NuGetMicrosoft.CSharp4.7.0direct
NuGetMicrosoft.Extensions.Logging.Abstractions1.0.0direct
NuGetMicrosoft.NET.Test.Sdk17.12.0direct
NuGetMicrosoft.SourceLink.GitHub1.0.0direct
NuGetMicrosoft.SourceLink.GitHub1.1.1direct
NuGetNewtonsoft.Json13.0.1direct
NuGetSystem.Buffers4.5.0direct
NuGetSystem.Runtime.InteropServices.RuntimeInformation4.3.0direct
NuGetxunit2.9.2direct
NuGetxunit.runner.visualstudio2.4.1direct
Raw JSON report machine-readable

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Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.14.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — NuGet.